Difference between revisions of "Centos Bash Commands"

Revision as of 15:17, 6 February 2019

Check Bash Shells installed

cat /etc/shells

Check who is logged on

id
whoami
w
who

Check type of System

uname -a

@@ Line 8: / Line 8: @@
 ''' Check type of System'''
   uname -a
-==File Commands==
- locate filename
-The locate command looks in a premade database that contains a list of all the files on the system. This database is indexed much like a textbook for fast searching, yet can become outdated as files are added and removed from the system, which happens on a regular basis. As a result, the database used for the locate command (/var/lib/mlocate/mlocate.db) is updated each day automatically and can be updated manually by running the updatedb command at a command prompt. You can configure the directories that are searched by the updatedb command by editing the /etc/updatedb.conf file.
-  find /etc -name inittab
-  updatedb # will update the database
-A slower yet more versatile method for locating files on the filesystem is to use the find command. The find command does not use a premade index of files; instead, it searches the directory tree recursively, starting from a certain directory for files that meet a certain criterion.
-<br />
-To use wild card characters with the find command, enclose with "host*"
- find /etc -name "host*"
-To find all files starting from the /var directory that have a size greater than 4096K (kilobytes), you can use the following command:
- find /var -size +4096k
- Find all the directories only underneath the /boot directory, you can type the following command:
- find /boot -type d
-Which Command searches directories that are listed in a special variable called the PATH variable in the BASH shell
- which ls
- /bin/ls
- which grep
- /bin/grep

Difference between revisions of "Centos Bash Commands"

Revision as of 15:17, 6 February 2019

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