linux - How can I restrict a bash find to only specific sub-sub-directories
2014-07
I'm trying to list all the files in a specific sub-directory but different directories which are themselves on a different volume.
The following works, but only on a fully specific sub-directory (and I've got hundreds of them):
find "/Volumes/Products/Specific Product Directory/Work Instructions" -print
What I haven't been able to figure out is how to search across varied sub-directories. So, for example, using the wild character * in place of each specific product directory:
find "/Volumes/Products/*/Work Instructions" -print
// Does not work.
The *
is only interpreted by the shell when not quoted.
find "/Volumes/Products/"*"/Work Instructions" -print
find /Volumes/Products/*/Work\ Instructions -print
How would I go about finding all the folders in a directory than contain less than x number of .flac
files?
For every subdirectory, print the subdirectory name if there are at most 42
.flac
files in the subdirectory. To execute a command on the directories, replace-print
by-exec … \;
. POSIX compliant.find . -type d -exec sh -c 'set -- "$0"/*.flac; [ $# -le 42 ]' {} \; -print
Note that this command won't work to search for directories containing zero
.flac
files ("$0/*.flac"
expands to at least one word). Instead, usefind . -type d -exec sh -c 'set -- "$0"/*.flac; ! [ -e "$1" ]' {} \; -print
Same algorithm in zsh.
**/*
expands to all the files in the current directory and its subdirectories recursively.**/*(/)
restricts the expansion to directories.{.,**/*}(/)
adds the current directory. Finally,(e:…:)
restricts the expansion to the matches for which the shell code returns 0.echo {.,**/*}(/e:'set -- $REPLY/*.flac(N); ((# <= 42))':)
This can be broken down in two steps for legibility.
few_flacs () { set -- $REPLY/*.flac(N); ((# <= 42)); } echo {.,**/*}(/+few_flacs)
Changelog:
• handle x=0 correctly.
Replace $MAX
with your own limit:
find -name '*.flac' -printf '%h\n' | sort | uniq -c | while read -r n d ; do [ $n -lt $MAX ] && printf '%s\n' "$d" ; done
Note: This will print all the subdirectories with a number of .flac
files between 0
and $MAX
(both excluded).