Script programmed for bash, a type of Unix shell (Bourne-Again SHell); contains instructions written in the Bash language; can be executed by typing text commands within the shell's command-line interface.

Important: SH files may also be to store scripts for other shell programs such as Bourne Shell, C-Shell, and Korn Shell. Apple Terminal is a Bash shell.

Self-extracting "shar" archive that contains files and a shell script with instructions on how to extract the contents; created with the Unix shar utility program; typically only usable on Unix computers with the Bourne shell installed.

Shar files also use the .SHAR file extension.