Jump to content

Qshell

Edit links
From Wikipedia, the free encyclopedia
The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.
Qshell
Developer(s)IBM
Operating systemIBM i
PlatformIBM Power Systems
Standard(s)POSIX, X/Open
Available inEnglish
TypeCommand shell
WebsiteQshell

Qshell is an optional command-line interpreter (shell) for the IBM i operating system. Qshell is based on POSIX and X/Open standards. It is a Bourne-like shell that also includes features of KornShell.[1] The utilities (or commands) are external programs that provide additional functions. The development team of Qshell had to deal with platform-specific issues such as translating between ASCII and EBCDIC. The shell supports interactive mode as well as batch processing and can run shell scripts from Unix-like operating systems with few or no modifications.[1]

Commands

The following is a list of commands that are supported by the Qshell command-line interpreter on IBM i 7.4.[2]

Differences from other Unix shells

Qshell does not support the <> redirection operator or provide a command history. It also has no job control support as IBM i operating system does not have the concept of a foreground or background process group. The POSIX standard fg and bg built-in commands are therefore not available as well.[3]

Compared to PASE for i

According to IBM, QSHELL is a “Unix-like” interface built over IBM i. The commands issued by the user point to programs in a “Qshell” library. It began as a port from the ash shell, which was a Bourne-like shell created by Berkeley Software Design.[1]

See also

References

  1. ^ a b c Holt, Ted; Kulack, Fred (February 1, 2004). Qshell for iSeries. MC Press. ISBN 1-58347-046-8.
  2. ^ "List of all utilities". IBM.
  3. ^ "Differences with other interpreters". IBM.

Further reading

Retrieved from "https://en.wikipedia.org/w/index.php?title=Qshell&oldid=1217508803"