你可以使用这个awk:
awk -v s='2,4' 'BEGIN{split(s,a,","); for (i in a) b[a[i]]} NR in b' file
two
four
通过单独的脚本lines.sh:
#!/bin/bash
awk -v s="$1" 'BEGIN{split(s,"); for (i in a) b[a[i]]} NR in b' "$2"
然后给出执行权限:
chmod +x lines.sh
并称之为:
./lines.sh '2,4' 'test.txt'