347
edits
Changes
no edit summary
===General Linux Command Info===
*Almost every single command should have an argument (an input for a function)
*A filename in Linux refers to both a file's name and a directory's name
===Common Linux Commands===
{| class="wikitable"|- ! style="padding: 10px;"| Command! style="padding: 10px;"| Syntax! style="padding: 10px;"| Description|-| style="padding: 10px;"| cat| style="padding: 10px;"| cat ''filename''| style="padding: 10px;"| Display file’s contents to the standard output device (usually your monitor)|-| style="padding: 10px;"| cd| style="padding: 10px;"| cd ''/pathname''| style="padding: 10px;"| Change to the given directory|-| style="padding: 10px;"| chmod*| style="padding: 10px;"| chmod ''options'' ''mode'' ''filename''| style="padding: 10px;"| Changes a file's permissions. |-| style="padding: 10px;"| chown| style="padding: 10px;"| chown ''private_owner:group_owner'' ''filename''| style="padding: 10px;"| Changes ownership of the file|-| style="padding: 10px;"| clear| style="padding: 10px;"| clear| style="padding: 10px;"| Clears the screen by scrolling (does not delete anything)|-| style="padding: 10px;"| cp| style="padding: 10px;"| cp ''options'' ''source'' ''destination''| style="padding: 10px;"| Copies a file from the source to the destination|-| style="padding: 10px;"| find| style="padding: 10px;"| find ''/pathname'' ''string''| style="padding: 10px;"| Starts at the indicated directory and searches for the string in a filename|-| style="padding: 10px;"| grep| style="padding: 10px;"| grep ''options'' ''pattern'' ''filename''| style="padding: 10px;"| Searches for the pattern in the file|-| style="padding: 10px;"| ifconfig| style="padding: 10px;"| ifconfig| style="padding: 10px;"| Displays the current networks available and various information about them|-| style="padding: 10px;"| ll| style="padding: 10px;"| ll ''/pathname''| style="padding: 10px;"| List Long: lists the details of the entire directory or file indicated|-| style="padding: 10px;"| ln| style="padding: 10px;"| ln ''options'' ''source'' ''destination''| style="padding: 10px;"| Link: creates a shortcut. Use -s for the ''options'' to create a soft link (more capabilities)|-| style="padding: 10px;"| ls| style="padding: 10px;"| ls ''/pathname''| style="padding: 10px;"| Lists the files and directories in a given directory|-| style="padding: 10px;"| man| style="padding: 10px;"| man ''command''{|style="padding: 10px;"| Opens the manual page for the given command|-| style="padding: 10px;"| mkdir| style="padding: 10px;"| mkdir ''options'' ''filename''| style="padding: 10px;"| Makes a directory at the given location with the given name|-| style="padding: 10px;"| mv| style="padding: 10px;"| mv ''options'' ''source'' ''destination''| style="padding: 10px;"| Moves a file or directory from the source to the destination|-| style="padding: 10px;"| [[This Is Your Brain On Informatics: Pico|pico]]| style="padding: 10px;"| pico ''filename''| style="padding: 10px;"| Opens the given file in the pico text editor|-| style="padding: 10px;"| pwd| style="padding: 10px;"| pwd| style="padding: 10px;"| Displays the pathname for the current directory|-| style="padding: 10px;"| rm| style="padding: 10px;"| rm ''options'' ''filename''| style="padding: 10px;"| Removes the given file. If -rf is used for the options, a directory and its roots will be removed as well|-| style="padding: 10px;"| ssh| style="padding: 10px;"| ssh ''options'' ''user@machine''| style="padding: 10px;"| Remotely logs into the given machine with the given user name|-| style="padding: 10px;"| sudo| style="padding: 10px;"| sudo ''command''| style="padding: 10px;"| Allows super user privileges for the given command (requires root password). sudo su allows login to root
|-
|-
|style="padding: 10px;"| touch| style="padding: 10px;"| touch ''filename''| style="padding: 10px;"| Creates an empty file with given name
|-
|style="padding: 10px;"| wget| style="padding: 10px;"| wget ''internet address''| style="padding: 10px;"| Downloads a file from a given internet address
|-
|}
===*Notes on chmod===
'''chmod''' has several input options. Using a "+" and an "r", "w", and/or "x" will add read, write, or execute permissions respectively to the given file. A "-" will take these away. The other system is a binary system in which there are permissions for the private user, the group, and the public (other) given as 000 000 000 where each set of three 0's equals the private user, group, or public respectively. The first 0 in each set of 0's is for reading permission, the second for writing, and the third for executing. Because it is binary 100 000 000 (permission for the private user to read only) will be written as 400 in the command line (after translating the binary to decimal where 100 = 4)
{{This Is Your Brain On Informatics}}
[[Category:This Is Your Brain On Informatics]]