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Function that swaps the filenames of two given files.

Terminal - Function that swaps the filenames of two given files.
flipf(){ if [ -f "$1" -a -f "$2" ]; then mv "$1" "$1.$$" && mv "$2" "$1" && mv "$1.$$" "$2" || echo "$!"; else echo "Missing a file: $!"; fi; }
2010-12-16 10:38:28
User: Void42
Functions: echo mv
-1
Function that swaps the filenames of two given files.

(Changed to "bartonskis" suggestion.)

Alternatives

There are 5 alternatives - vote for the best!

Terminal - Alternatives

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What others think

does not account for spaces etc in filenames or if one command fails (use && instead)

Comment by bashrc 311 weeks and 5 days ago

Ok, changed it. Now it works with spaces in filenames and checks if files exist.

Comment by Void42 311 weeks and 5 days ago

I think that you can leave out '&& echo "Success"'... we expect not to see anything if it works. The warning message could be more descriptive, and should include "$!"

I think that I would write this as

flipf(){ if [ -f "$1" -a -f "$2" ]; then mv "$1" "$1.$$" && mv "$2" "$1" && mv "$1.$$" "$2" || echo "$!"; else echo "Missing a file: $!"; fi; }
Comment by bartonski 311 weeks and 4 days ago

Why do people use echo "Success"? It's annoying and no production script ever uses it. How do people learn it, and where does it come from?

Comment by kaedenn 311 weeks and 4 days ago

Your point of view

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