awk awk is a programming language good at processing text streams. 对于上述使用 sed 和后续处理指令得到的数据，如下所示： 1 xbot 1 yk 2 daemon 2 marko 2 nobody 2 usuario 4 test 8 bin 10 admin 156 root ...

If you use Windows today and type ls, cat, grep, or awk in a terminal, there is a good chance something useful will happen. That was not always true. For most of the history of personal computing, ...

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