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sed is a command-line stream editor for filtering and transforming text.

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first line, found pattern class <space> then read the immediate character following class <space>, it was uppercase 'C', implies test OK. Test fails for the second line. Basically, set a bash variable, say test, to FALSE if test fails otherwise TRUE. How do I do this using awk, sed, or grep? …
asked Dec 7 '17 by learnerX
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... echoes FALSE There can be multiple such def <space> patterns within the file and if any of them fails the test, the overall result is FALSE. How do I do this using awk, grep, or sed? …
asked Dec 7 '17 by learnerX