例如，假设我正在尝试查找显示路由表（如route）或运行 a 的命令traceroute，但我实际上不知道完成此操作的命令。我的理解是我应该能够使用man -k [word]，但它似乎永远不起作用：如果我man -k route在 Scientific Linux 6.1 上使用，我不会得到任何结果，即使我希望它返回任何包含“route”一词的内容！
不幸的是，当我寻找这个问题的答案时，人们find对文件搜索命令的解释让我感到困惑。
谢谢你！
答案1
该命令/usr/bin/mandb将在 Linux 上重建 man 数据库。这应该设置为 cronjob。在其他 Unix 上使用 comamnd catman -w。
答案2
看一看apropos：
runejuhl@lapaz:~$ apropos apropos
apropos (1) - search the manual page names and descriptions
从我的系统：
runejuhl@lapaz:~$ apropos route
ip-mroute (8) - (unknown subject)
ip-route (8) - (unknown subject)
lft (1) - print the route packets trace to network host
lft.db (1) - print the route packets trace to network host
NETLINK_ROUTE (7) - Linux IPv4 routing socket
route (8) - show / manipulate the IP routing table
routef (8) - flush routes
routel (8) - list routes with pretty output format
tcptraceroute (1) - A traceroute implementation using TCP packets
tcptraceroute (8) - print the route packets trace to network host
tcptraceroute.db (8) - print the route packets trace to network host
tcptraceroute.mt (1) - A traceroute implementation using TCP packets
traceproto (1) - print the route packets trace to network host
traceproto.db (1) - print the route packets trace to network host
traceroute (1) - print the route packets trace to network host
traceroute-nanog (1) - print the route packets trace to network host
traceroute.db (1) - print the route packets trace to network host
traceroute6 (1) - print the route packets trace to network host
traceroute6.db (1) - print the route packets trace to network host