Summary
Bash has the ability to test for conditions and act accordingly. This is done using the test command, various bracket and parenthesis operators, and the if/then construct.
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Additionally, file test operators can be used to test various aspects of a file, such as if it exists, is readable/writable, etc..
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According to
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Summary
Every reasonably complete programming language can test for a condition, then act according to the result of the test. Bash has the test command, various bracket and parenthesis operators, and the if/then construct.
Tests
tldp.org
Examples of test constructs - Advanced Bash-Scripting Guide. How-to: Use parentheses to group and expand expressions case - Conditionally perform a command. ...
test Man Page - Linux - SS64.com
ss64.com
File Test Operators are used in Linux to check and verify attributes of files like ... Extension .sh belongs to the bash file. You may create both in the home ...
How to use Bash file test operators in Linux
howtoforge.com
Summary
File test operators let you test various aspects of a file like if a file exists, is readable/writable, etc.
Using file test operators can help to prevent errors in your Bash scripts.
Learning Bash File Test Operators With Examples
adamtheautomator.com
Bash test builtin command help and information with test examples, syntax, related ... systems, test is a builtin command of the Bash shell that tests file ...
Bash Test Builtin Command Help and Examples
computerhope.com
Well, I addressed several basic rules, now let's see what the test-command can do for you. The Bash test-types can be split into several sections: file tests , ...
The classic test command [Bash Hackers Wiki]
bash-hackers.org
