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small one-line loop, change for different taste :P

Terminal - small one-line loop, change for different taste :P
for FILE in $(ls); do [COMMAND]; done
2009-02-17 14:42:46
User: stinger
small one-line loop, change for different taste :P

# Small for loop, that can list files in dir, and after that executes

# [COMMAND] of your choice, usefull for example rename, move, tar etc..

# change cmd's for different results :)


There are 3 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

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What others think

can be easier (as written) or much more powerful. Yours, as written can be accomplished as...

for FILE in *;do echo $FILE;done

Also, can be made much more selective by doing something like...

for FILE in `ls | grep -v badstufff | awk '{print $2}'|`;do [command] $FILE;done

Comment by unixmonkey1114 346 weeks and 2 days ago

unixmonkey1114: I actually like to do the $(ls) too, especially so I can ls in another directory.

For your second proposal, I tend to use "while" rather than "for", like :

ls | grep -v badstuff | awk '{print $2}' | while read line; do [command] $line; done

which I find clearer somehow.

Comment by raphink 346 weeks and 2 days ago

Note: "while" and "for" are not equivalent in my last comment though. "for" takes spaces aswell as newlines as separator, whereas "while" only takes newlines, so it can be useful for multi-line values.

Comment by raphink 346 weeks and 2 days ago

I often do:

for FILE in ...; do echo [COMMAND]; done

and then, if satisfied with the commands printed, I repeat the for command without echo

Comment by dz 346 weeks and 2 days ago

Your point of view

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