[Shell Scripts] some shell scripts #shellscripts

extract_in_subdirecories.sh

# there are many subdirectories, and each file has a .tgz file in it.

# run this to check path, test first
for d in ./*/
do (cd $d && echo $PWD)                                                     
done

# run this to extrat files to its directory.
for d in ./*/
do (cd $d && find . -name '*.tgz' -not -name '.*' -exec tar xvzf {} -C $PWD \;)
done

find_and_edit_each_file.sh

# there are many [name].py and ._[name].py files in a directory
# first use find to find only the [name].py files
# then use sed to change the first line, and also make a backup
find -name "*.py" -not -name ".*" -exec sed -i.bak "1 s/^.*$/#! \/usr\/bin\/python2/" {} \;