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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. 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. Commands The following is a list of commands that are supported by the Qshell command-line interpreter on IBM i 7.4. 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 and built-in commands are therefore not ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IBM I
IBM i (the ''i'' standing for ''integrated'') is an operating system developed by IBM for IBM Power Systems. It was originally released in 1988 as OS/400, as the sole operating system of the IBM AS/400 line of systems. It was renamed to i5/OS in 2004, before being renamed a second time to IBM i in 2008. It is an evolution of the IBM System/38, System/38 Control Program Facility, CPF operating system, with compatibility layers for IBM System/36, System/36 System Support Program, SSP and IBM AIX, AIX applications. It inherits a number of distinctive features from the System/38 platform, including the System/38#Machine Interface, Machine Interface which provides hardware independence, the implementation of object-based addressing on top of a single-level store, and the tight integration of a relational database into the operating system. History Origin OS/400 was developed alongside the AS/400 hardware platform beginning in December 1985. Development began in the aftermath of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Attr
In computing, ATTRIB is a command in Intel ISIS-II, DOS, IBM OS/2, Microsoft Windows and ReactOS that allows the user to change various characteristics, or "attributes" of a computer file or directory. The command is also available in the EFI shell. History Several operating systems provided a set of modifiable file characteristics that could be accessed and changed through a low-level system call. For example, as of release MS-DOS 4.0, the first six bits of the file attribute byte indicated whether or not a file was read-only (as opposed to writeable), hidden, a system file, a volume label, a subdirectory, or if the file had been "archived" (with the bit being set if the file had changed since the last use of the BACKUP command). However, initial releases of the operating system did not provide user-level method for reading or changing these values. The initial version of the ATTRIB command for DOS was first included in version 3.0 of PC DOS, with functionality limited to cha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
