On Fri, May 31, 2002 at 10:54:16AM -0400, Daniel D Jones wrote: > How does one handle multiple files via most command line utilities? For > example, suppose you have a handful of perl scripts (*.pl) and you want > to save them in the same directory with a different extension. The > command > > cp *.pl *.bak comp.unix.shell FAQ, I think. for f in *.pl; do cp $f `basename $f`.bak; done > Or suppose you have a series of perl scripts which are saved in DOS > line-end format. The extra ^M on the bang line causes bash not to > recognize the path to perl, and the script to fail. Sounds like a job > for sed. > > sed s/^M// *.pl > *.unix again, for f in *.pl; do sed -e s/^M// $f > `basename $f`.bak; done but in this case you can tell perl to work on all the files at once, which is neater: perl -i~ -pe 's/\r//' *.pl which will update the *.pl files, leaving backups in *.pl~ > Again, the file naming criteria doesn't work. I could write a script > which essentially generates a new command for each file fitting the technically, that's what the above do, but it's not really very complicated once you're used to the shell. (the key to using *.foo on command lines is to remember that the shell expands it before handing the list to the program.) SRH -- Steve Haslam http://www.arise.demon.co.uk/ araqnid@innocent.com Debian GNU/Linux Maintainer araqnid@debian.org but I won't admit to needing you I'll never say that's true, not to you [sister machine gun]
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