使用 awk 对齐列

使用 awk 对齐列

我正在尝试对齐这些列

super+t sticky toggle
super+Shift+space floating toggle
super+Shift+r restart
super+Shift+d mode $mode_launcher
super+Shift+c reload
super+r mode resize
super+Return i3-sensible-terminal
super+q kill
super+n Nautilus scratchpad show
super+m neomutt scratchpad show
super+minus scratchpad show
super+f fullscreen toggle
super+c bar mode toggle
super+button2 kill
super+alt+x systemctl -i suspend
super+alt+v cmus
super+alt+m neomutt
super+alt+c ~/bin/editinvim
super+alt+b ranger

我尝试过使用awk但没有运气。首选格式如下

super+Shift+d     mode $mode_launcher     
super+alt+c       ~/bin/editinvim
super+alt+b       ranger

答案1

或者,该命令column -t可用于设置列中文本的格式。

column -t file

默认的列分隔符是" "。在示例中,行有多个空格,但只有第一个分隔列:我们可以用“:”替换第一个并将其用作分隔符。

$ sed 's/ /:/1' file | column -s ':' -t
super+t            sticky toggle
super+Shift+space  floating toggle
super+Shift+r      restart
super+Shift+d      mode $mode_launcher
...

答案2

您可以重新打印第一列,在适当宽的字段中左对齐:

$ awk '{$1 = sprintf("%-30s", $1)} 1' file
super+t                        sticky toggle
super+Shift+space              floating toggle
super+Shift+r                  restart
super+Shift+d                  mode $mode_launcher
super+Shift+c                  reload
super+r                        mode resize
super+Return                   i3-sensible-terminal
super+q                        kill
super+n                        Nautilus scratchpad show
super+m                        neomutt scratchpad show
super+minus                    scratchpad show
super+f                        fullscreen toggle
super+c                        bar mode toggle
super+button2                  kill
super+alt+x                    systemctl -i suspend
super+alt+v                    cmus
super+alt+m                    neomutt
super+alt+c                    ~/bin/editinvim
super+alt+b                    ranger

如果你想根据第1列的长度自动选择合适的宽度,那么:

awk '
  NR==FNR {w = length($1) > w ? length($1) : w; next} 
  {$1 = sprintf("%-*s", w+4, $1)} 
  1
' file file

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