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If-Else Statement in Korn Shell. if [ Condition1 ] then block A1 elif [ Condition2 ] block A2 elif [ Condition3 ] block A3 elif [ Condition i-1 ] block Ai-1 else block Ai if checks the exit status of the last statement in the list following the if keyword.[67] (The list is usually just a single statement.) If the status is 0, the condition It saves me lot of typing and space/lines when I do not use full 'if' keyword and construct, instead use .. Code: [ ] && || that perfectly. A conditional expression is used with the [[ compound command to test attributes of files and -b File, True, if the specified file exists and is a block special file. 21 Jan 2005 Korn shell also provides a built-in print function to replace the echo command. The if construct is followed by an expression enclosed in Action on Success or on Failure of a Command. If one wants to do a thing only if a command '[' is not a grouping token in sh. You can do You should double quote your variables in [ ] conditions, or use the extended [[ ]] conditions (yes, a third type of condition). For numeric 18 Nov 2013 How do I use if command with KSH to make decisions on Unix like operating systems? KSH offers program flow control using if conditional command. For example, if directory /backup does not exists, create a new one so that your shell script can make backup to /backup directory. I am wondering what are the best practices regarding if/then/else ; I The problem with that style is that the two forms aren't equivalent. When you
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