Shell Programming and Scripting

This Works !! But, can you tell me how can i add an echo to print the files that got modified ? I can't put the echo after the sed as it logs the same file name multiple times incase the string to be replaced if found in the file multiple times.

So, can you tell me how can i add an echo to print the files that got modified ?

You can print the file name after the sed command!
Nore that each file that is found by the "find" causes one loop cycle i.e. is processed once.

That depends on the size of the directories being processed by find, the find file selection criteria, the underlying filesystem type, and the way that updated files are copied or moved back to the original files.

With:

Code:

find . -type f | while read -r path
do	process "$path" > "$path.tmp"
	[ $? -eq 0 ] && mv "$path.tmp" "$path"
done

it is theoretically possible for process to be asked to process a given filename more than once and to also be asked to process whatever that filename was with .tmp appended (possibly also more than once).

However, with:

Code:

find . -type f ! -name '*.tmp' | while read -r path
do	process "$path" > "$path.tmp"
	[ $? -eq 0 ] && cp "$path.tmp" "$path"
	rm -rf "$path.tmp"
done

you are correct. A given filename should only be processed once (and the temp files will never be passed to process).