bash if not equal

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bash if not equal

2016年12月24日 — Put it in a variable first and then try to test it, as shown below ret=$? if [ $ret -ne 0 ]; then echo "In If" else echo "In Else" fi. This should help. ,11.2 String comparison examples. Comparing two strings. #!/bin/bash S1='string' S2='String' if [ $S1=$S2 ]; then echo "S1('$S1') is not equal to S2('$S2')" fi if ... ,String Comparison. = == is equal to. The == comparison operator behaves differently ... ,To check if two strings are not equal in bash scripting, use bash if statement and not equal to != operator. Example 1 – Strings Equal Scenario. In this example ... ,2016年1月15日 — You can get a full list of comparison operators with help test or man test . ... #!/bin/bash a=2462620 b=2462620 if [ "$a" -eq "$b" ];then echo ... , Comparison Operators #. Comparison operators are operators that compare values and return true or false. When comparing ... ,integer comparison. -eq. is equal to. if [ "$a" -eq "$b" ]. -ne. is not equal to ... Bash permits integer operations and comparisons on variables #+ whose value ... , ,... match end of the line; =~ - Bash's built-in regular expression comparison operator ... Though that one is safe, if you have as habit using all upper case, one day ... ,2013年7月17日 — is equivalent to the test command, except that [ requires ] as its last argument, and test does not. Assuming the bash documentation is installed ...

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bash if not equal 相關參考資料
64 How to check if $? is not equal to zero in unix shell scripting?

2016年12月24日 — Put it in a variable first and then try to test it, as shown below ret=$? if [ $ret -ne 0 ]; then echo "In If" else echo "In Else" fi. This should help.

https://stackoverflow.com

BASH Programming - Introduction HOW-TO: Tables

11.2 String comparison examples. Comparing two strings. #!/bin/bash S1='string' S2='String' if [ $S1=$S2 ]; then echo "S1('$S1') is not equal to S2('$S2')" fi...

https://tldp.org

Bash Test Operators Cheat Sheet - Kapeli

String Comparison. = == is equal to. The == comparison operator behaves differently ...

https://kapeli.com

Check if two Strings are Equal in Bash Script - Tutorial Kart

To check if two strings are not equal in bash scripting, use bash if statement and not equal to != operator. Example 1 – Strings Equal Scenario. In this example ...

https://www.tutorialkart.com

How to compare numbers in bash? - Stack Overflow

2016年1月15日 — You can get a full list of comparison operators with help test or man test . ... #!/bin/bash a=2462620 b=2462620 if [ "$a" -eq "$b" ];then echo ...

https://stackoverflow.com

How to Compare Strings in Bash | Linuxize

Comparison Operators #. Comparison operators are operators that compare values and return true or false. When comparing ...

https://linuxize.com

Other Comparison Operators

integer comparison. -eq. is equal to. if [ "$a" -eq "$b" ]. -ne. is not equal to ... Bash permits integer operations and comparisons on variables #+ whose value ...

https://tldp.org

Scripting: If Comparison Operators In Bash - blog.100tb.com

https://blog.100tb.com

Using the not equal operator for string comparison - Unix ...

... match end of the line; =~ - Bash's built-in regular expression comparison operator ... Though that one is safe, if you have as habit using all upper case, one day ...

https://unix.stackexchange.com

What does "-ne" mean in bash? - Stack Overflow

2013年7月17日 — is equivalent to the test command, except that [ requires ] as its last argument, and test does not. Assuming the bash documentation is installed ...

https://stackoverflow.com