awk实现行列反转
实现将下面文本的行列转换
[root@manager ~]# cat data
HOST_NAME status r15s r1m r15m ut pg io ls it tmp swp mem
node2 ok 0.0 0.0 0.0 0% 0.0 1 0 7340 34G 3.9G 1.6G
node1 ok 0.1 0.0 0.0 0% 0.0 2 1 882 34G 3.9G 1.6G
manager ok 0.3 0.0 0.0 2% 0.0 3 1 10 40G 3.6G 1.4G
使用一维数组
cat data | awk '{ for(i=1;i<=NF;i++){ if(NR==1){ arr[i]=$i; }else{ arr[i]=arr[i]" "$i; } } } END{ for(i=1;i<=NF;i++){ print arr[i]; } }'
执行结果
[root@manager ~]# cat data | awk '{ for(i=1;i<=NF;i++){ if(NR==1){ arr[i]=$i; }else{ arr[i]=arr[i]" "$i; } } } END{ for(i=1;i<=NF;i++){ print arr[i]; } }'
HOST_NAME node2 node1 manager
status ok ok ok
r15s 0.0 0.1 0.3
r1m 0.0 0.0 0.0
r15m 0.0 0.0 0.0
ut 0% 0% 2%
pg 0.0 0.0 0.0
io 1 2 3
ls 0 1 1
it 7340 882 10
tmp 34G 34G 40G
swp 3.9G 3.9G 3.6G
mem 1.6G 1.6G 1.4G