Linux
linux + 文件輸出操作
我們有以下文件（可能或多或少是同一行）
more /tmp/info linux01.sys76.com eno83122 Speed: 10000Mb/s linux02.sys76.com eno83122 Speed: 10000Mb/s linux03.sys76.com eno83122 Speed: 10000Mb/s linux01.sys76.com eno83122 Speed: 10000Mb/s linux02.sys76.com eno83122 Speed: 10000Mb/s linux03.sys76.com eno83122 Speed: 10000Mb/s linux01.sys76.com eno83122 Speed: 10000Mb/s linux02.sys76.com eno83122 Speed: 10000Mb/s linux03.sys76.com eno83122 Speed: 10000Mb/s linux01.sys76.com eno83122 Duplex: Full linux02.sys76.com eno83122 Duplex: Full linux03.sys76.com eno83122 Duplex: Full linux01.sys76.com eno83122 Duplex: Full linux02.sys76.com eno83122 Duplex: Full linux03.sys76.com eno83122 Duplex: Full linux01.sys76.com eno83122 Duplex: Full linux02.sys76.com eno83122 Duplex: Full linux03.sys76.com eno83122 Duplex: Full linux01.sys76.com eno83122 Link detected: yes linux02.sys76.com eno83122 Link detected: yes linux03.sys76.com eno83122 Link detected: yes linux01.sys76.com eno83122 Link detected: yes linux02.sys76.com eno83122 Link detected: yes linux03.sys76.com eno83122 Link detected: yes linux01.sys76.com eno83122 Link detected: yes linux02.sys76.com eno83122 Link detected: yes linux03.sys76.com eno83122 Link detected: yes如何操作輸出以便我們得到以下結果
預期結果（帶行縮進）
linux01.sys76.com eno83122 Speed 10000Mb/s linux02.sys76.com eno83122 Speed 10000Mb/s linux03.sys76.com eno83122 Speed 10000Mb/s linux01.sys76.com eno83122 Speed 10000Mb/s linux02.sys76.com eno83122 Speed 10000Mb/s linux03.sys76.com eno83122 Speed 10000Mb/s linux01.sys76.com eno83122 Speed 10000Mb/s linux02.sys76.com eno83122 Speed 10000Mb/s linux03.sys76.com eno83122 Speed 10000Mb/s linux01.sys76.com eno83122 Duplex Full linux02.sys76.com eno83122 Duplex Full linux03.sys76.com eno83122 Duplex Full linux01.sys76.com eno83122 Duplex Full linux02.sys76.com eno83122 Duplex Full linux03.sys76.com eno83122 Duplex Full linux01.sys76.com eno83122 Duplex Full linux02.sys76.com eno83122 Duplex Full linux03.sys76.com eno83122 Duplex Full linux01.sys76.com eno83122 Link_detected yes linux02.sys76.com eno83122 Link_detected yes linux03.sys76.com eno83122 Link_detected yes linux01.sys76.com eno83122 Link_detected yes linux02.sys76.com eno83122 Link_detected yes linux03.sys76.com eno83122 Link_detected yes linux01.sys76.com eno83122 Link_detected yes linux02.sys76.com eno83122 Link_detected yes linux03.sys76.com eno83122 Link_detected yes
**
Awk**解決方案：awk 'prev && prev != $3 { print ORS ORS }{ prev = $3 }1' /tmp/info輸出：
linux01.sys76.com eno83122 Speed: 10000Mb/s linux02.sys76.com eno83122 Speed: 10000Mb/s linux03.sys76.com eno83122 Speed: 10000Mb/s linux01.sys76.com eno83122 Speed: 10000Mb/s linux02.sys76.com eno83122 Speed: 10000Mb/s linux03.sys76.com eno83122 Speed: 10000Mb/s linux01.sys76.com eno83122 Speed: 10000Mb/s linux02.sys76.com eno83122 Speed: 10000Mb/s linux03.sys76.com eno83122 Speed: 10000Mb/s linux01.sys76.com eno83122 Duplex: Full linux02.sys76.com eno83122 Duplex: Full linux03.sys76.com eno83122 Duplex: Full linux01.sys76.com eno83122 Duplex: Full linux02.sys76.com eno83122 Duplex: Full linux03.sys76.com eno83122 Duplex: Full linux01.sys76.com eno83122 Duplex: Full linux02.sys76.com eno83122 Duplex: Full linux03.sys76.com eno83122 Duplex: Full linux01.sys76.com eno83122 Link detected: yes linux02.sys76.com eno83122 Link detected: yes linux03.sys76.com eno83122 Link detected: yes linux01.sys76.com eno83122 Link detected: yes linux02.sys76.com eno83122 Link detected: yes linux03.sys76.com eno83122 Link detected: yes linux01.sys76.com eno83122 Link detected: yes linux02.sys76.com eno83122 Link detected: yes linux03.sys76.com eno83122 Link detected: yes