Multiple choice technology operating systems

Which is not a filter in unix?

  1. pg

  2. ksh

  3. awk

  4. grep
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Unix filters are programs that read from standard input and write to standard output, transforming text data. pg, awk, and grep are all filters. ksh (KornShell) is a shell/interpreter, not a filter - it executes commands interactively or from scripts.

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