N ways to kill off the process under Linux

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the reason

When I install Apache Liunx service encounter

There exists a process, this process still waiting

This situation may lead to the reason I did not start running direct networking

yum install -y httpd

The process has been led to take up resources, pid is locked

Solution

General articles

First, review the process with ps, as follows:

ps -efsee details

At this point if I wanted to kill the process of yum would enter in a terminal:

kill -s 9 2457

-S 9 which developed the process signals are passed to 9, that is forced to terminate the process as soon as possible.

2457 PID is found in the yum above ps

After killing other processes yum, yum will be able to run normally

Advanced articles

Ps query results to grep to find a process that includes a specific string through the pipeline. Pipe character "|" designed to separate the two commands, command pipe character to the left of the output will be used as input pipe symbol to the right of command.

ps -ef | grep yum

So you can see the information more concise yum process

Use pgrep:

pgrep of p indicates the command grep is designed to process queries.

pgrep yum