I would like to copy some files in a directory, renaming the files but conserving extension. Is this possible with a simple cp
, using regex ?
For example :
cp ^myfile\.(.*) mydir/newname.$1
So I could copy the file conserving the extension but renaming it. Is there a way to get matched elements in the cp
regex to use it in the command ? If not, I'll do a perl script I think, or if you have another way...
Thanks
Suppose you have myfile.a
, myfile.b
, myfile.c
:
for i in myfile.*; do echo mv "$i" "${i/myfile./newname.}"; done
This creates (upon removal of echo
) newname.a
, newname.b
, newname.c
.
The shell doesn't understand general regexes; you'll have to outsource to auxiliary programs for that. The classical scripty way to solve your task would be something like
for a in myfile.* ; do
b=`echo $a | sed 's!^myfile!mydir/newname!'`
cp $a $b
done
Or have a perl script generate a list of commands that you then source into the shell.
I really like the regex syntax of the rename
perl script (by Robin Barker and Larry Wall), eg:
rename "s/OldFile/NewFile/" OldFile*
OldFile.c
andOldFile.h
are renamed toNewFile.c
andNewFile.h
, respectively
I simply wanted the exact same thing with a copy command:
copy "s/OldFile/NewFile/" OldFile*
So I duplicated that script and changed the rename statement to copy via File::Copy
. Et voila! A copy command with perl-regex syntax:
https://gist.github.com/jcward/0ead33bd79f2061c68728cc82582241f
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