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The Bourne shell (sh) is a shell command-line interpreter for computer operating systems.It first appeared on Version 7 Unix, as its default shell. Unix-like systems continue to have /bin/sh—which will be the Bourne shell, or a symbolic link or hard link to a compatible shell—even when other shells are used by most users.
It is possible to use it to manipulate and create your own seismograms, and also to convert them between the SU standard file and the industry standard, the SEG Y. Here you can find a list of the programs that the SU package has, with a brief description and a link to its help page.
Bash can execute the vast majority of Bourne shell scripts without modification, with the exception of Bourne shell scripts stumbling into fringe syntax behavior interpreted differently in Bash or attempting to run a system command matching a newer Bash builtin, etc. Bash command syntax includes ideas drawn from the Korn Shell (ksh) and the C ...
Bear in mind that this is an encyclopedic article about the Bourne shell and not a Bourne shell tutorial or technical reference as per WP:NOTHOWTO. This article is certainly not perfect but it puts the shell in historical context and describes new features and language constructs with this shell.
The Z shell (Zsh) is a Unix shell that can be used as an interactive login shell and as a command interpreter for shell scripting. Zsh is an extended Bourne shell with many improvements, including some features of Bash, ksh, and tcsh. Zsh was created by Paul Falstad in 1990 while he was a student at Princeton University.
In computing, command substitution is a facility that allows a command to be run and its output to be pasted back on the command line as arguments to another command. . Command substitution first appeared in the Bourne shell, [1] introduced with Version 7 Unix in 1979, and has remained a characteristic of all later Uni
Almquist shell (also known as A Shell, ash and sh) is a lightweight Unix shell originally written by Kenneth Almquist in the late 1980s. Initially a clone of the System V.4 variant of the Bourne shell , it replaced the original Bourne shell in the BSD versions of Unix released in the early 1990s.
The type command was a shell builtin for Bourne shell that was introduced in AT&T's System V Release 2 (SVR2) in 1984, [1] and continues to be included in many other POSIX-compatible shells such as Bash. However, type is not part of the POSIX standard. With a POSIX shell, similar behavior is retrieved with command -V name