Brackets or square brackets, used in various commands and scripts.
Braces or curly braces, used in various commands and scripts.
Shell environment variable that points to your logon home directory.
The shell environment variable that contains a set of directories to be searched for UNIX commands.
Bitmap graphics file.
File compressed using the bzip2 utility, which usually offers better compression than gzip.
C source file.
GIF graphics file.
File compressed using the GNU gzip utility, which usually offers better compression than the compress command.
C header file.
Compiled object file.
Gzipped tar file.
TIFF graphics ...