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Multiple Move & Co. //at 00:08 //by abe

from the variations dept.

nion’s blog made me notice that many people don’t know mmv (multiple move), which approximately works like this:

mmv '*.htm' #1.html
mmv '*.foo.*' #1.#2.bla

Additionally, mmv also can copy, link or even append files when called as mcp, mln or mad respectively with the appropriate command line options.

When I told nion in IRC on about mmv, HE pointed me to the Perl script /usr/bin/rename, which is in Debian’s perl package and therefore installed on nearly every Debian system by default. It moves files by applying perl subsitutions to file names:

rename 's/\.htm$/.html/' *.htm
rename 'y/A-Z/a-z/' *

Being curious, if the newly found tool is not only available in Debian, I looked on a SuSE 9.0 box and indeed, I also found there a /usr/bin/rename. But — surprise, surprise — it’s not a Perl script but an ELF binary. And although it does similar things than mmv and Debian’s rename, it is the simplest of the three commands:

rename .htm .html *.htm
rename foo foo00 foo?
rename foo foo0 foo??

Note to my self: Nice add-on for your command line efficiency talk.


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This is the blog or weblog of Axel Stefan Beckert (aka abe or XTaran) who thought, he would never start blogging... (He also once thought, that there is no reason to switch to this new ugly Netscape thing because Mosaïc works fine. That was about 1996.) Well, times change...

He was born 1975 at Villingen-Schwenningen, made his Abitur at Schwäbisch Hall, studied Computer Science with minor Biology at University of Saarland at Saarbrücken (Germany) and now lives in Zürich (Switzerland), working at the Network Security Group (NSG) of the Central IT Services (Informatikdienste) at ETH Zurich.

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