报错：command not found

linux中如果是最小化安装的系统，执行命令的时候很多会出现没找到命令

[root@localhost ~]# mtr
-bash: mtr: command not found
[root@localhost ~]# tcping
-bash: tcping: command not found

上述中没找到mtr和tcping命令。

解决方法：

运行search命令查找对应包名下载即可。

[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 ~]# 

上述就是查找出对应包名了。执行对应命令即可

yum install -y mtr
yum install -y tcping

嗯，可能有人说这两个包直接yum安装就行了根本不用搜。其实这个whois试下，直接yum这个是没有包的。他的正确包名是jwhois，这就体验搜索的重要性了。