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- File test operators
- The test command includes the following FILE operators that allow you to test for particular types of files:
- -b FILE - True if the FILE exists and is a special block file.
- -c FILE - True if the FILE exists and is a special character file.
- -d FILE - True if the FILE exists and is a directory.
- -e FILE - True if the FILE exists and is a file, regardless of type (node, directory, socket, etc.).
- -f FILE - True if the FILE exists and is a regular file (not a directory or device).
- -G FILE - True if the FILE exists and has the same group as the user running the command.
- -h FILE - True if the FILE exists and is a symbolic link.
- -g FILE - True if the FILE exists and has set-group-id (sgid) flag set.
- -k FILE - True if the FILE exists and has a sticky bit flag set.
- -L FILE - True if the FILE exists and is a symbolic link.
- -O FILE - True if the FILE exists and is owned by the user running the command.
- -p FILE - True if the FILE exists and is a pipe.
- -r FILE - True if the FILE exists and is readable.
- -S FILE - True if the FILE exists and is a socket.
- -s FILE - True if the FILE exists and has nonzero size.
- -u FILE - True if the FILE exists, and set-user-id (suid) flag is set.
- -w FILE - True if the FILE exists and is writable.
- -x FILE - True if the FILE exists and is executable.
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