How to check whether a software is installed in Linux

This article introduces you how to check whether a certain software is installed in Linux, the content is very detailed, interested friends can refer to it, I hope it can help you.

My system is red hat.

I checked whether a software (such as matlab and fluent) was installed with the command rpm, and got the following results:

I use rpm -qa (|grep) matlab , no display after enter

I use rpm -qa fluent , enter and nothing appears

I use rpm -qa vasp , enter and nothing appears

But in fact, it must be installed matlab and fluent, and I use [root@node1 /]# rpm -q fluent

package fluid is not installed

Matlab is the same.

Also, command [root@node1 /]# man rpm

No manual entry for rpm

Why is that?

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rpm -qa| grep package

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Try yum search with yum command

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If you use rpm-ivh matlab,

with rpm -qa| Grep matlab can be found.

if you are using

make && make install. Then it's best to go directly to the executive program and know if it's installed or not.

find / -name matlab

If so, it tells you which directory the executable program was released into.

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rpm -qa is to see if the software is installed, grep and find are to see the file location

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How to check which directory a software is installed in.linux?

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rpm -ql Software name Why don't you give me points,

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See what happens. There are generally source code and package installation in two ways. Source code installation, then you can see the configure log;rpm package mode, then you have to check the database, such as rpm -q query.- q