linux 系统中把一列数据变为一行数据
1、测试数据
[root@centos79 test]# cat a.txt 01 02 03 04 05 06 07 08 09 10
2、xargs
[root@centos79 test]# cat a.txt 01 02 03 04 05 06 07 08 09 10 [root@centos79 test]# cat a.txt | xargs 01 02 03 04 05 06 07 08 09 10
3、tr命令
[root@centos79 test]# cat a.txt 01 02 03 04 05 06 07 08 09 10 [root@centos79 test]# cat a.txt | tr "\n" " " | sed 's/.$/\n/' 01 02 03 04 05 06 07 08 09 10
4、awk命令
[root@centos79 test]# cat a.txt 01 02 03 04 05 06 07 08 09 10 [root@centos79 test]# awk '{ORS = " "}{print} END {printf "\n"}' a.txt 01 02 03 04 05 06 07 08 09 10
5、awk命令
[root@centos79 test]# cat a.txt 01 02 03 04 05 06 07 08 09 10 [root@centos79 test]# awk '{printf("%s ", $0)} END {printf "\n"}' a.txt 01 02 03 04 05 06 07 08 09 10
6、sed
[root@centos79 test]# cat a.txt 01 02 03 04 05 06 07 08 09 10 [root@centos79 test]# sed ':a; N; s/\n/ /; ta' a.txt 01 02 03 04 05 06 07 08 09 10
验证:
[root@centos79 test]# cat a.txt s e t g i k z n c d w u [root@centos79 test]# cat a.txt | xargs s e t g i k z n c d w u [root@centos79 test]# cat a.txt | tr "\n" " " | sed 's/.$/\n/' s e t g i k z n c d w u [root@centos79 test]# awk '{ORS = " "} {print} END {printf "\n"}' a.txt s e t g i k z n c d w u [root@centos79 test]# awk '{printf("%s ", $0)} END {printf "\n"}' a.txt s e t g i k z n c d w u [root@centos79 test]# sed ':a; N; s/\n/ /; ta' a.txt s e t g i k z n c d w u