Linux Firewall: IPTables Tutorial - Linux tutorial

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how to test if a file exists and its group is the effective group id in a korn shell script

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"Shell Curses" is a library of script functions that provide the shell programmer the ability to perform text-based cursor movements to specified locations on the screen. This ability permits the creation of menuing and data-entry systems using shell scripts without the need for compiled binaries. These functions are similar to the "C" language "Curses" library.

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