Qshell Interpreter (qsh) - FTP Directory Listing - IBM

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unset - Unset values of variables and functions Synopsis Description Options Operands Exit status Related information Examples unset [ -fv] [name ... ] You can use unset to unset each variable or function specified by name. If no option is specified, name refers to a variable. Variables with the read-only attribute cannot be unset. v -f name refers to a function. v -v name refers to a variable. Each name is a variable or function. v 0 when successful. v >0 when at least one name could not be found. The value is the number of name(s) that are not found. v “export - Set export attribute for variables” v “local - Assign a local variable in a function” v “readonly - Set read-only attribute for variables” v “set - Set or unset options and positional parameters” 1. Unset the variable alpha: unset alpha 2. Unset the function foo: unset -f foo [ Legal | AS/400 Glossary ] Utilities for writing scripts 98 Qshell Interpreter (qsh) The following are Qshell utilities for writing scripts: v break - Exit from for, while, or until loop v colon (:) - Null utility v continue - Continue for, while, or until loop v false - Return false value v getopts - Parse utility options v let - Evaluate arithmetic expression v test - Evaluate expression v true - Return true value
[ Legal | AS/400 Glossary ] break - Exit from for, while, or until loop Synopsis Description Options Operands Exit status break[ n ] You can use break to exit from the smallest enclosing for, while, or until loop or from the nth enclosing loop. Processing resumes with the command immediately following the loop. None. Related information colon (:) - Null utility Synopsis Description Options Operands The value of n must be greater than or equal to 1. v 0 when successful. v “continue - Continue for, while, or until loop” [ Legal | AS/400 Glossary ] :[ argument ... ] You can use colon where you must have a command, but you do not want the command to do anything. For example, in the then condition of an if command. None. Each argument is expanded. Chapter 4. Utilities 99
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Function key Description F7 (Up) Ro
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CCSIDs supported by qsh 00273 00273
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10 Qshell Interpreter (qsh) - The f
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Parameters Positional parameters Sp
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Variables used by qsh 14 Qshell Int
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Word expansions Tilde expansion Par
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$(command) or by using backquotes:
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20 Qshell Interpreter (qsh) Arithme
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Here-documents Using commands [ n ]
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Lists Asynchronous lists Sequential
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28 Qshell Interpreter (qsh) [ Legal
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Utilities for defining aliases The
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command - Run a simple command Syno
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Options Operands Exit Status - Invo
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Options Operands Exit status None.
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Operands Exit Status Related inform
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Related Information Examples [] Mat
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Operands Exit Status Related Inform
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Exit Status Related Information Exa
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Exit status Related information qsh
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Page 98 and 99: For more information about the java
Page 100 and 101: jar - Archive Java files Ignored op
Page 102 and 103: Description Options Operands Exit s
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Page 108 and 109: wait - Wait for process completion
Page 110 and 111: Description Options Operands Exit s
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Page 124 and 125: expr 10 = 10 [ Legal | AS/400 Gloss
Page 126 and 127: Exit Status Examples -t Mark every
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Page 144 and 145: 128 Qshell Interpreter (qsh) int c;
Page 146 and 147: 130 Qshell Interpreter (qsh) } /* G
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