07-07-2004
10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
While writing a shell script i happen to store some value in a string. Lets say the value is 59788.
Now in this script i want to get the value 9788 removing the first charater 5. The original string length usually remains constant.
Is there a single line command to do this or any simple way to... (4 Replies)
Discussion started by: npn
4 Replies
2. Shell Programming and Scripting
How do you test if a string is a number?
Trying to do something like this:
x="AS"
if( x is not a number ); then
x=0
fi
Because I want to do number arithmetic with x. (3 Replies)
Discussion started by: eur0dad
3 Replies
3. Programming
HI
Hi I have a character string which contains some special characters and I need it to display as a hex string.
For example, the sample i/p string: ×¥ïA Å gïÛý and
the o/p should be : D7A5EF4100C5010067EFDBFD
Any pointers or sample code pls. (5 Replies)
Discussion started by: axes
5 Replies
4. Shell Programming and Scripting
i have a file contains like this:
i want to create a script that will insert a comma "." after the 10th character so it would be look like this
thanks in advance (5 Replies)
Discussion started by: dakid
5 Replies
5. Shell Programming and Scripting
How can I extract the last character of a string (withou knowing how many characters are in that string ! ) (8 Replies)
Discussion started by: annelisa
8 Replies
6. Shell Programming and Scripting
If I have a string defined as:
MyString=abcde
echo $MyString
How can I loop through it character by character? I haven't been able to find a way to index the string so that I loop through it.
shew01 (10 Replies)
Discussion started by: shew01
10 Replies
7. Shell Programming and Scripting
hi
i try to test the last character in a variable (here $i )
assume i=kljlkjlkA it should be KO and lkjljjlT KO
if
then
echo "ending with A"
else
echo "no A at the end"
fi
whether i is ending or not with A i got "no A at the end"
i tried with simple [ double this is the... (3 Replies)
Discussion started by: Nicol
3 Replies
8. UNIX for Dummies Questions & Answers
Hello, can someone please explain to me why this happens:
myserver#echo "$nothing"
myserver#if ; then echo "nothing is a zero length string"; fi
nothing is a zero length string
myserver#if ; then echo "nothing is also a non-zero length string, apparently"; fi
nothing is also a non-zero... (5 Replies)
Discussion started by: longjon
5 Replies
9. Shell Programming and Scripting
Hello, Unix-Forums!
Is there a command that can check how long a user-entered string is?
Please don't give me a code, just the name of the command (playing around yourself is much more fun than just pasting code)
edit: I'm sorry, first hit of the forum search gave me the answer. (1 Reply)
Discussion started by: intelinside
1 Replies
10. Shell Programming and Scripting
Hi,
Anyone can help using SED searches a character string for a specified delimiter character, and returns a leading or trailing space/blank.
Text file :
"1"|"ExternalClassDEA519CF5"|"Art1"
"2"|"ExternalClass563EA516C"|"Art3"
"3"|"ExternalClass305ED16B8"|"Art9"
...
...
... (2 Replies)
Discussion started by: fspalero
2 Replies
LEARN ABOUT LINUX
npm-run-script
NPM-RUN-SCRIPT(1) NPM-RUN-SCRIPT(1)
NAME
npm-run-script - Run arbitrary package scripts
SYNOPSIS
npm run-script <command> [--silent] [-- <args>...]
alias: npm run
DESCRIPTION
This runs an arbitrary command from a package's "scripts" object. If no "command" is provided, it will list the available scripts.
run[-script] is used by the test, start, restart, and stop commands, but can be called directly, as well. When the scripts in the package
are printed out, they're separated into lifecycle (test, start, restart) and directly-run scripts.
As of ` https://blog.npmjs.org/post/98131109725/npm-2-0-0, you can use custom arguments when executing scripts. The special option -- is
used by getopt https://goo.gl/KxMmtG to delimit the end of the options. npm will pass all the arguments after the -- directly to your
script:
npm run test -- --grep="pattern"
The arguments will only be passed to the script specified after npm run and not to any pre or post script.
The env script is a special built-in command that can be used to list environment variables that will be available to the script at run-
time. If an "env" command is defined in your package, it will take precedence over the built-in.
In addition to the shell's pre-existing PATH, npm run adds node_modules/.bin to the PATH provided to scripts. Any binaries provided by
locally-installed dependencies can be used without the node_modules/.bin prefix. For example, if there is a devDependency on tap in your
package, you should write:
"scripts": {"test": "tap test/*.js"}
instead of
"scripts": {"test": "node_modules/.bin/tap test/*.js"}
to run your tests.
The actual shell your script is run within is platform dependent. By default, on Unix-like systems it is the /bin/sh command, on Windows it
is the cmd.exe. The actual shell referred to by /bin/sh also depends on the system. As of `
https://github.com/npm/npm/releases/tag/v5.1.0 you can customize the shell with the script-shell configuration.
Scripts are run from the root of the module, regardless of what your current working directory is when you call npm run. If you want your
script to use different behavior based on what subdirectory you're in, you can use the INIT_CWD environment variable, which holds the full
path you were in when you ran npm run.
npm run sets the NODE environment variable to the node executable with which npm is executed. Also, if the --scripts-prepend-node-path is
passed, the directory within which node resides is added to the PATH. If --scripts-prepend-node-path=auto is passed (which has been the
default in npm v3), this is only performed when that node executable is not found in the PATH.
If you try to run a script without having a node_modules directory and it fails, you will be given a warning to run npm install, just in
case you've forgotten.
You can use the --silent flag to prevent showing npm ERR! output on error.
You can use the --if-present flag to avoid exiting with a non-zero exit code when the script is undefined. This lets you run potentially
undefined scripts without breaking the execution chain.
SEE ALSO
o npm help 7 scripts
o npm help test
o npm help start
o npm help restart
o npm help stop
o npm help 7 config
January 2019 NPM-RUN-SCRIPT(1)