Qshell Interpreter (qsh) - FTP Directory Listing - IBM

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Description Operands Exit Status Examples You can use let to evaluate each arg as an arithmetic expression (page 19). You may need to quote each arg since many arithmetic operators have a special meaning to qsh. Each arg is evaluated as an arithmetic expression (page 19). v 0 when the value of the last expression is non-zero v 1 when the value of the last expression is zero 1. Add one to the variable x. let x=x+1 [ Legal | AS/400 Glossary ] test - Evaluate expression Synopsis Description 102 Qshell Interpreter (qsh) test expression [ expression ] You can use test to check the type of a file, check permissions on files, compare two strings, or compare two arithmetic expressions. You can construct expressions using the following primaries: v -b file True if file exists and is a block special file. v -c file True if file exists and is a character special file. v -d file True if file exists and is a directory. v -e file True if file exists regardless of type. v -f file True if file exists and is a regular file. v -g file True if file exists and its set group id flag is set. v -h file True if file exists and is a symbolic link. v -k file True if file exists and its sticky bit is set. v -L file True if file exists and is a symbolic link. v -n string True if the length of string is non-zero. v -N file True if file exists and is a native object. v -p file True if file exists and is a pipe.
Options Operands Exit status Examples v -r file True if file exists and is readable. v -s file True if file exists and has a size greater than zero. v -S file True if file exists and is a socket. v -t fd True if file descriptor fd is open and associated with a terminal. v -u file True if file exists and its set user id flag is set. v -w file True if file exists and is writable. v -x file True if file exists and is executable. This only means that the execute bit is on. If file is a directory, the directory can be searched. v -z string True if the length of string is zero. v n1 -eq n2 True if the integers are equal. v n1 -ne n2 True if the integers are not equal. v n1 -gt n2 True if the first integer is greater than the second integer. v n1 -ge n2 True if the first integer is greater than or equal to the second integer. v n1 -ltn2 True if the first integer is less than the second integer. v n1 -le n2 True if the first integer is less than or equal to the second integer. v string True if string is not the null string. v string1 = string2 True if the strings are identical. v string1 != string2 True if the strings are not identical. The above primaries can be combined to form complex expressions using the following operators: v ! expr True if expr is false. v expr1 -a expr2 True if both expressions are true. v expr1 & expr2 True if both expressions are true. v expr1 -o expr2 True if either expression is true. v expr1 | expr2 True if either expression is true. v (expr) Parentheses are for grouping. The -a and & operators have higher precedence than the -o and | operators. See above. All operators and flags are separate arguments. v 0 when expression is true. v 1 when expression is false. v >1 when there is an error. 1. See if /home is a directory: test -d /home 2. See if one integer is less than or equal to another: test“$index” -le “$count” 3. See if two strings are equal: test“$REPLY” = “Yes” Chapter 4. Utilities 103
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Qshell Interpreter (qsh)
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© Copyright International Business
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iv Qshell Interpreter (qsh) if cond
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Function key Description F7 (Up) Ro
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CCSIDs supported by qsh 00273 00273
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Parameters Positional parameters Sp
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Variables used by qsh 14 Qshell Int
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Word expansions Tilde expansion Par
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$(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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then list4 ] ... [ else list5 ] cas
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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 None.
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Operands Exit Status Related inform
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Related Information Examples [] Mat
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Options Operands Exit Status Relate
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Page 98 and 99: For more information about the java
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Page 120 and 121: true - Return true value Synopsis D
Page 122 and 123: Exit Status Examples 106 Qshell Int
Page 124 and 125: expr 10 = 10 [ Legal | AS/400 Gloss
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