替换第一行的标号

yufeiluo

下面的记录
10 2017-03-03 12:04:10 /dev/pts/0 tty
11 2017-03-03 12:04:13 /dev/pts/0 pwd
12 2017-03-03 12:04:25 /dev/pts/0 tty
13 2017-03-03 12:04:27 /dev/pts/0 ls
14 2017-03-03 12:04:39 /dev/pts/0 history
改变成

1 2017-03-03 12:04:10 /dev/pts/0 tty
2 2017-03-03 12:04:13 /dev/pts/0 pwd
3 2017-03-03 12:04:25 /dev/pts/0 tty
4 2017-03-03 12:04:27 /dev/pts/0 ls
5 2017-03-03 12:04:39 /dev/pts/0 history


awk  '{print $2,$3,$4,$5,$6}'  /tmp/test.csv > /tmp/test2.csv
cat -n  /tmp/test2.csv > /tmp/test.csv
有无更简单的方法？

moperyblue

1. awk '$1=NR'

复制代码

sunzhiguolu

1. 
   
2. perl -pe 's/\d(\d+)/$1+1/e' f
   

复制代码

zy86416779

1. [root@CentOS_6 shell]# awk '{temp=$1-9;sub($1,temp);print}' a.txt     
   
2. 1 2017-03-03 12:04:10 /dev/pts/0 tty
   
3. 2 2017-03-03 12:04:13 /dev/pts/0 pwd
   
4. 3 2017-03-03 12:04:25 /dev/pts/0 tty
   
5. 4 2017-03-03 12:04:27 /dev/pts/0 ls
   
6. 5 2017-03-03 12:04:39 /dev/pts/0 history

复制代码