netcat 缺少 -x 選項

我在使用 nc 命令時遇到問題，我不能使用代理，因為沒有 -x 選項，它應該在那裡。

nc -h
[v1.10-41]
connect to somewhere:   nc [-options] hostname port[s] [ports] ...
listen for inbound:     nc -l -p port [-options] [hostname] [port]
options:
       -c shell commands       as `-e'; use /bin/sh to exec [dangerous!!]
       -e filename             program to exec after connect [dangerous!!]
       -b                      allow broadcasts
       -g gateway              source-routing hop point[s], up to 8
       -G num                  source-routing pointer: 4, 8, 12, ...
       -h                      this cruft
       -i secs                 delay interval for lines sent, ports scanned
       -k                      set keepalive option on socket
       -l                      listen mode, for inbound connects
       -n                      numeric-only IP addresses, no DNS
       -o file                 hex dump of traffic
       -p port                 local port number
       -r                      randomize local and remote ports
       -q secs                 quit after EOF on stdin and delay of secs
       -s addr                 local source address
       -T tos                  set Type Of Service
       -t                      answer TELNET negotiation
       -u                      UDP mode
       -v                      verbose [use twice to be more verbose]
       -w secs                 timeout for connects and final net reads
       -C                      Send CRLF as line-ending
       -z                      zero-I/O mode [used for scanning]
port numbers can be individual or ranges: lo-hi [inclusive];
hyphens in port names must be backslash escaped (e.g. 'ftp\-data').

我的netcat過時了嗎？我該如何更新它？感謝幫助。

看起來您已經安裝了“傳統的”netcat ( netcat-traditional)。該-x選項在OpenBSD netcat ( netcat-openbsd) 中可用。另請參閱：netcat-traditional 和 netcat-openbsd 之間有什麼區別？在問 Ubuntu。

netcat 有多種實現，您可能想要 BSD 一種，因為它提供了-x選項。在 Ubuntu 中，它在netcat-openbsd包中可用。

引用自：https://unix.stackexchange.com/questions/619861