Qshell

Last updated
Qshell
Developer(s) IBM
Operating system IBM i
Platform IBM Power Systems
Standard(s) POSIX, X/Open
Available inEnglish
Type Command shell
Website Qshell

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]

Contents

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. 1 2 3 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