How can I pipe to a bash alias from an npm script? - json

I have an alias in my .bashrc for bunyan:
$ alias bsh
alias bsh='bunyan -o short'
This line runs fine in bash:
$ coffee src/index.coffee | bsh
But if I put the same thing in 'scripts'
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"coffee":"coffee src/index.coffee | bsh"
},
And npm run coffee, it fails:
> coffee src/index.coffee | bsh
sh: bsh: command not found
events.js:141
throw er; // Unhandled 'error' event
^
Error: write EPIPE
at exports._errnoException (util.js:870:11)
at WriteWrap.afterWrite (net.js:769:14)
So at random I tried putting in || instead of | and it worked. I can't figure out why though. I don't have to escape pipe characters in JSON as far as I know.
However it doesn't actually pipe the output to the bsh alias.
The actual fix is to use "coffee":"coffee src/index.coffee | bunyan -o short" -- get rid of the alias completely.
How can I use a bash alias in an npm script?

You can create a function instead of an alias.
function bsh() {
bunyan -o short
}
export -f bsh
The export will make it available to children processes.

So I had a whole response typed up about using
. ~/.bash_aliases && coffee src/index.coffee | bsh
But it turns out that aliases are barely, if at all, supported in bash scripts. From what I have read, aliases are deprecated in favor of functions...
See this discussion for what convinced me to use functions instead of aliases. I tried for an hour or two to get aliases to work by testing with /bin/bash -c as well as npm run, with no luck. However, using a function as suggested by Diego worked immediately and without problems.
I am including this even though the question is already marked as answered in case someone as stubborn as me winds up here from google and decides to try to make aliases work instead of just using a function.
However, I did run into a problem specifically when trying to use this with npm scripts. Even with the export -f, my functions aren't recognized - I still had to manually include the bash_aliases file, and even then, I got an error about the -f option for export.
In order to actually get this working, I had to take out the function export line and manually include the bash_aliases file...

Related

How to run a cypher script file from Terminal with the cypher-shell neo4j command?

I have a cypher script file and I would like to run it directly.
All answers I could find on SO to the best of my knowledge use the command neo4j-shell which in my version (Neo4j server 3.5.5) seems to be deprecated and substituted with the command cyphershell.
Using the command sudo ./neo4j-community-3.5.5/bin/cypher-shell --help I got the following instructions.
usage: cypher-shell [-h] [-a ADDRESS] [-u USERNAME] [-p PASSWORD]
[--encryption {true,false}]
[--format {auto,verbose,plain}] [--debug] [--non-interactive] [--sample-rows SAMPLE-ROWS]
[--wrap {true,false}] [-v] [--driver-version] [--fail-fast | --fail-at-end] [cypher]
A command line shell where you can execute Cypher against an
instance of Neo4j. By default the shell is interactive but you can
use it for scripting by passing cypher directly on the command
line or by piping a file with cypher statements (requires Powershell
on Windows).
My file is the following which tries to create a graph from csv files and it comes from the book "Graph Algorithms".
WITH "https://github.com/neo4j-graph-analytics/book/raw/master/data" AS base
WITH base + "transport-nodes.csv" AS uri
LOAD CSV WITH HEADERS FROM uri AS row
MERGE (place:Place {id:row.id})
SET place.latitude = toFloat(row.latitude),
place.longitude = toFloat(row.latitude),
place.population = toInteger(row.population)
WITH "https://github.com/neo4j-graph-analytics/book/raw/master/data/" AS base
WITH base + "transport-relationships.csv" AS uri
LOAD CSV WITH HEADERS FROM uri AS row
MATCH (origin:Place {id: row.src})
MATCH (destination:Place {id: row.dst})
MERGE (origin)-[:EROAD {distance: toInteger(row.cost)}]->(destination)
When I try to pass the file directly with the command:
sudo ./neo4j-community-3.5.5/bin/cypher-shell neo_4.cypher
first it asks for username and password but after typing the correct password (the wrong password results in the error The client is unauthorized due to authentication failure.) I get the error:
Invalid input 'n': expected <init> (line 1, column 1 (offset: 0))
"neo_4.cypher"
^
When I try piping with the command:
sudo cat neo_4.cypher| sudo ./neo4j-community-3.5.5/bin/cypher-shell -u usr -p 'pwd'
no output is generated and no graph either.
How to run a cypher script file with the neo4j command cypher-shell?
Use cypher-shell -f yourscriptname. Check with --help for more description.
I think the key is here:
cypher-shell -- help
... Stuff deleted
positional arguments:
cypher an optional string of cypher to execute and then exit
This means that the paremeter is actual cypher code, not a file name. Thus, this works:
GMc#linux-ihon:~> cypher-shell "match(n) return n;"
username: neo4j
password: ****
+-----------------------------+
| n |
+-----------------------------+
| (:Job {jobName: "Job01"}) |
| (:Job {jobName: "Job02"}) |
But this doesn't (because the text "neo_4.cypher" isn't a valid cypher query)
cypher-shell neo_4.cypher
The help also says:
example of piping a file:
cat some-cypher.txt | cypher-shell
So:
cat neo_4.cypher | cypher-shell
should work. Possibly your problem is all of the sudo's. Specifically the cat ... | sudo cypher-shell. It is possible that sudo is protecting cypher-shell from some arbitrary input (although it doesn't seem to do so on my system).
If you really need to use sudo to run cypher, try using the following:
sudo cypher-shell arguments_as_needed < neo_4.cypher
Oh, also, your script doesn't have a return, so it probably won't display any data, but you should still see the summary reports of records loaded.
Perhaps try something simpler first such as a simple match ... return ... query in your script.
Oh, and don't forget to terminate the cypher query with a semi-colon!
The problem is in the cypher file: each line should end with a semicolon: ;. I still need sudo to run the program.
The file taken from the book seems to contain other errors as well actually.

How to import/load/run mysql file using golang?

I’m trying to run/load sql file into mysql database using this golang statement but this is not working:
exec.Command("mysql", "-u", "{username}", "-p{db password}", "{db name}", "<", file abs path )
But when i use following command in windows command prompt it’s working perfect.
mysql -u {username} -p{db password} {db name} < {file abs path}
So what is the problem?
As others have answered, you can't use the < redirection operator because exec doesn't use the shell.
But you don't have to redirect input to read an SQL file. You can pass arguments to the MySQL client to use its source command.
exec.Command("mysql", "-u", "{username}", "-p{db password}", "{db name}",
"-e", "source {file abs path}" )
The source command is a builtin of the MySQL client. See https://dev.mysql.com/doc/refman/5.7/en/mysql-commands.html
Go's exec.Command runs the first argument as a program with the rest of the arguments as parameters. The '<' is interpreted as a literal argument.
e.g. exec.Command("cat", "<", "abc") is the following command in bash: cat \< abc.
To do what you want you have got two options.
Run (ba)sh and the command as argument: exec.Command("bash", "-c", "mysql ... < full/path")
Pipe the content of the file in manually. See https://stackoverflow.com/a/36383984/8751302 for details.
The problem with the bash version is that is not portable between different operating systems. It won't work on Windows.
Go's os.exec package does not use the shell and does not support redirection:
Unlike the "system" library call from C and other languages, the os/exec package intentionally does not invoke the system shell and does not expand any glob patterns or handle other expansions, pipelines, or redirections typically done by shells.
You can call the shell explicitly to pass arguments to it:
cmd := exec.Command("/bin/sh", yourBashCommand)
Depending on what you're doing, it may be helpful to write a short bash script and call it from Go.

Passing parameters to package.json scripts [duplicate]

The scripts portion of my package.json currently looks like this:
"scripts": {
"start": "node ./script.js server"
}
...which means I can run npm start to start the server. So far so good.
However, I would like to be able to run something like npm start 8080 and have the argument(s) passed to script.js (e.g. npm start 8080 => node ./script.js server 8080). Is this possible?
npm 2 and newer
It's possible to pass args to npm run since npm 2 (2014). The syntax is as follows:
npm run <command> [-- <args>]
Note the -- separator, used to separate the params passed to npm command itself, and the params passed to your script.
With the example package.json:
"scripts": {
"grunt": "grunt",
"server": "node server.js"
}
here's how to pass the params to those scripts:
npm run grunt -- task:target // invokes `grunt task:target`
npm run server -- --port=1337 // invokes `node server.js --port=1337`
Note: If your param does not start with - or --, then having an explicit -- separator is not needed; but it's better to do it anyway for clarity.
npm run grunt task:target // invokes `grunt task:target`
Note below the difference in behavior (test.js has console.log(process.argv)): the params which start with - or -- are passed to npm and not to the script, and are silently swallowed there.
$ npm run test foobar
['C:\\Program Files\\nodejs\\node.exe', 'C:\\git\\myrepo\\test.js', 'foobar']
$ npm run test -foobar
['C:\\Program Files\\nodejs\\node.exe', 'C:\\git\\myrepo\\test.js']
$ npm run test --foobar
['C:\\Program Files\\nodejs\\node.exe', 'C:\\git\\myrepo\\test.js']
$ npm run test -- foobar
['C:\\Program Files\\nodejs\\node.exe', 'C:\\git\\myrepo\\test.js', 'foobar']
$ npm run test -- -foobar
['C:\\Program Files\\nodejs\\node.exe', 'C:\\git\\myrepo\\test.js', '-foobar']
$ npm run test -- --foobar
['C:\\Program Files\\nodejs\\node.exe', 'C:\\git\\myrepo\\test.js', '--foobar']
The difference is clearer when you use a param actually used by npm:
$ npm test --help // this is disguised `npm --help test`
npm test [-- <args>]
aliases: tst, t
To get the parameter value, see this question. For reading named parameters, it's probably best to use a parsing library like yargs or minimist; nodejs exposes process.argv globally, containing command line parameter values, but this is a low-level API (whitespace-separated array of strings, as provided by the operating system to the node executable).
You asked to be able to run something like npm start 8080. This is possible without needing to modify script.js or configuration files as follows.
For example, in your "scripts" JSON value, include--
"start": "node ./script.js server $PORT"
And then from the command-line:
$ PORT=8080 npm start
I have confirmed that this works using bash and npm 1.4.23. Note that this work-around does not require GitHub npm issue #3494 to be resolved.
You could also do that:
In package.json:
"scripts": {
"cool": "./cool.js"
}
In cool.js:
console.log({ myVar: process.env.npm_config_myVar });
In CLI:
npm --myVar=something run-script cool
Should output:
{ myVar: 'something' }
Update: Using npm 3.10.3, it appears that it lowercases the process.env.npm_config_ variables? I'm also using better-npm-run, so I'm not sure if this is vanilla default behavior or not, but this answer is working. Instead of process.env.npm_config_myVar, try process.env.npm_config_myvar
jakub.g's answer is correct, however an example using grunt seems a bit complex.
So my simpler answer:
- Sending a command line argument to an npm script
Syntax for sending command line arguments to an npm script:
npm run [command] [-- <args>]
Imagine we have an npm start task in our package.json to kick off webpack dev server:
"scripts": {
"start": "webpack-dev-server --port 5000"
},
We run this from the command line with npm start
Now if we want to pass in a port to the npm script:
"scripts": {
"start": "webpack-dev-server --port process.env.port || 8080"
},
running this and passing the port e.g. 5000 via command line would be as follows:
npm start --port:5000
- Using package.json config:
As mentioned by jakub.g, you can alternatively set params in the config of your package.json
"config": {
"myPort": "5000"
}
"scripts": {
"start": "webpack-dev-server --port process.env.npm_package_config_myPort || 8080"
},
npm start will use the port specified in your config, or alternatively you can override it
npm config set myPackage:myPort 3000
- Setting a param in your npm script
An example of reading a variable set in your npm script. In this example NODE_ENV
"scripts": {
"start:prod": "NODE_ENV=prod node server.js",
"start:dev": "NODE_ENV=dev node server.js"
},
read NODE_ENV in server.js either prod or dev
var env = process.env.NODE_ENV || 'prod'
if(env === 'dev'){
var app = require("./serverDev.js");
} else {
var app = require("./serverProd.js");
}
As of npm 2.x, you can pass args into run-scripts by separating with --
Terminal
npm run-script start -- --foo=3
Package.json
"start": "node ./index.js"
Index.js
console.log('process.argv', process.argv);
I had been using this one-liner in the past, and after a bit of time away from Node.js had to try and rediscover it recently. Similar to the solution mentioned by #francoisrv, it utilizes the npm_config_* variables.
Create the following minimal package.json file:
{
"name": "argument",
"version": "1.0.0",
"scripts": {
"argument": "echo \"The value of --foo is '${npm_config_foo}'\""
}
}
Run the following command:
npm run argument --foo=bar
Observe the following output:
The value of --foo is 'bar'
All of this is nicely documented in the npm official documentation:
https://docs.npmjs.com/using-npm/config
Note: The Environment Variables heading explains that variables inside scripts do behave differently to what is defined in the documentation. This is true when it comes to case sensitivity, as well whether the argument is defined with a space or equals sign.
Note: If you are using an argument with hyphens, these will be replaced with underscores in the corresponding environment variable. For example, npm run example --foo-bar=baz would correspond to ${npm_config_foo_bar}.
Note: For non-WSL Windows users, see #Doctor Blue's comments below... TL;DR replace ${npm_config_foo} with %npm_config_foo%.
Use process.argv in your code then just provide a trailing $* to your scripts value entry.
As an example try it with a simple script which just logs the provided arguments to standard out echoargs.js:
console.log('arguments: ' + process.argv.slice(2));
package.json:
"scripts": {
"start": "node echoargs.js $*"
}
Examples:
> npm start 1 2 3
arguments: 1,2,3
process.argv[0] is the executable (node), process.argv[1] is your script.
Tested with npm v5.3.0 and node v8.4.0
Most of the answers above cover just passing the arguments into your NodeJS script, called by npm. My solution is for general use.
Just wrap the npm script with a shell interpreter (e.g. sh) call and pass the arguments as usual. The only exception is that the first argument number is 0.
For example, you want to add the npm script someprogram --env=<argument_1>, where someprogram just prints the value of the env argument:
package.json
"scripts": {
"command": "sh -c 'someprogram --env=$0'"
}
When you run it:
% npm run -s command my-environment
my-environment
If you want to pass arguments to the middle of an npm script, as opposed to just having them appended to the end, then inline environment variables seem to work nicely:
"scripts": {
"dev": "BABEL_ARGS=-w npm run build && cd lib/server && nodemon index.js",
"start": "npm run build && node lib/server/index.js",
"build": "mkdir -p lib && babel $BABEL_ARGS -s inline --stage 0 src -d lib",
},
Here, npm run dev passes the -w watch flag to babel, but npm run start just runs a regular build once.
For PowerShell users on Windows
The accepted answer did not work for me with npm 6.14. Neither adding no -- nor including it once does work. However, putting -- twice or putting "--" once before the arguments does the trick. Example:
npm run <my_script> -- -- <my arguments like --this>
Suspected reason
Like in bash, -- instructs PowerShell to treat all following arguments as literal strings, and not options (E.g see this answer). The issues seems to be that the command is interpreted one time more than expected, loosing the '--'. For instance, by doing
npm run <my_script> -- --option value
npm will run
<my_script> value
However, doing
npm run <my_script> "--" --option value
results in
<my_script> "--option" "value"
which works fine.
This doesn't really answer your question but you could always use environment variables instead:
"scripts": {
"start": "PORT=3000 node server.js"
}
Then in your server.js file:
var port = process.env.PORT || 3000;
I've found this question while I was trying to solve my issue with running sequelize seed:generate cli command:
node_modules/.bin/sequelize seed:generate --name=user
Let me get to the point. I wanted to have a short script command in my package.json file and to provide --name argument at the same time
The answer came after some experiments. Here is my command in package.json
"scripts: {
"seed:generate":"NODE_ENV=development node_modules/.bin/sequelize seed:generate"
}
... and here is an example of running it in terminal to generate a seed file for a user
> yarn seed:generate --name=user
> npm run seed:generate -- --name=user
FYI
yarn -v
1.6.0
npm -v
5.6.0
Note: This approach modifies your package.json on the fly, use it if you have no alternative.
I had to pass command line arguments to my scripts which were something like:
"scripts": {
"start": "npm run build && npm run watch",
"watch": "concurrently \"npm run watch-ts\" \"npm run watch-node\"",
...
}
So, this means I start my app with npm run start.
Now if I want to pass some arguments, I would start with maybe:
npm run start -- --config=someConfig
What this does is: npm run build && npm run watch -- --config=someConfig. Problem with this is, it always appends the arguments to the end of the script. This means all the chained scripts don't get these arguments(Args maybe or may not be required by all, but that's a different story.). Further when the linked scripts are called then those scripts won't get the passed arguments. i.e. The watch script won't get the passed arguments.
The production usage of my app is as an .exe, so passing the arguments in the exe works fine but if want to do this during development, it gets problamatic.
I couldn't find any proper way to achieve this, so this is what I have tried.
I have created a javascript file: start-script.js at the parent level of the application, I have a "default.package.json" and instead of maintaining "package.json", I maintain "default.package.json". The purpose of start-script.json is to read default.package.json, extract the scripts and look for npm run scriptname then append the passed arguments to these scripts. After this, it will create a new package.json and copy the data from default.package.json with modified scripts and then call npm run start.
const fs = require('fs');
const { spawn } = require('child_process');
// open default.package.json
const defaultPackage = fs.readFileSync('./default.package.json');
try {
const packageOb = JSON.parse(defaultPackage);
// loop over the scripts present in this object, edit them with flags
if ('scripts' in packageOb && process.argv.length > 2) {
const passedFlags = ` -- ${process.argv.slice(2).join(' ')}`;
// assuming the script names have words, : or -, modify the regex if required.
const regexPattern = /(npm run [\w:-]*)/g;
const scriptsWithFlags = Object.entries(packageOb.scripts).reduce((acc, [key, value]) => {
const patternMatches = value.match(regexPattern);
// loop over all the matched strings and attach the desired flags.
if (patternMatches) {
for (let eachMatchedPattern of patternMatches) {
const startIndex = value.indexOf(eachMatchedPattern);
const endIndex = startIndex + eachMatchedPattern.length;
// save the string which doen't fall in this matched pattern range.
value = value.slice(0, startIndex) + eachMatchedPattern + passedFlags + value.slice(endIndex);
}
}
acc[key] = value;
return acc;
}, {});
packageOb.scripts = scriptsWithFlags;
}
const modifiedJSON = JSON.stringify(packageOb, null, 4);
fs.writeFileSync('./package.json', modifiedJSON);
// now run your npm start script
let cmd = 'npm';
// check if this works in your OS
if (process.platform === 'win32') {
cmd = 'npm.cmd'; // https://github.com/nodejs/node/issues/3675
}
spawn(cmd, ['run', 'start'], { stdio: 'inherit' });
} catch(e) {
console.log('Error while parsing default.package.json', e);
}
Now, instead of doing npm run start, I do node start-script.js --c=somethis --r=somethingElse
The initial run looks fine, but haven't tested thoroughly. Use it, if you like for you app development.
I find it's possible to just pass variables exactly as you would to Node.js:
// index.js
console.log(process.env.TEST_ENV_VAR)
// package.json
...
"scripts": { "start": "node index.js" },
...
TEST_ENV_VAR=hello npm start
Prints out "hello"
Separate your arguments using -- from the script and add all the required arguments, we can later access them by index.
npm run start -- myemail#gmail.com 100
You can get params in node using
const params = process.argv.slice(2);
console.log(params);
Output
['myemail#gmail.com', '100']
From what I see, people use package.json scripts when they would like to run script in simpler way. For example, to use nodemon that installed in local node_modules, we can't call nodemon directly from the cli, but we can call it by using ./node_modules/nodemon/nodemon.js. So, to simplify this long typing, we can put this...
...
scripts: {
'start': 'nodemon app.js'
}
...
... then call npm start to use 'nodemon' which has app.js as the first argument.
What I'm trying to say, if you just want to start your server with the node command, I don't think you need to use scripts. Typing npm start or node app.js has the same effort.
But if you do want to use nodemon, and want to pass a dynamic argument, don't use script either. Try to use symlink instead.
For example using migration with sequelize. I create a symlink...
ln -s node_modules/sequelize/bin/sequelize sequelize
... And I can pass any arguement when I call it ...
./sequlize -h /* show help */
./sequelize -m /* upgrade migration */
./sequelize -m -u /* downgrade migration */
etc...
At this point, using symlink is the best way I could figure out, but I don't really think it's the best practice.
I also hope for your opinion to my answer.
I know there is an approved answer already, but I kinda like this JSON approach.
npm start '{"PROJECT_NAME_STR":"my amazing stuff", "CRAZY_ARR":[0,7,"hungry"], "MAGICAL_NUMBER_INT": 42, "THING_BOO":true}';
Usually I have like 1 var I need, such as a project name, so I find this quick n' simple.
Also I often have something like this in my package.json
"scripts": {
"start": "NODE_ENV=development node local.js"
}
And being greedy I want "all of it", NODE_ENV and the CMD line arg stuff.
You simply access these things like so in your file (in my case local.js)
console.log(process.env.NODE_ENV, starter_obj.CRAZY_ARR, starter_obj.PROJECT_NAME_STR, starter_obj.MAGICAL_NUMBER_INT, starter_obj.THING_BOO);
You just need to have this bit above it (I'm running v10.16.0 btw)
var starter_obj = JSON.parse(JSON.parse(process.env.npm_config_argv).remain[0]);
Anyhoo, question already answered. Thought I'd share, as I use this method a lot.
I settled for something like this, look at the test-watch script:
"scripts": {
"dev": "tsc-watch --onSuccess \"node ./dist/server.js\"",
"test": "tsc && cross-env NODE_OPTIONS=--experimental-vm-modules NODE_NO_WARNINGS=1 jest",
"test-watch": "cross-env NODE_OPTIONS=--experimental-vm-modules NODE_NO_WARNINGS=1 tsc-watch --onSuccess",
},
You invoke the test-watch script like this:
// Run all tests with odata in their name
npm run test-watch "jest odata"
npm run script_target -- < argument > Basically this is the way of passing the command line arguments but it will work only in case of when script have only one command running like I am running a command i.e. npm run start -- 4200
"script":{
"start" : "ng serve --port="
}
This will run for passing command line parameters but what if we run more then one command together like npm run build c:/workspace/file
"script":{
"build" : "copy c:/file <arg> && ng build"
}
but it will interpreter like this while running copy c:/file && ng build c:/work space/file
and we are expected something like this
copy c:/file c:/work space/file && ng build
Note :- so command line parameter only work ad expected in case of only one command in a script.
I read some answers above in which some of them are writing that you can access the command line parameter using $ symbol but this will not gonna work
Try cross-env NPM package.
Easy to use. Easy to install. Cross all platform.
Example:
set arguments for command
// package.json
"scripts": {
“test”: “node test.js”,
“test-with-env-arg”: “cross-env YourEnvVarName=strValue yarn test,
}
get arguments from process.env
// test.js
const getCommandLineArg = Boolean(process.env.YourEnvVarName === 'true') // Attention: value of process.env.* is String type, not number || boolean
i had the same issue when i need to deploy to different environments
here is the package.json pre and post the updates.
scripts:
{"deploy-sit": "sls deploy --config resources-sit.yml",
"deploy-uat": "sls deploy --config resources-uat.yml",
"deploy-dev": "sls deploy --config resources-dev.yml"}
but here is the correct method to adopt the environment variables rather than repeating ourselves
scripts:{"deploy-env": "sls deploy --config resources-$ENV_VAR.yml"}
finally you can deploy by running
ENV_VAR=dev npm run deploy-env

export shell function to su as a user with ksh default shell

I have a situation where only root can mailx, and only ops can restart the process. I want to make an automated script that both restarts the process and sends an email about doing so.
When I try this using a function the function is "not found".
I had something like:
#!/usr/bin/bash
function restartprocess {
/usr/bin/processcontrol.sh start
}
export -f restartprocess
su - ops -c "restartprocess"
mailx -s "process restarted" myemail.mydomain.com < emailmessage.txt
exit 0
It told me that the function was not found. After some troubleshooting, it turned out that the ops user's default shell is ksh.
I tried changing the script to run in ksh, and changing "export -f" to "typeset -xf", and still the function was not found. Like:
ksh: exportfunction not found
I finally gave up and just called the script (that was in the function directly) and that worked. It was like:
su - ops -c "/usr/bin/processcontrol.sh start"
(This is all of course a simplification of the real script).
Given that user ops has default shell is ksh and I can't change that or modify sudoers, is there a way to export a function such that I can su as ops (and I need to run ops's profile) and execute that function?
I made sure ops user had permission to the directory of the script I wanted it to execute, and permission to run that script.
Any education about this would be appreciated!
There are many restrictions for exporting functions, especially
combined with su - ... with different accounts and different shells.
Instead, turn your script inside out and put all of the command
that is to be run inside a function in the calling shell.
Something like: (Both bash and ksh)
#!/usr/bin/bash
function restartprocess {
/bin/su - ops -c "/usr/bin/processcontrol.sh start"
}
if restartprocess; then
mailx -s "process restarted" \
myemail#mydomain.com < emailmessage.txt
fi
exit 0
This will hide all of the /bin/su processing inside the restartprocess function, and can be expanded at will.

How to solve %GTM-E-GDINVALID, Unrecognized Global Directory file format: mumps.gld, expected label: GTCGBDUNX007, found: GTCGBDUNX006?

I am getting this error with GT.M:
%GTM-E-GDINVALID, Unrecognized Global Directory file format: /home/blah/gt.m/example/mumps.gld, expected label: GTCGBDUNX007, found: GTCGBDUNX006
Here is what I did so far:
get the version http://sourceforge.net/projects/fis-gtm/
tar -xzf gtm_V55000_linux_i686_pro.tar.gz
chmod +x semstat2 mupip mumps lke gtmsecshr gtcm_shmclean gtcm_server gtcm_play gtcm_pkdisp gtcm_gnp_server geteuid ftok dse
Now we start like this in Bash:
mkdir example; cd example
...and invoke the mumps from the parent dir:
../mumps -r GDE
The output is this:
%GDE-I-GDUSEDEFS, Using defaults for Global Directory
/home/blah/gt.m/example/mumps.gld
Now we set the working dir to create the gld file.
GDE> change -s DEFAULT -f=/home/blah/gt.m/gt.m/example/
GDE> exit
The output from the command is this :
>%GDE-I-VERIFY, Verification OK
>%GDE-I-GDCREATE, Creating Global Directory file
> /home/blah/gt.m/example/mumps.gld
Now this creates a v6 version of gld, which mupip does not like:
strings mumps.gld | head -1
Which contains this string:
GTCGBDUNX006H
But mupip expects a 7 not a 6!
../mupip create
>%GTM-E-GDINVALID, Unrecognized Global Directory file format: >/home/blah/gt.m/example/mumps.gld, expected label: GTCGBDUNX007, found: GTCGBDUNX006
If I just edit the file and replace the 6 with a 7,
../mupip create.
This works!
Now I have a dat file, and go to gtm to save something :
GTM>s ^foo("blah")=1
%GTM-E-GDINVALID, Unrecognized Global Directory file format: >/home/blah/gt.m/example/mumps.gld, expected label: GTCGBDUNX006, found: GTCGBDUNX007
Oh so that wants a v6, so good thing i backed up the old, one, i replace it .
GTM>s ^foo("blah")=1
that works
GTM>zwr ^foo(*)
>^foo("blah")=1
So the data is stored.
Can anyone please explain this? In detail? Why does mupip operate with a different version number?
Note, I did not run any other commands, I am just learning and don't want to execute any huge install routines a root that I don't understand.
In your steps you don't show whether you installed GT.M or not.
That is only the unziped version, first:
chmod 777 configure
./configure
The installation will produce new files in the gtm_dist directory.
You either have GT.M already installed (and I would guess it is an older version) on your system somewhere else and have some environment variable defined for it in your bash/tcsh/*sh environment, or you didn't provide all the step you did to get to that error.
My guess is that you already have GT.M installed somewhere and your above commands uses part of that installation. You can easily verify this using this command : env | grep gtm.
If I follow your steps mentioned above, I get this result :
laurent#laurent /tmp/test $ tar -zxf ~/Projects/gtm_V55000_linux_i686_pro.tar.gz
laurent#laurent /tmp/test $ chmod +x semstat2 mupip mumps lke gtmsecshr gtcm_shmclean gtcm_server gtcm_play gtcm_pkdisp gtcm_gnp_server geteuid ftok dse
laurent#laurent /tmp/test $ mkdir example; cd example
laurent#laurent /tmp/test/example $ ../mumps -r GDE
%GTM-E-GTMDISTUNDEF, Environment variable $gtm_dist is not defined
So, I as said, you either did something else, or have a different GT.M version already installed and this is why some commands expect different versions of GLD.
As Bhaskar has noted in your cross post on Hardhats. Make sure you follow the installation instructions for GT.M. Instructions can be found in Chapter 2 of the UNIX Administration and Operations Guide