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Top Forums Shell Programming and Scripting Help getting a UNIX shell script to look at multiple files. Post 302878359 by rebmonk on Thursday 5th of December 2013 09:25:21 PM
Old 12-05-2013
Help getting a UNIX shell script to look at multiple files.

Hey everyone! I made a shell script that would go through a file and replace any phrase or letter with another phrase or letter. Helps update variable names or values. The following code is this:

Code:
#!/bin/sh

Word1="$1"
Replace1="$2"
File1="$3"

arg=$( echo "$Word1" | sed 's:[]\[\^\$\.\*\/]:\\&:g' )
sed -e "s/$arg/$Replace1/g" "$File1" > "$File1.updated"
mv "File1.updated" "$File1"

This works. Now I am trying to get it to do the same thing but for up to three files, and am running into problems.

I tried adding:
Code:
File2="$4"
File3="$5"

to cover the two additional files. However, how would I create a loop where it uses the above and then does it on the other two files?

The other thing I tried was adding the code after the first part:
Code:
while ["$File2" > 0];
do
sed -e "s/$arg/$Replace1/g" "$File2" > "$File2.updated"
mv "File2.updated" "$File2"
done

but that isn't working either. Any help?

Last edited by Don Cragun; 12-05-2013 at 11:15 PM.. Reason: Add CODE tags.
 

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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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