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--- bash:execute_a_command_in_every_directory [2020/02/13 22:47] – peter
+++ bash:execute_a_command_in_every_directory [2021/01/26 14:26] (current) – removed peter
@@ Line 1: / Line 1: @@
-====== BASH - Execute a command in every directory ======
-<code bash>
-for d in [0-9][0-9][0-9]
-do
-  ( cd "$d" && your-command-here )
-done
-</code>
-----
-<code bash>
-find . -maxdepth 1 -type d \( ! -name . \) -exec bash -c "cd '{}' && pwd" \;
-</code>
-----
-<code bash>
-find ~/Music/ -type d \( ! -name . \) -exec bash -c "cd \"{}\" && fdupes -dN . " \;
-</code>
-----
-If you're using GNU find, you can try -execdir parameter, e.g.:
-<code bash>
-find . -type d -execdir realpath "{}" ';'
-</code>
-or
-<code bash>
-find . -type d -execdir sh -c 'printf "%s/%s\n" "$PWD" "$0"' {} \;
-</code>
-Note: You can use ${0#./} instead of $0 to fix ./ in the front.
-or more practical example:
-<code bash>
-find . -name .git -type d -execdir git pull -v ';'
-</code>
-If you want to include the current directory, it's even simpler by using -exec:
-<code bash>
-find . -type d -exec sh -c 'cd -P -- "{}" && pwd -P' \;
-</code>
-or using xargs:
-<code bash>
-find . -type d -print0 | xargs -0 -L1 sh -c 'cd "$0" && pwd && echo Do stuff'
-</code>
-Or
-<code bash>
-find . -type d -print0 | while IFS= read -r -d '' file; do
-# ...
-done
-</code>
-The above examples support directories with spaces in their name.
-Or by assigning into bash array:
-<code bash>
-dirs=($(find . -type d))
-for dir in "${dirs[@]}"; do
-  cd "$dir"
-  echo $PWD
-done
-</code>
-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.
-----
-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:
-<code bash>
-mapfile -t -d '' dirs < <(find . -type d -print0)
-</code>
-Or not a recommended way (which involves parsing of ls):
-<code bash>
-ls -d */ | awk '{print $NF}' | xargs -n1 sh -c 'cd $0 && pwd && echo Do stuff'
-</code>