beginner scripting questions User variables Post: 302582325

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Top Forums Shell Programming and Scripting beginner scripting questions User variables Post 302582325 by austing5 on Thursday 15th of December 2011 02:03:51 PM

12-15-2011

Registered User

Quote:

Originally Posted by BeefStu

You can call your script name anything you like. Ie bla.bla xx ....

Typically the first line in the scirpt is the shabang command, this dictates
what shell you are using.. For the most flexibility I would suggest using /bin/ksh Can I assume your other example was /bin/csh and not /bin/tcsh

Lastly you can set a variable like this:

Code:

 
value="test"
let int=3

These are not terribly difficult questions so the best way to find your answers would be to test... Good luck

The way they teach us has always been /bin/sh i was just seeing what was the difference i'm guessing different shells use different command like "set" and "let" . Thanks!

---------- Post updated at 02:03 PM ---------- Previous update was at 01:58 PM ----------

Quote:

Originally Posted by Corona688

Linux and UNIX don't care about the filename at all. They check the first few bytes in the file to see what it is.

All the top line does is tell the OS what shell to use.

If you want to use tcsh, it should be #!/bin/tcsh

If you want to use sh, it should be #!/bin/sh

They both have 'set', actually. But they're not the same 'set'. So it depends which programming language you have been writing for!

Easy:

Code:

VAR="something"

Note that you can't put spaces between VAR, =, and ". like you might in tcsh. It has to be VAR="... with no spaces at all except inside quotes. This is because of the way BASH lets you set variables before running a program:

thats why it wasen't working ! "spaces" awesome!!!! thank you!

austing5

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LEARN ABOUT DEBIAN

surfraw-update-path

SURFRAW-UPDATE-PATH(1)					User Contributed Perl Documentation				    SURFRAW-UPDATE-PATH(1)

NAME

       surfraw-update-path - updates PATH in shell config files

SYNOPSIS

       surfraw-update-path [-add] [-remove] [-check] [-sys] [-all] [-help] [-shell=SHELL]

DESCRIPTION

       surfraw-update-path adds the surfraw elvi directory (/usr/lib/surfraw) to your PATH in your shell's config file.

       Currently it supports bash, sh, csh, tcsh, ash, dash, ksh, pdksh, zsh, rc, and es

       Don't forget to login again or source your login files for it to take effect.

OPTIONS

       -check
	   Checks to see if the surfraw config code is present.  This is the default.

       -add
	   Adds the surfraw config code.

       -remove
	   Removes the surfraw config code

       -sys
	   Updates the system-wide shell config instead of the user.  Must be done as root.

       -shell=SHELL
	   Selects the shell to configure. Defaults to the value of the $SHELL environment variable.

	   Currently supported shells are:

	   sh, ash, bash, dash, csh, tcsh, ksh, pdksh, zsh, rc, and es.

       -all
	   Attempts to configure the startup files for all known shells

       -help
	   Gives a usage message

RETURN VALUE

       -check returns 0 if the surfraw code is present in the file, 1 if it is not found, or 2 on error.

       All other options return 0 on success, or 2 on error.

ENVIRONMENT

       SHELL
	   Used to determine which shell to configure, if -shell is not given.

       HOME
	   Used to find users config files.

       ENV Used by posix-compliant shells to specify a startup rc file.

       ZDOTDIR
	   Used to find user config files for zsh. If not set, defaults to HOME.

SEE ALSO

       surfraw(1), sh(1), ash(1), bash(1), dash(1), csh(1), tcsh(1), ksh(1), pdksh(1), zsh(1), rc(1), es(1)

AUTHOR

       Ian Beckwith <ianb@erislabs.net>

perl v5.12.4							    2011-07-12						    SURFRAW-UPDATE-PATH(1)