Linux命令——awk中的$NF

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原文链接:https://blog.csdn.net/github_33736971/article/details/54286736

$NF表示最后一个列(field),即输出最后一个字段的内容。如下所示:

[root@localhost SHELL]# free -m | grep buffers\/
-/+ buffers/cache:       1815       1859
[root@localhost SHELL]# free -m | grep buffers\/ | awk '{print $NF}'
1859
[root@localhost SHELL]# free -m | grep buffers\/ | awk '{print NF}'
4
[root@localhost SHELL]# 

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转载自blog.csdn.net/gramdog/article/details/80397728