How to go to each directory and execute a command?
If you're using GNU find
, you can try -execdir
parameter, e.g.:
find . -type d -execdir realpath "{}" ';'
or (as per @gniourf_gniourf comment):
find . -type d -execdir sh -c 'printf "%s/%s\n" "$PWD" "$0"' {} \;
Note: You can use ${0#./}
instead of $0
to fix ./
in the front.
or more practical example:
find . -name .git -type d -execdir git pull -v ';'
If you want to include the current directory, it's even simpler by using -exec
:
find . -type d -exec sh -c 'cd -P -- "{}" && pwd -P' \;
or using xargs
:
find . -type d -print0 | xargs -0 -L1 sh -c 'cd "$0" && pwd && echo Do stuff'
Or similar example suggested by @gniourf_gniourf:
find . -type d -print0 | while IFS= read -r -d '' file; do
# ...
done
The above examples support directories with spaces in their name.
Or by assigning into bash array:
dirs=($(find . -type d))
for dir in "${dirs[@]}"; do
cd "$dir"
echo $PWD
done
Change .
to your specific folder name. If you don't need to run recursively, you can use: dirs=(*)
instead. The above example doesn't support directories with spaces in the name.
So as @gniourf_gniourf suggested, the only proper way to put the output of find in an array without using an explicit loop will be available in Bash 4.4 with:
mapfile -t -d '' dirs < <(find . -type d -print0)
Or not a recommended way (which involves parsing of ls
):
ls -d */ | awk '{print $NF}' | xargs -n1 sh -c 'cd $0 && pwd && echo Do stuff'
The above example would ignore the current dir (as requested by OP), but it'll break on names with the spaces.
See also:
- Bash: for each directory at SO
- How to enter every directory in current path and execute script? at SE Ubuntu
This answer posted by Todd helped me.
find . -maxdepth 1 -type d \( ! -name . \) -exec bash -c "cd '{}' && pwd" \;
The \( ! -name . \)
avoids executing the command in current directory.
You can do the following, when your current directory is parent_directory
:
for d in [0-9][0-9][0-9]
do
( cd "$d" && your-command-here )
done
The (
and )
create a subshell, so the current directory isn't changed in the main script.
You can achieve this by piping and then using xargs
. The catch is you need to use the -I
flag which will replace the substring in your bash command with the substring passed by each of the xargs
.
ls -d */ | xargs -I {} bash -c "cd '{}' && pwd"
You may want to replace pwd
with whatever command you want to execute in each directory.