hello_syz: 是打印每行中的第1，2，3个字段

janezhao0574: csdn怎么回事，图片全是显示不出来的

Shaddock_peel: 感恩，确实成功了

weixin_48399721: 感谢作者，亲测有效。操作过程可能会出现2个小问题： 1）“clnt_create: RPC: Program not registered”的问题-----https://blog.csdn.net/qq_35887546/article/details/105859614 2）clnt_create: RPC: Port mapper failure - Unable to receive: errno 113 (No route to host)---- https://blog.csdn.net/m0_60379130/article/details/123149933#:~:text=clnt_create%3A%20RPC%3A%20Port%20mapper%20failure%20-%20Unable%20to,to%20host%29%20%E9%97%AE%E9%A2%98%E5%8E%9F%E5%9B%A0%EF%BC%9A%20%E6%9C%8D%E5%8A%A1%E7%AB%AF%E7%9A%84%E9%98%B2%E7%81%AB%E5%A2%99%E4%B8%8A%E9%BB%98%E8%AE%A4%E6%B2%A1%E6%9C%89%E5%BC%80%E5%90%AFnfs%E6%9C%8D%E5%8A%A1%E7%9B%B8%E5%BA%94%E7%9A%84%E7%AB%AF%E5%8F%A3%20%E8%A7%A3%E5%86%B3%E6%96%B9%E6%B3%95%EF%BC%9A%E5%85%B3%E9%97%AD%E9%98%B2%E7%81%AB%E5%A2%99%20%E8%A2%AB%E8%AE%BF%E9%97%AE%E7%9A%84%20NFS%20%E6%9C%8D%E5%8A%A1%E5%99%A8%E4%B8%8A%E7%9A%84%E9%98%B2%E7%81%AB%E5%A2%99%E6%B2%A1%E6%9C%89%E6%B7%BB%E5%8A%A0%E8%A7%84%E5%88%99%EF%BC%8C%E5%90%91%E9%98%B2%E7%81%AB%E5%A2%99%E9%87%8C%E9%9D%A2%E6%B7%BB%E5%8A%A0%E4%BB%A5%E4%B8%8B%E6%9

qq_46661297: 应该是写错了 awk -F ":" '{print $1,$2,$3}' /etc/passwd awk -F ":" 是指定 ":"为分隔符，打印第1，2，3行