#
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Command Text
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Description
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1
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Cd /
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Go to root
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2
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Ls
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Show all folder file directory names
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Ls -l
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Show file permissions
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3
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Cd
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Change directory
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Cd ..
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Go back one step
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4
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Mkdir directory-Name
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Create directory
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5
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Touch app.txt
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Create file
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6
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Vi app.txt
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Edit file (vi default editor),
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7
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Insert mode
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Press I to insert mode, escape to out
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8
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Cat app.txt
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Show/print content
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9
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Cp app.txt /home/faizan/desktop
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Copy file to specific director
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10
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Mv file name directory
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Cut paste
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11
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Rm file name
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Delete
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12
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Man command name
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Help how command work
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13
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Find search-path “filename with extension”
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Find command for file
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14
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Find search-path -name “filename with extension or directory”
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15
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Uname
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OS name returning
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16
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Uname –a
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OS architecture or process architecture details
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17
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Lscp
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CPU speed and numbers
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18
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Df h
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Disk space, how much disk space acquired, h for human readable
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19
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Du directory
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Specific directory contains how many file with each size
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20
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Du -s directory
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Specific directory contains how many file with total size for total
file
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21
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date
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Show date
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22
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Cal
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Show Calendar
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23
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W
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Who is online login
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24
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Apt-get install package-name
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Install package name
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25
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Apt-cache search keyword
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Search specific package
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26
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Info
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27
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Type command
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Command file location
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28
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Bg
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Background service
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29
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Free (free –h)
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How much memory free and use
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30
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Ps
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Running process shows
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31
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Kill process id
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Kill process by id
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32
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Nice
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Set Low priority program
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33
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Top
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Show all process with memory usage
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34
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Su -
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Switch root in the shell.
Go to root, ask password.
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35
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shutdown
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36
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Sudo us
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To enter in root user
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37
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Sudo Apt-get install package-name
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Gain all privileges for normal
user
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38
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Chmood permission-integers file-name
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Grant permission
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39
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Uptime
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How much time for up
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40
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uname -srv
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41
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Alias myfile=”touch myfile.txt”
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Create my file whenever I write myfile inn terminal
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42
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Unalias myfile
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43
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Sudo useradd user-name –m
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Create user with name
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44
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Sudo passwd user-name
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Confirm password
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45
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Sudo userdel user-name –r
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User deleted
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46
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Info command-name (info ls)
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Get command online details
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47
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Whatis command-name
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Short description of command
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