How do I perform a file search in linux based on file permissions?

hawksbill

Also see:
Man page for find.
To understand permissions, see Wikipedia on chmod

This could be a long list, terminate the output using Ctrl-C

- means all the bit sets are required for the match.

Assuming just the current directory for the find.

Find files writable by others.

$ find -perm -002
./filex
./filea

Find files readable by everyone.

$ find -perm -444
.
./.filed
./filex
./filea
./.filec
./test
./test/perf
./fileb

Find files not readable by everyone.

$ find ! -perm -444
./int

Handy to list the files sometime along with the -perms option.

$ find ! -perm -444 -ls
   237412      1 -rw-------   1 trainer  trainer         0 Nov 14 11:45 ./int

An exact permission file search.

$ find -perm 600 -ls
   237412      1 -rw-------   1 trainer  trainer         0 Nov 14 11:45 ./int