ps--sort排序功能
ps aux --sort +rss/rss根据内存正序排
ps aux --sort -rss 逆序
ps aux --sort -pid/pid
ps aux --sort %cpu/-%cpu 根据cpu排序
关于ps命令显⽰不全的解决⽅法：ps aux | more ; ps auxww 后⾯的w要写两遍
man ps看下帮助信息：
-w Use 132 columns to display information, instead of the default which is your window size. If the -w option is specified more than once, ps will use as many columns as
sort命令排序necessary without regard for your window size. When output is not to a terminal, an unlimited number of columns are always used.
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