linux 中sed命令如何删除第一列和最后一列

删除第一列

(base) root@PC1:/home/test# cat test.txt
1 MIR1302-10 1
2 FAM138A 2
3 OR4F5 3
4 RP11-34P13.7 4
5 RP11-34P13.8 5
6 AL627309.1 6
7 RP11-34P13.14 7
8 RP11-34P13.9 8
9 AP006222.2 9
10 RP4-669L17.10 10
(base) root@PC1:/home/test# sed 's/^\S\+[\t ]//' test.txt ## sed命令删除第一列
MIR1302-10 1
FAM138A 2
OR4F5 3
RP11-34P13.7 4
RP11-34P13.8 5
AL627309.1 6
RP11-34P13.14 7
RP11-34P13.9 8
AP006222.2 9
RP4-669L17.10 10

删除最后一列

(base) root@PC1:/home/test# cat test.txt
1 MIR1302-10 1
2 FAM138A 2
3 OR4F5 3
4 RP11-34P13.7 4
5 RP11-34P13.8 5
6 AL627309.1 6
7 RP11-34P13.14 7
8 RP11-34P13.9 8
9 AP006222.2 9
10 RP4-669L17.10 10
(base) root@PC1:/home/test# sed 's/[\t ]\+\S\+$//' test.txt ## sed命令删除最后一列
1 MIR1302-10
2 FAM138A
3 OR4F5
4 RP11-34P13.7
5 RP11-34P13.8
6 AL627309.1
7 RP11-34P13.14
8 RP11-34P13.9
9 AP006222.2
10 RP4-669L17.10