我正在尝试使用 shell 脚本获取 top 命令的前 5 行。这是我的 shell 脚本的输出。
PID,USER,PR,NI,VIRT,RES,SHR,S,%CPU,%MEM,TIME+,COMMAND
3983,arun,20,0,1874616,500356,24132,R,47.6,10.3,53:19.92,gnome-shell
11,root,20,0,0,0,0,R,4.8,0.0,0:22.51,rcuos/0
2016,root,20,0,219396,44408,9120,S,4.8,0.9,9:53.96,Xorg
12081,arun,20,0,2689552,304132,7076,S,4.8,6.3,13:36.17,java
1,root,20,0,141660,5336,2940,S,0.0,0.1,0:08.40,systemd
3983,arun,20,0,1874616,500356,24132,R,56.2,10.3,53:20.99,gnome-shell
2016,root,20,0,219396,44408,9120,R,18.8,0.9,9:54.17,Xorg
4969,arun,20,0,1287084,162948,48472,S,12.5,3.4,5:39.99,chrome
16108,arun,20,0,130020,1692,1172,R,6.2,0.0,0:00.01,top
1,root,20,0,141660,5336,2940,S,0.0,0.1,0:08.40,systemd
3983,arun,20,0,1874616,500356,24132,R,43.8,10.3,53:24.56,gnome-shell
4969,arun,20,0,1275992,147104,32424,S,37.5,3.0,5:41.10,chrome
1,root,20,0,141660,5336,2940,S,0.0,0.1,0:08.40,systemd
2,root,20,0,0,0,0,S,0.0,0.0,0:00.06,kthreadd
3,root,20,0,0,0,0,S,0.0,0.0,0:04.93,ksoftirqd/0
这是我的 shell 脚本top.sh
#!/bin/bash
echo "started.."
top -b -n 3 | sed -n '7,1{s/^ *//;s/ *$//;s/ */,/gp;};12q' >> out.txt
while [ true ]; do
sleep 5
echo "inside loop.."
top -b -n 3 | sed -n '8,12{s/^ *//;s/ *$//;s/ */,/gp;};12q' >> out.txt
done
现在,我需要在每行末尾添加时间戳。我曾尝试使用awk
命令做同样的事情,但它对我不起作用!我已经像这样编辑了我的代码-
#!/bin/bash
echo "started.."
t= =$(date +"%T")
top -b -n 3 | sed -n '7,1{s/^ *//;s/ *$//;s/ */,/gp;};12q' >> out.txt
awk -F, '{$(NF+1)="TIME";}1' OFS=, out.txt
while [ true ]; do
sleep 5
t=$(date +"%T")
echo "inside loop.."
top -b -n 3 | sed -n '8,12{s/^ *//;s/ *$//;s/ */,/gp;};12q' >> out.txt
awk -F, '{$(NF+1)=$t;}1' OFS=, file
done