UNIX and Linux Shell Script Test Command - IT For Everyone! 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
Linux Script Test Conditions - The Computer Technology Documentation Project There is a function provided by bash called test which returns a true or false value depending on the result of the tested expression. ... Linux Script Test Conditions There is a function provided by bash called test which returns a true or false value de
File test operators Advanced Bash-Scripting Guide: Prev, Chapter 7. Tests, Next. 7.2. File test operators. Returns true if... -e. file exists. -a. file exists. This is identical in effect to -e.
Chapter 7. Conditional statements - "Tille" Garrels The TEST-COMMAND list is executed, and if its return status is zero, the ... -o OPTIONNAME ], True if shell option “OPTIONNAME” is enabled. [ -z STRING ], True ...
Test Constructs An if can test any command, not just conditions enclosed within brackets. .... Therefore, in a Bash script, test does not call the external /usr/bin/test binary, which is part of the sh-utils package. Likewise ...
bash - how to represent multiple conditions in shell script? - Stack Overflow I want to represent multiple condition like this: if [ ( $g -eq 1 -a "$c" = "123" ) -o ( $g -eq 2 -a "$c" = "456" ) ] then echo abc; else echo efg; fi but when I execute the
The Beginner’s Guide to Shell Scripting 4: Conditions & If-Then Statements We’ve covered enough of the basics in our guide on shell scripting that you should feel comfortable experimenting. In this week’s installment, we’ll be tackling some of the more fun stuff, like conditions and “if-then” statements.
A MySQL database backup (mysqldump) shell script | alvinalexander.com A simple, free MySQL database backup (dump) shell script you can use to make MySQL backups. ... MySQL backups and Linux crontab tutorials On a related note, if you're not familiar with the Linux crontab facility, here are some of my crontab tutorials:
The Beginner's Guide to Shell Scripting 4: Conditions & If-Then ... 18 Aug 2011 ... test gt. You'll notice that only when that condition is true will the script execute the following command.
test, [, [[ -- test for condition - MKS Toolkit The test command checks for various properties of files, strings and integers. It produces no output (except error ...
