The Three Musketeers of Linux---

Source: Internet
Author: User

The Three Musketeers of Linux, respectively, are Awk/sed/grep, which is an essential common command for operation and maintenance personnel.

One: awk takes column awk ' {print $1 ' "old.txt} '
Awk/aaa/old.txt II: SED takes the first and second lines: Sed–n '1, 2px ' old.txt /1/p old.txt /1/D old . txt Note:-n cancels the default output p for print output d for delete delete three: grep filter grep excludes AAA grep–v ' AAA ' Old.txt grep only stay AAA grep AAA old.txt

The Three Musketeers of Linux---

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