sed命令用于美化awk命令的输出

Question

我有一个awk命令的以下输出..我想美化输出如下..是否有一个sed命令将给我预期的输出？

CURRENT OUTPUT:-
    https://code-comp.com/308271
                                (there is white space line here)   
    https://code-comp.com/308270
    466197
    https://code-comp.com/308263
    470188
    https://code-comp.com/308262
    https://code-comp.com/308261

以下是预期的输出

    EXPECTED OUTPUT:-
    https://code-comp.com/308271
    https://code-comp.com/308270 466197
    https://code-comp.com/308263 470188
    https://code-comp.com/308262
    https://code-comp.com/308261

Answer 1

这可能适合你（GNU sed）：

sed -r ':a;$!N;/\nhttps:/!{s/\n/ /;ta};s/\s*(\n|$)/\1/;P;D' file

Answer 2

sed 'N; /\n[0-9]/s/\n/ /; s/\n$//' foo.txt

• 在第二行阅读
• 查找以数字开头的行，合并前一行的行
• 删除空行