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Full Discussion: Declaring functions in CSH
Top Forums Shell Programming and Scripting Declaring functions in CSH Post 302103968 by sb008 on Monday 22nd of January 2007 02:32:51 PM
Old 01-22-2007
Quote:
Originally Posted by tipsy
Hi all,
It might seem like a very trivial question but I am new to shell scripting so excuse for that.

I have an existing script in CSH. I need to create a function in the script which takes some parameters and returns a result. Can someone please let me know the syntax for function declaration and how to call the function passing parameters.

Also if someone has a good tutorial with examples on CSH please send me the link.

Thanks in advance.

Regards,
Tipsy
#!/usr/bin/csh

ThisIsAFunction()
{
echo "$1 $2"
}

#Main

VAR1=Hi
VAR2=there
ThisIsAfunction $VAR1 $VAR2

-------------------

Running this script would result in:

Hi there

on your screen.

Passing parameters to a functions is like passing arguments to a script. They are stored in $1, $2, $3 etc
Running this script would result in the following
 

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ATF-SH(1)						    BSD General Commands Manual 						 ATF-SH(1)

NAME
atf-sh [-s shell] -- interpreter for shell-based test programs SYNOPSIS
atf-sh script DESCRIPTION
atf-sh is an interpreter that runs the test program given in script after loading the atf-sh(3) library. atf-sh is not a real interpreter though: it is just a wrapper around the system-wide shell defined by ATF_SHELL. atf-sh executes the inter- preter, loads the atf-sh(3) library and then runs the script. You must consider atf-sh to be a POSIX shell by default and thus should not use any non-standard extensions. The following options are available: -s shell Specifies the shell to use instead of the value provided by ATF_SHELL. ENVIRONMENT
ATF_LIBEXECDIR Overrides the builtin directory where atf-sh is located. Should not be overridden other than for testing purposes. ATF_PKGDATADIR Overrides the builtin directory where libatf-sh.subr is located. Should not be overridden other than for testing purposes. ATF_SHELL Path to the system shell to be used in the generated scripts. Scripts must not rely on this variable being set to select a specific interpreter. EXAMPLES
Scripts using atf-sh(3) should start with: #! /usr/bin/env atf-sh Alternatively, if you want to explicitly choose a shell interpreter, you cannot rely on env(1) to find atf-sh. Instead, you have to hardcode the path to atf-sh in the script and then use the -s option afterwards as a single parameter: #! /path/to/bin/atf-sh -s/bin/bash ENVIRONMENT
ATF_SHELL Path to the system shell to be used in the generated scripts. SEE ALSO
atf-sh(3) BSD
September 27, 2014 BSD
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