Qshell Interpreter (qsh) - FTP Directory Listing - IBM
Qshell Interpreter (qsh) - FTP Directory Listing - IBM
Qshell Interpreter (qsh) - FTP Directory Listing - IBM
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unset - Unset values of variables and functions<br />
Synopsis<br />
Description<br />
Options<br />
Operands<br />
Exit status<br />
Related information<br />
Examples<br />
unset [ -fv] [name ... ]<br />
You can use unset to unset each variable or function specified by name. If no<br />
option is specified, name refers to a variable. Variables with the read-only attribute<br />
cannot be unset.<br />
v -f name refers to a function.<br />
v -v name refers to a variable.<br />
Each name is a variable or function.<br />
v 0 when successful.<br />
v >0 when at least one name could not be found. The value is the number of<br />
name(s) that are not found.<br />
v “export - Set export attribute for variables”<br />
v “local - Assign a local variable in a function”<br />
v “readonly - Set read-only attribute for variables”<br />
v “set - Set or unset options and positional parameters”<br />
1. Unset the variable alpha: unset alpha<br />
2. Unset the function foo: unset -f foo<br />
[ Legal | AS/400 Glossary ]<br />
Utilities for writing scripts<br />
98 <strong>Qshell</strong> <strong>Interpreter</strong> (<strong>qsh</strong>)<br />
The following are <strong>Qshell</strong> utilities for writing scripts:<br />
v break - Exit from for, while, or until loop<br />
v colon (:) - Null utility<br />
v continue - Continue for, while, or until loop<br />
v false - Return false value<br />
v getopts - Parse utility options<br />
v let - Evaluate arithmetic expression<br />
v test - Evaluate expression<br />
v true - Return true value
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