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

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

Revision as of 18:43, 22 October 2013

Command Name Command Description cat [filename] Display file’s contents to the standard output device (usually your monitor).
cd /directorypath Change to directory.
chmod [options] mode filename Change a file’s permissions.
chown [options] filename Change who owns a file.
clear Clear a command line screen/window for a fresh start.
cp [options] source destination Copy files and directories.
date [options] Display or set the system date and time.
df [options] Display used and available disk space.
du [options] Show how much space each file takes up.
file [options] filename Determine what type of data is within a file.
find [pathname] [expression] Search for files matching a provided pattern.
grep [options] pattern [filesname] Search files or output for a particular pattern.
kill [options] pid Stop a process. If the process refuses to stop, use kill -9 pid.
less [options] [filename] View the contents of a file one page at a time.
ln [options] source [destination] Create a shortcut.
locate filename Search a copy of your filesystem for the specified filename.
lpr [options] Send a print job.
ls [options] List directory contents.
/man [command] Display the help information for the specified command.
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.

ps [options] Display a snapshot of the currently running processes.
pwd Display the pathname for the current directory.
rm [options] directory Remove (delete) file(s) and/or directories.
rmdir [options] directory Delete empty directories.
ssh [options] user@machine Remotely log in to another Linux machine, over the network.
Exit Leave an ssh session by typing
su [options] [user [arguments]] Switch to another user account.
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.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.
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