Qshell Interpreter (qsh) - FTP Directory Listing - IBM

ADDPJE SBSD(QSYS/QINTER) PGM(QSYS/QP0ZSPWP)
INLJOBS(20) THRESHOLD(5) ADLJOBS(5)
JOBD(QGPL/QDFTJOBD) MAXUSE(1) CLS(QGPL/QINTER)
v Leave the SHELL variable unset. If a script file does not contain a “#!” on the
first line, the script is run in the current activation of qsh.
v Set the NLSPATH variable. If you are using English as your language, set the
variable in the environment file using this command:
export NLSPATH='/QIBM/ProdData/OS400/Shell/MRI2924/%N'
You must change the MRI directory in the previous command if you are using a
different language.
v Do not use command substitutions in the value of the PS1 variable. This causes
a new process to be started every time you press the key.
v Use built-in utilities whenever possible because they are run in the current
process.
v Use input redirection instead of cat. For example, the following command:
cat myfile | grep Hello
can be replaced with this command:
grep Hello < myfile
v Make sure script files are in same code page as the code page associated with
the CCSID of the job running qsh.
[ Legal | AS/400 Glossary ]
Developing your own utilities
You can develop your own utility programs using ILE C/400. You should use
Integrated File System I/O and specify the SYSIFCOPT(*IFSIO) parameter when
creating all of the modules in your utility program using the CRTCMOD or
CRTBNDC CL commands.
If your utility program uses the ILE C/400 functions for standard I/O, you can run
your utility from either the qsh command line or the QCMD command line. If your
utility reads and writes directly from descriptors 0, 1, and 2, you can only run your
utility from the qsh command line.
[ Legal | AS/400 Glossary ]
Differences between Qshell and other interpreters
While qsh is compatible with standard shell interpreters on other platforms, there
are several differences:
v There is no support for the redirection operator.
v There is no support for a command history list, the HISTSIZE and HISTFILE
variables, and the fc (or hist) built-in utility. As an alternative, the QSH CL
command has support for command retrieval.
v There is no support for command line editing and the EDITOR variable.
v There is no support for the MAIL, MAILCHECK, and MAILPATH variables.
v There is no support for job control. There is no concept of a foreground or
background process group on AS/400. This means it is possible for multiple jobs
to be reading from the terminal at the same time. qsh does not support:
Chapter 2. Using qsh 9