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

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Command Description
{|
*cat [filename] Display file’s contents to the standard output device (usually your monitor).


*cd /directorypath Change to directory.
|-
 
! Command Name !! Command Description
*chmod [options] mode filename Change a file’s permissions.
| cat [filename] || Display file’s contents to the standard output device (usually your monitor).
 
|-
*chown [options] filename Change who owns a file.
| cd /directorypath || Change to directory.
 
|-
*clear Clear a command line screen/window for a fresh start.
| chmod [options] mode filename || Change a file’s permissions.
 
|-
*cp [options] source destination Copy files and directories.
| chown [options] filename || Change who owns a file.
 
|-
*date [options] Display or set the system date and time.
| clear || Clear a command line screen/window for a fresh start.
 
|-
*df [options] Display used and available disk space.
| cp [options] source destination || Copy files and directories.
 
|-
*du [options] Show how much space each file takes up.
| date [options] || Display or set the system date and time.
 
|-
*file [options] filename Determine what type of data is within a file.
| df [options] || Display used and available disk space.
 
|-
*find [pathname] [expression] Search for files matching a provided pattern.
| du [options] || Show how much space each file takes up.
 
|-
*grep [options] pattern [filesname] Search files or output for a particular pattern.
| file [options] filename || Determine what type of data is within a file.
 
|-
*kill [options] pid Stop a process. If the process refuses to stop, use kill -9 pid.
| find [pathname] [expression] || Search for files matching a provided pattern.
 
|-
*less [options] [filename] View the contents of a file one page at a time.
| grep [options] pattern [filesname] || Search files or output for a particular pattern.
 
|-
*ln [options] source [destination] Create a shortcut.
| kill [options] pid || Stop a process. If the process refuses to stop, use kill -9 pid.
 
|-
*locate filename Search a copy of your filesystem for the specified filename.
| less [options] [filename] || View the contents of a file one page at a time.
 
|-
*lpr [options] Send a print job.
| ln [options] source [destination] || Create a shortcut.
 
|-
*ls [options] List directory contents.
| locate filename || Search a copy of your filesystem for the specified filename.
 
|-
*/man [command] Display the help information for the specified command.
| lpr [options] || Send a print job.
 
|-
*mkdir [options] directory Create a new directory.
| ls [options] || List directory contents.
 
|-
*mv [options] source destination Rename or move file(s) or directories.
| /man [command] || Display the help information for the specified command.
 
|-
*passwd [name [password]] Change the password or allow (for the system administrator) to  
| mkdir [options] directory || Create a new directory.
|-
| mv [options] source destination || Rename or move file(s) or directories.
|-
| passwd [name [password]] || Change the password or allow (for the system administrator) to  
change any password.
change any password.
 
|-
*ps [options] Display a snapshot of the currently running processes.
| ps [options] || Display a snapshot of the currently running processes.
 
|-
*pwd Display the pathname for the current directory.
| pwd || Display the pathname for the current directory.
 
|-
*rm [options] directory Remove (delete) file(s) and/or directories.
| rm [options] directory || Remove (delete) file(s) and/or directories.
 
|-
*rmdir [options] directory Delete empty directories.
| rmdir [options] directory || Delete empty directories.
 
|-
*ssh [options] user@machine Remotely log in to another Linux machine, over the network.
| ssh [options] user@machine || Remotely log in to another Linux machine, over the network.
|-
*Leave an ssh session by typing exit
| Exit || Leave an ssh session by typing  
 
|-
*su [options] [user [arguments]] Switch to another user account.
| su [options] [user [arguments]] || Switch to another user account.
 
|-
*tail [options] [filename] Display the last n lines of a file (the default is 10).
| tail [options] [filename] || Display the last n lines of a file (the default is 10).
 
|-
*tar [options] filename Store and extract files from a tarfile (.tar) or tarball  
| tar [options] filename || Store and extract files from a tarfile (.tar) or tarball  
(.tar.gz or .tgz).
(.tar.gz or .tgz).
|-
| top || Displays the resources being used on your system. Press q to exit.
|-
| touch filename || Create an empty file with the specified name.
|-
| who [options] || Display who is logged on.


*top Displays the resources being used on your system. Press q to exit.
|}
 
*touch filename Create an empty file with the specified name.
 
*who [options] Display who is logged on.
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