Run bash commands and csh commands in same script

Question

I was going through a project and I saw there are two scripts:

one runs in bash and other in csh.

Is there any way to merge both the files and run as a single script and one file only, means after merging there should not be the earlier files? This reduce the code size, and will be more user-friendly.

For example:

#!/bin/sh

setenv PROJ_ROOT $PWD
setenv PROJ_OS freebsd
setenv OS freebsd

#!/bin/csh
export ICP=`pwd`

#both /sh
if `uname -r | grep -c "10.2-RELEASE"` == 1 setenv PROJ_WITHOUT_THREAD 1

To start with the if statement at the end is syntactically wrong. Not sure what you're trying to accomplish here. Could you rephrase the question to make it clearer? — sjsam
– sjsam, Commented Aug 10, 2016 at 14:42
The last 'if' checks for the OS version, that if its 10.2-Release, set that variable, that's it. I don't think anything more is needed to clarify. — Dr. Essen
– Dr. Essen, Commented Aug 10, 2016 at 15:02

tripleee · Accepted Answer · 2016-08-10 14:47:52Z

1

Your example script doesn't make sense either way; a shell script cannot set variables in its parent process.

For a superficial compatibility hack, you could declare a function setenv; then most of your example script will run in sh.

setenv () {
    "$1"=$2
    export "$1"
}

Your if clause I believe will be a syntax error in both shells. I can't think of a way to write it portably, but my recommendation would be to abandon csh anyhow.

answered Aug 10, 2016 at 14:47

tripleee

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1 Comment

Dr. Essen Over a year ago

I know it doesn't make any sense but situation comes, I asked a possibility which can add to my knowledge. :)

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