Common used Linux SSH commands

Question

We will list common SSH commands under this page

Answer 1

How to find linux version?

 

• Redhat and friends: Test for /etc/redhat-release, check contents
• Debian: Test for /etc/debian_version, check contents
• Mandriva and friends: Test for /etc/version, check contents
• Slackware: Test for /etc/slackware-version, check contents

Etc. Generally speaking, check for /etc/*-release and /etc/*-version.

Answer 2

 How to find a file in linux

Finding by Name

The most obvious way of searching for files is by name.

To find a file by name, type:

 find -name "query" 

This will be case sensitive, meaning a search for "file" is different than a search for "File".

To find a file by name, but ignore the case of the query, type:

 find -iname "query" 

If you want to find all files that don't adhere to a specific pattern, you can invert the search with "-not" or "!". If you use "!", you must escape the character so that bash does not try to interpret it before find can act:

 find -not -name "query_to_avoid" 

Or

 find \! -name "query_to_avoid" 

 

Finding by Type

You can specify the type of files you want to find with the "-type" parameter. It works like this:

 find -type type_descriptor query 

Some of the most common descriptors that you can use to specify the type of file are here:

• f: regular file

• d: directory

• l: symbolic link

• c: character devices

• b: block devices

For instance, if we wanted to find all of the character devices on our system, we could issue this command:

 find / -type c 

 /dev/parport0 /dev/snd/seq /dev/snd/timer /dev/autofs /dev/cpu/microcode /dev/vcsa7 /dev/vcs7 /dev/vcsa6 /dev/vcs6 /dev/vcsa5 ...