Edit a single line in multiple files with sed

for f in `ls`; do sed -i '/MATCHING STRING/ { s/ORIGINAL/REPLACEMENT/; }' ${f} ; done
Find and replace specific characters in a single line in multiple files with sed.
Sample Output
Original file
file1.txt:This is the MATCHING STRING and ORIGINAL some more text

Replaced file

file1.txt:This is the MATCHING STRING and REPLACEMENT some more text

By: krizzo
2015-05-21 19:37:42

What Others Think

First, I'd change the description to be more specific about the replacement. e.g. Use sed to do a search and replace only on lines matching "MATCHING STRING". . It's nice bit of sed, but the rest of the command lets you down. Parsing ls is seldom the right answer. Here you can just use globbing (shell expansion of wildcards): for f in *; do Also, filenames can contain whitespace, so it's best to quote the variables: ... "$f"; done So a better command is: for f in *; do sed -i '/MATCHING STRING/ { s/ORIGINAL/REPLACEMENT/; }' "$f" ; done
flatcap · 348 weeks and 3 days ago
Whitespace and directories with too many files will kill `ls`... instead use `find` to process all (or some) files in the present directory with `sed` as in your example, like this: find . -maxdepth 1 -mindepth 1 -type f -exec sed -i 'MATCHING STRING/ { s/ORIGINAL/REPLACEMENT/; } ' {} \;
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Killersmile · 42 weeks and 6 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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