Editing Bourne shell (section)

===Almquist shells===
{{Main|Almquist shell}}
Due to copyright issues surrounding the Bourne Shell as it was used in historic [[Computer Systems Research Group|CSRG]] BSD releases, Kenneth Almquist developed a clone of the Bourne Shell, known by some as the Almquist shell and available under the [[BSD licenses|BSD license]], which is in use today on some BSD descendants and in low-memory situations. The Almquist Shell was ported to Linux, and the port renamed the [[Almquist shell#Dash|Debian Almquist shell]], or dash. This shell provides faster execution of standard <code>sh</code> (and POSIX-standard <code>sh</code>, in modern descendants) scripts with a smaller [[memory footprint]] than its counterpart, Bash. Its use tends to expose [[Bash (Unix shell)#Portability|bashisms]] – bash-centric assumptions made in scripts meant to run on sh.