search:linux shell script if not equal相關網頁資料

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日期:2024-07-28
Note that integer and string comparison use a different set of operators. ... String=' ' # Zero-length ("null") string variable. if [ -z "$String" ] then echo "\$String is null. ... bin/bash # str-test.sh: Testing null strings and unquoted strings, #...
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日期:2024-08-02
Could you kindly help me to integrate in this first script to add a user in /etc/shadow from a comma separeted file? I would like to export a list from a company application, create a .csv , and lunch it from a shell script or a php page in a website to i...
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日期:2024-07-31
test returns true in the following cases: test s s is not a null string test -n string string is nonzero test sting1 = string2 the two strings are equal test sting1 != string2 the two strings are not equal test integer1 -eq integer2 the integers are equal...
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日期:2024-08-03
#!/bin/bash # SCRIPT: prime2a.sh # USAGE : ./prime2a.sh # PURPOSE: Finds whether given number is prime or not echo -n "Enter a number: "read num # Integer Validation #...
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日期:2024-08-01
Is it worth noting that on MS-DOS, the behaviour of scripts was that a called script could change the directory (and even drive) of the calling command shell? And that Unix does not have this defect? – Jonathan Leffler Nov 4 '08 at 23:08...
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日期:2024-08-03
Hi, i need to compare two variables by using if statement if [ \$var1 -ne \$var2 ] then ......
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日期:2024-07-27
2013年3月14日 - The above code did not work for me, so I tried this instead: if [ "$PHONE_TYPE" ......
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日期:2024-07-29
2013年3月18日 - (return code of last executed command) is not equal to zero. The code is as follows: -....