| FLAG | MEANING |
|---|---|
| -e | file exists |
| -a | file exists (deprecated, don't use) |
| -f | file is a regular file (not a directory or /dev - device file) |
| -s | file is not zero size |
| -d | file is a directory |
| -b | file is a block device (see below) |
| -c | file is a character device (see below) |
| -p | file is a pipe |
| -h | file is a symbolic link |
| -L | file is a symbolic link |
| -S | file is a socket |
| -t | file (descriptor) is associated with a terminal device This test option may be used to check whether the stdin [ -t 0 ] or stdout [ -t 1 ] in a given script is a terminal. |
| -r | file has read permission (for the user running the test) |
| -w | file has write permission (for the user running the test) |
| -x | file has execute permission (for the user running the test) |
| -g | set-group-id (sgid) flag set on file or directory If a directory has the sgid flag set, then a file created within that directory belongs to the group that owns the directory, not necessarily to the group of the user who created the file. This may be useful for a directory shared by a workgroup. |
| -u | setuser-id (suid) flag set on file |
| -k | sticky bit set |
| -O | you are owner of file |
| -G | group-id of file same as yours |
| -N | file modified since it was last read |
| f1 -nt f2 | file f1 is newer than f2 |
| f1 -ot f2 | file f1 is older than f2 |
| f1 -ef f2 | files f1 and f2 are hard links to the same file |
| ! | "not" -- reverses the sense of the tests above (returns true if condition absent). |
Created
February 10, 2023 07:57
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Reference for Bash File Test Operators
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