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

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Linux is a powerful developer operating system that can be quite confusing at times.  This can include but is not limited to using the system (?), setting up a network, and finding important files.  Please see below for help on various subjects in Linux.
  
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*[[This Is Your Brain On Informatics: Linux Commands|Using the System]]
! Command Name !! Command Description
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*[[This Is Your Brain On Informatics: Common Pathnames|Common Pathnames]]
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*[[This Is Your Brain On Informatics: Network|Setting up the Network]]
| cat [filename] || Display file’s contents to the standard output device (usually your monitor).
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*[[This Is Your Brain On Informatics: DenyHosts|Working with DenyHosts]]
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| cd /directorypath || Change to directory.
 
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| chmod [options] mode filename || Change a file’s permissions.
 
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| chown [options] filename || Change who owns a file.
 
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| clear || Clear a command line screen/window for a fresh start.
 
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| cp [options] source destination || Copy files and directories.
 
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| date [options] || Display or set the system date and time.
 
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| df [options] || Display used and available disk space.
 
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| du [options] || Show how much space each file takes up.
 
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| file [options] filename || Determine what type of data is within a file.
 
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| find [pathname] [expression] || Search for files matching a provided pattern.
 
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| grep [options] pattern [filesname] || Search files or output for a particular pattern.
 
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| kill [options] pid || Stop a process. If the process refuses to stop, use kill -9 pid.
 
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| less [options] [filename] || View the contents of a file one page at a time.
 
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| ln [options] source [destination] || Create a shortcut.
 
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| locate filename || Search a copy of your filesystem for the specified filename.
 
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| lpr [options] || Send a print job.
 
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| ls [options] || List directory contents.
 
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| /man [command] || Display the help information for the specified command.
 
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| mkdir [options] directory || Create a new directory.
 
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| mv [options] source destination || Rename or move file(s) or directories.
 
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| passwd [name [password]] || Change the password or allow (for the system administrator) to
 
change any password.
 
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| ps [options] || Display a snapshot of the currently running processes.
 
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| pwd || Display the pathname for the current directory.
 
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| rm [options] directory || Remove (delete) file(s) and/or directories.
 
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| rmdir [options] directory || Delete empty directories.
 
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| ssh [options] user@machine || Remotely log in to another Linux machine, over the network.
 
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| Exit || Leave an ssh session by typing
 
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| su [options] [user [arguments]] || Switch to another user account.
 
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| tail [options] [filename] || Display the last n lines of a file (the default is 10).
 
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| tar [options] filename || Store and extract files from a tarfile (.tar) or tarball
 
(.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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| touch filename || Create an empty file with the specified name.
 
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| who [options] || Display who is logged on.
 
  
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{{This Is Your Brain On Informatics}}
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[[Category:This Is Your Brain On Informatics]]

Latest revision as of 02:29, 19 March 2014

Linux is a powerful developer operating system that can be quite confusing at times. This can include but is not limited to using the system (?), setting up a network, and finding important files. Please see below for help on various subjects in Linux.