文件内容如下, 要求显示文件内容对应的行号
- [root@gaoyang ~ 13:01:16]# cat 123.txt
- name:i am gaoyang
- birthday:19961025
- what the fuck!!!!
- 1,cat -n 123.txt
- [root@gaoyang ~ 13:54:38]# cat -n 123.txt
- 1 name:i am gaoyang
- 2
- 3 birthday:19961025
- 4
- 5 what the fuck!!!!
- 2,nl 123.txt
- [root@gaoyang ~ 13:57:56]# nl 123.txt #===> 不显示空行
- 1 name:i am gaoyang
- 2 birthday:19961025
- 3 what the fuck!!!!
- 3,grep -n ".*" 123.txt
- [root@gaoyang ~ 13:58:56]# grep -n ".*" 123.txt
- 1:name:i am gaoyang
- 2:
- 3:birthday:19961025
- 4:
- 5:what the fuck!!!!
- 4,awk '{print NR,$0}' 123.txt
- [root@gaoyang ~ 14:01:15]# awk '{print NR,$0}' 123.txt
1 name:i am gaoyang
- 2
- 3 birthday:19961025
- 4
- 5 what the fuck!!!!
- 5,less -N 123.txt
- [root@gaoyang ~ 14:01:19]# less -N 123.txt
1 name:i am gaoyang
- 2
- 3 birthday:19961025
- 4
- 5 what the fuck!!!!
- 123.txt (END)
- 6,sed '=' 123.txt |sed 'N;s#\n# #g'
- [root@gaoyang ~ 14:02:23]# sed '=' 123.txt |sed 'N;s#\n# #g'
1 name:i am gaoyang
- 2
- 3 birthday:19961025
- 4
- 5 what the fuck!!!!
- 7,vim 123.txt :set nu
1 name:i am gaoyang
- 2
- 3 birthday:19961025
- 4
- 5 what the fuck!!!!
- :set nu
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