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Replace Every occurrence of a word in a file

Terminal - Replace Every occurrence of a word in a file
perl -p -i -e 's/this/that/g' filename
2009-08-09 20:53:50
User: rader5
Functions: perl
2
Replace Every occurrence of a word in a file

Replace 'this' with 'that'

Alternatives

There is 1 alternative - vote for the best!

Terminal - Alternatives

Know a better way?

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What others think

What make this better than using sed -i (for inplace changes) ?

Comment by CodSpirit 244 weeks and 2 days ago

sed < perl

perl regexes are the most full-featured of any language bar none. First there was sed, then came perl which built on what awk and sed had to offer and made something out of them which is now so much more.

What you don't see here is the unbelievably feature-rich syntax and powerful (posix-compliant) extensions of perl's regexes. For more on that, please refer to the manpage "perlre" or simply type "perldoc perlre" on a machine where the perl documentation is installed. You can also check out The book by Jeffrey Friedl "Mastering Regular Expressions"

@rader5 - this is a duplicate of previously contributed commands. Double-check next time. Thanks for contribulting.

Comment by linuxrawkstar 244 weeks and 1 day ago

To my knowledge only the GNU implementation of sed has this option. What about using a file editor instead of abusing a stream editor?

echo "%s/this/that/g\nwq" | ed filename

This also works with ex in place of ed. If the shell is bash you could also use

ed filename <<< "%s/this/that/g^Jwq^J"

again with the option of using ex in place of vi. The command requires you to enter literal Ctrl-J - to do so use Ctrl-V Ctrl-J in the default (emacs) input mode or Ctrl-Q Ctrl-J in the (alternative) vi input mode.

Comment by penpen 243 weeks and 5 days ago

To my knowledge only the GNU implementation of sed has this option. What about using a file editor instead of abusing a stream editor?

echo "%s/this/that/g\nwq" | ed filename

This also works with ex in place of ed. If the shell is bash you could also use

ed filename <<< "%s/this/that/g^Jwq^J"

again with the option of using ex in place of vi. The command requires you to enter literal Ctrl-J - to do so use Ctrl-V Ctrl-J in the default (emacs) input mode or Ctrl-Q Ctrl-J in the (alternative) vi input mode.

Comment by penpen 243 weeks and 5 days ago

still no means to remove such accidents :(

Comment by penpen 243 weeks and 5 days ago

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