Tuesday, May 15, 2007
Take .bak of all files and way to revert back to original name
We will first list all the .cc extn files starting from current dir.
$ find . -name "*.cc" -type f
./as.cc
./dire/cd.cc
./bs.cc
Task1: Take a .bak of all your .cc files
$ find . -name "*.cc" -type f -exec cp {} {}.bak \;
So back-up is been taken
$ find . -name "*.cc.bak" -type f
./dire/cd.cc.bak
./as.cc.bak
./bs.cc.bak
Good!
Task 2: Now the requirement is different. Rename all the .bak s to their original name,
$ find . -name "*.cc.bak" -type f -exec rename 's/\.bak$//' {} \;
Is it really done ? check
$ find . -name "*.cc" -type f
./as.cc
./bs.cc
./dire/cd.cc
YES.
One more way , but this is expensive(will take more time,if the input list is huge),
$ find . -name "*.cc.bak" -type f | while read file
> do
> mv $file `echo $file | sed 's/.bak$//g'`
> done
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