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number files in directory according to their modification time

Terminal - number files in directory according to their modification time
IFS=$'\n'; i=1; ls -lt *mp3 | cut -d ":" -f2 | cut -d " " -f2- | while read f; do mv "$f" $(echo "$i"."$f"); ((i++)); done
2011-01-22 00:21:12
User: m1cawber
Functions: cut echo ls mv read
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number files in directory according to their modification time

i use this after ripping internet radio streams to number the files as they originally played (even though streamripper can do this with -q).

to number other types of files, or all files, just change the *mp3. to rename directories only you could use

... ls -lt | grep ^d | cut -d ":" -f2 | cut -d " " -f2- | while read ...

Show sample output | Add to favourites | Report as malicious

Alternatives

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Terminal - Alternatives

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What others think

Parsing ''ls'' output is a bad idea (http://mywiki.wooledge.org/ParsingLs), therefore by using globs instead you can avoid using the IFS variable and the ''cut'' command.

Try using globs ;)

Comment by RanyAlbeg 125 weeks and 2 days ago

For most people's usage, you can simplify your command. Get rid of the -l and replace it with -1 (dash one) to put each filename on a separate line.

i=1; ls -1t *mp3 | while read f; do mv "$f" $(echo "$i"."$f"); ((i++)); done
Comment by flatcap 125 weeks and 2 days ago

RanyAlbeg thanks for the link, good information there. and flatcap thx for cutting cut =p. ls -1 is new to me.

Comment by m1cawber 125 weeks and 2 days ago

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