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string_operations

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se percent signs follow numbers. The expression ${DIRSTACK :-$PWD} evaluates to $DIRSTACK if it is non-null or $PWD (the current directory) if it is null. Table 4.1: Substitution Operator... ss rather than within the shell. Another utility, dirname(1), does essentially the opposite of basename

monitor

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====== Directory/File Monitoring with Bash ====== <code> #!/bin/bash # File Monitor # function list