[Solved] Cannot use lsof command “- bash: lsof: command not found” in centos6

1. Problem Description
Under centos, the command lsof cannot be used, and the following message appears:
# lsof -i:3690
-bash: lsof: command not found
2. Solution
We can install it via yum:
# yum install lsof
I will do the following:
# yum install lsof
Loaded plugins: fastestmirror
Setting up Install Process
Loading mirror speeds from cached hostfile
* base: mirrors.163.com
* epel: ftp.cuhk.edu.hk
* extras: mirrors.aliyun.com
* updates: mirrors.163.com
Resolving Dependencies
–> Running transaction check
—> Package lsof.x86_64 0:4.82-4.el6 will be installed
–> Finished Dependency Resolution

Dependencies Resolved

================================================================================
Package Arch Version Repository Size
================================================================================
Installing:
lsof x86_64 4.82-4.el6 base 319 k

Transaction Summary
================================================================================
Install 1 Package(s)

Total download size: 319 k
Installed size: 890 k
Is this ok [y/N]: y
Downloading Packages:
lsof-4.82-4.el6.x86_64.rpm | 319 kB 00:00
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : lsof-4.82-4.el6.x86_64 1/1
Verifying : lsof-4.82-4.el6.x86_64 1/1

Installed:
lsof.x86_64 0:4.82-4.el6

Complete!
3. Some common commands of lsof
lsof -i:(port number)
For example,
lsof -i:3306 (3306 is the port of mysql server by default)
lsof -i:3690 (3690 is the default port for the svn server)

OK, Enjoy it!!!

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