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Why should there be spaces around '[' and ']' in Bash?
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What's the difference between <<, <<< and < < in bash?
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what is [] brackets in .net?
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${1:+"$@"} in /bin/sh
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What is the purpose of the : (colon) GNU Bash builtin?
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What is the purpose of square bracket executable
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What is the use of the square brackets [] in sql statements?
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What's the difference between dot syntax and square bracket syntax?
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What is the purpose of square bracket usage in Angular?