Qshell Interpreter (qsh) - FTP Directory Listing - IBM

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CCSIDs supported by qsh 00273 00273 Germany, Austria 00277 00277 Denmark, Norway 00278 00278 Finland, Sweden 00280 00280 Italy 00284 00284 Spain, Latin America 00285 00285 United Kingdom 00297 00297 France 00424 00424 Israel (Hebrew) 00500 00500 Belgium, Canada, Switzerland 00833 00833 Korea Extended 00836 00836 Simplified Chinese Extended 00838 00838 Thailand Extended 00870 00870 Latin-2 Multilingual 00871 00871 Iceland 00875 00875 Greece 00880 00880 Cyrillic Multilingual 00918 00918 Pakistan 00933 00833, 00834 Korea Extended 00935 00836, 00837 Simplified Chinese Extended 00937 00037, 00835 Traditional Chinese Extended 00939 01027, 00300 Japan English Extended 01025 01025 Cyrillic Multilingual 01027 01027 Japan Latin Extended 01112 01112 Baltic Multilingual 01122 01122 Estonian 01123 01123 Cyrllic Ukraine 01130 01130 Vietnamese 01132 01132 Lao 01140 01140 USA, Canada euro 01141 01141 Germany, Austria euro 01142 01142 Denmark, Norway euro 01143 01143 Finland, Sweden euro 01144 01144 Italy euro 01145 01145 Spain, Latin America euro 01146 01146 United Kingdom euro 01147 01147 France euro 01148 01148 Belgium, Canada, Switzerland euro 01149 01149 Iceland euro 01388 00836, 00837 Simplified Chinese Host Data 05035 01027, 00300 Japan English Extended 09030 00838 Thailand Extended SBCS 13124 00836 Simplified Chinese Host Data 28709 00037 Traditional Chinese Extended [ Legal | AS/400 Glossary ] Performance considerations 8 Qshell Interpreter (qsh) To improve the performance of qsh, you can: v Enable prestart jobs in the subsystem where qsh is running. When qsh starts a new process, it will use a prestart job if it is available and the variable QSH_USE_PRESTART_JOBS=Y. You can enable prestart jobs in the QINTER subsytem using this CL command:
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
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Description Options 60 Qshell Inter
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Environment Variables Exit Status R
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Options Exit Status Related Informa
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Related Information v cd - Change w
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Exit Status Examples v 0 on success
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Related Information print - Write o
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Options Operands Exit status None.
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Description Actions Options 78 Qshe
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Exit Status Examples Notes 80 Qshel
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For more information about the java
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jar - Archive Java files Ignored op
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Description Options Operands Exit s
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kill - Terminate or signal processe
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Exit status Examples v 0 when succe
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wait - Wait for process completion
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Description Options Operands Exit s
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Options Operands Exit status Relate
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unset - Unset values of variables a
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Exit status v 0 when successful. [
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Description Operands Exit Status Ex
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true - Return true value Synopsis D
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Exit Status Examples 106 Qshell Int
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expr 10 = 10 [ Legal | AS/400 Gloss
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Exit Status Examples -t Mark every
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Exit Status 112 Qshell Interpreter
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Error Conditions Related Informatio
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Authorities Return Value Error Cond
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USER(QSHSVR) AUT(*USE) GRTOBJAUT OB
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