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This Is Your Brain On Informatics: Linux Commands: Difference between revisions

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===Common Linux Commands===
===Common Linux Commands===
{| class="wikitable"
{| class="wikitable"
|-
! style="padding: 10px;"| Command
! style="padding: 10px;"| Syntax
! style="padding: 10px;"| Description
|-
|-
! Command
| style="padding: 10px;"| cat
! Syntax
| style="padding: 10px;"| cat ''filename''
! Description
| style="padding: 10px;"| Display file’s contents to the standard output device (usually your monitor)
|-
|-
| cat
| style="padding: 10px;"| cd
| cat ''filename''
| style="padding: 10px;"| cd ''/pathname''
| Display file’s contents to the standard output device (usually your monitor)
| style="padding: 10px;"| Change to the given directory
|-
|-
| cd
| style="padding: 10px;"| chmod*
| cd ''/pathname''
| style="padding: 10px;"| chmod ''options'' ''mode'' ''filename''
| Change to the given directory
| style="padding: 10px;"| Changes a file's permissions.
|-
|-
| chmod*
| style="padding: 10px;"| chown
| chmod ''options'' ''mode'' ''filename''
| style="padding: 10px;"| chown ''private_owner:group_owner'' ''filename''
| Changes a file's permissions.
| style="padding: 10px;"| Changes ownership of the file
|-
|-
| chown
| style="padding: 10px;"| clear
| chown ''private_owner:group_owner'' ''filename''
| style="padding: 10px;"| clear
| Changes ownership of the file
| style="padding: 10px;"| Clears the screen by scrolling (does not delete anything)
|-
|-
| clear
| style="padding: 10px;"| cp
| clear
| style="padding: 10px;"| cp ''options'' ''source'' ''destination''
| Clears the screen by scrolling (does not delete anything)
| style="padding: 10px;"| Copies a file from the source to the destination
|-
|-
| cp
| style="padding: 10px;"| find
| cp ''options'' ''source'' ''destination''
| style="padding: 10px;"| find ''/pathname'' ''string''
| Copies a file from the source to the destination
| style="padding: 10px;"| Starts at the indicated directory and searches for the string in a filename
|-
|-
| find
| style="padding: 10px;"| grep
| find ''/pathname'' ''string''
| style="padding: 10px;"| grep ''options'' ''pattern'' ''filename''
| Starts at the indicated directory and searches for the string in a filename
| style="padding: 10px;"| Searches for the pattern in the file
|-
|-
| grep
| style="padding: 10px;"| ifconfig
| grep ''options'' ''pattern'' ''filename''
| style="padding: 10px;"| ifconfig
| Searches for the pattern in the file
| style="padding: 10px;"| Displays the current networks available and various information about them
|-
|-
| ifconfig
| style="padding: 10px;"| ll
| ifconfig
| style="padding: 10px;"| ll ''/pathname''
| Displays the current networks available and various information about them
| style="padding: 10px;"| List Long:  lists the details of the entire directory or file indicated
|-
|-
| ll
| style="padding: 10px;"| ln
| ll ''/pathname''
| style="padding: 10px;"| ln ''options'' ''source'' ''destination''
| List Long:  lists the details of the entire directory or file indicated
| style="padding: 10px;"| Link:  creates a shortcut. Use -s for the ''options'' to create a soft link (more capabilities)
|-
|-
| ln
| style="padding: 10px;"| ls
| ln ''options'' ''source'' ''destination''
| style="padding: 10px;"| ls ''/pathname''
| Link: creates a shortcut.  Use -s for the ''options'' to create a soft link (more capabilities)
| style="padding: 10px;"| Lists the files and directories in a given directory
|-
|-
| ls
| style="padding: 10px;"| man
| ls ''/pathname''
| style="padding: 10px;"| man ''command''
| Lists the files and directories in a given directory
| style="padding: 10px;"| Opens the manual page for the given command
|-
|-
| man
| style="padding: 10px;"| mkdir
| man ''command''
| style="padding: 10px;"| mkdir ''options'' ''filename''
| Opens the manual page for the given command
| style="padding: 10px;"| Makes a directory at the given location with the given name
|-
|-
| mkdir
| style="padding: 10px;"| mv
| mkdir ''options'' ''filename''
| style="padding: 10px;"| mv ''options'' ''source'' ''destination''
| Makes a directory at the given location with the given name
| style="padding: 10px;"| Moves a file or directory from the source to the destination
|-
|-
| mv
| style="padding: 10px;"| [[This Is Your Brain On Informatics: Pico|pico]]
| mv ''options'' ''source'' ''destination''
| style="padding: 10px;"| pico ''filename''
| Moves a file or directory from the source to the destination
| style="padding: 10px;"| Opens the given file in the pico text editor
|-
|-
| [[This Is Your Brain On Informatics: Pico|pico]]
| style="padding: 10px;"| pwd
| pico ''filename''
| style="padding: 10px;"| pwd
| Opens the given file in the pico text editor
| style="padding: 10px;"| Displays the pathname for the current directory
|-
|-
| pwd
| style="padding: 10px;"| rm
| pwd
| style="padding: 10px;"| rm ''options'' ''filename''
| Displays the pathname for the current directory
| style="padding: 10px;"| Removes the given file.  If -rf is used for the options, a directory and its roots will be removed as well
|-
|-
| rm
| style="padding: 10px;"| ssh
| rm ''options'' ''filename''
| style="padding: 10px;"| ssh ''options'' ''user@machine''
| Removes the given file.  If -rf is used for the options, a directory and its roots will be removed as well
| style="padding: 10px;"| Remotely logs into the given machine with the given user name
|-
|-
| ssh
| style="padding: 10px;"| sudo
| ssh ''options'' ''user@machine''
| style="padding: 10px;"| sudo ''command''
| Remotely logs into the given machine with the given user name
| style="padding: 10px;"| Allows super user privileges for the given command (requires root password).  sudo su allows login to root
|-
|-
| sudo
| style="padding: 10px;"| tar
| sudo ''command''
| style="padding: 10px;"| tar -xzvf ''filename''
| Allows super user privileges for the given command (requires root password). sudo su allows login to root
| style="padding: 10px;"| Extracts files with the extension *.tar.gz or *.tgz
|-
|-
| tar
| style="padding: 10px;"| touch
| tar -xzvf ''filename''
| style="padding: 10px;"| touch ''filename''
| Extracts files with the extension *.tar.gz or *.tgz
| style="padding: 10px;"| Creates an empty file with given name
|-
|-
| touch
| style="padding: 10px;"| wget
| touch ''filename''
| style="padding: 10px;"| wget ''internet address''
| Creates an empty file with given name
| style="padding: 10px;"| Downloads a file from a given internet address
|-
| wget
| wget ''internet address''
| Downloads a file from a given internet address
|-
|-


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