linux 显示奇数偶数行

linux高级命令求解。怎样输出一个文件里所有的奇数行或所有的偶数行的命令求解释。

浏览次数：60次

1.awk 'NR%2==1' file  / /显示奇数行
2.sed -n '1,$n;p' file   / /显示偶数行
3.sed -n '1,$p;n' file / /显示奇数行
4.奇数行:sed '2~2d' file / /显示奇数行
5.偶数行:sed '1~2d' file/ /显示偶数行

first~step
              Match every step’th line starting with line first.  For example,  ‘‘sed  -n  1~2p’’  will  print all the odd-numbered lines in the    input stream, and the address 2~5 will match every  fifth  line,        starting  with the second.  first can be zero; in this case, sed       operates as if it were equal to step.  (This is an extension.)