Replacing string in text file using bash

Question

I'm trying to replace a string in a file using a script in linux.

After reading this post : Find and Replace Inside a Text File from a Bash Command

I used the following line

perl -pi -e "s/myparam/$MY_VAR/g" /res/raw/configuration.xml

But the problem is that MY_VARcontains a url (something like https://stackoverflow.com/questions/ask), which contains / and it doesn't replaces the string at all.

I assume i don't need to write a script that does find and replace to all the / and there is a simple way to solve it.

Thanks

score 1 · Answer 1 · answered Nov 20 '14 at 10:41

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You can use this sed with alternate delimiter:

sed -i.bak "s~myparam~$MY_VAR~g" /res/raw/configuration.xml

Perl also allows same so use:

perl -pi -e "s~myparam~$MY_VAR~g" /res/raw/configuration.xml

answered Nov 20 '14 at 10:41

anubhava

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You can also use an alternate delimiter in Perl. – Barmar Nov 20 '14 at 10:42
Yes right, I was just verifying it first before adding that to answer. Thanks. – anubhava Nov 20 '14 at 10:43

score 1 · Accepted Answer · answered Nov 20 '14 at 10:50

1

perl -pi -e 's/myparam/$ENV{MY_VAR}/g' /res/raw/configuration.xml

or put $MY_VAR on command line instead of interpolating it into perl one liner,

perl -pi -e 'BEGIN{$s = shift} s/myparam/$s/g' $MY_VAR /res/raw/configuration.xml

answered Nov 20 '14 at 10:50

mpapec

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`$ENV{MY_VAR}` would be the natural way to use a shell variable. – TLP Nov 20 '14 at 10:52
@TLP tnx for comment. – mpapec Nov 20 '14 at 10:54

Replacing string in text file using bash

2 Answers2