linux中如果是最小化安裝的系統，執行命令的時候很多會出現沒找到命令
[root@localhost ~]# mtr -bash: mtr: command not found [root@localhost ~]# tcping -bash: tcping: command not found
上述中沒找到mtr和tcping命令。
解決方法：
運行search命令查找對應包名下載即可。
[root@localhost ~]# yum search tcping Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: centos.01link.hk * epel: mirror.pregi.net * extras: centos.01link.hk * updates: centos.01link.hk ============================================ N/S Matched: tcping ============================================ tcping.x86_64 : Check of TCP connection to a given IP/Port Name and summary matches only, use "search all" for everything. [root@localhost ~]# yum search mtr Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: centos.01link.hk * epel: mirror.pregi.net * extras: centos.01link.hk * updates: centos.01link.hk ============================================= N/S Matched: mtr ============================================== mtr-gtk.x86_64 : The GTK+ interface for mtr mtr.x86_64 : A network diagnostic tool pcp-import-mrtg2pcp.x86_64 : Performance Co-Pilot tools for importing MTRG data into PCP archive logs Name and summary matches only, use "search all" for everything. [root@localhost ~]#
上述就是查找出對應包名了。執行對應命令即可
yum install -y mtr
yum install -y tcping
嗯，可能有人說這兩個包直接yum安裝就行了根本不用搜。其實這個whois試下，直接yum這個是沒有包的。他的正確包名是jwhois，這就體驗搜索的重要性了。