Changes between Version 4 and Version 5 of cypress/BasicLinuxComands


Ignore:
Timestamp:
08/18/15 16:24:04 (9 years ago)
Author:
cmaggio
Comment:

—

Legend:

Unmodified
Added
Removed
Modified

  • cypress/BasicLinuxComands

    v4 v5  
    22
    33== Basic Linux Commands ==
    4 Here are a few of the common Linux commands you will use to navigate the clusters and manipulate files and directories.
     4Here are a few of the most common Linux commands you will use. These commands will allow you to navigate the clusters as well as create, destroy, and manipulate files and directories.
    55
    66=== man ===
    … …  
    1010[tulaneID@cypress1 ~]$ man <command name>
    1111}}}
    12 === pwd and cd ===
    13 The '''pwd''' command lists the present working directory. The '''cd''' command changes directory.
     12
     13=== pwd ===
     14On a *nix system, directories are containers for files and objects. The '''pwd''' command lists the present working directory. This is the "where am I?" command.
    1415{{{
    1516[tulaneID@cypress1 ~]$ pwd
    1617/home/tulaneID
    17 [tulaneID@cypress1 ~]$ cd NextDirectoryUp
    18 [tulaneID@cypress1 ~]$ pwd
    19 /home/tulaneID/NextDirectoryUp
    20 }}}
     18}}}
     19
     20=== cd ===
     21
     22The '''cd''' command changes directory.
     23
     24{{{
     25[tulaneID@cypress1 ~]$ cd NextDirectoryDown
     26[tulaneID@cypress1 ~]$ pwd
     27/home/tulaneID/NextDirectoryDown
     28}}}
     29
     30As you can see, NextDirectoryDown is a ''subdirectory'' of tulaneID. And tulaneID is itself a subdirectory of home, which is a subdirectory of the root directory (/). Thus, the directories form a downward facing tree with all directories stemming from the root directory. You can move on level up in the try by typing '''cd ..''
     31
     32{{{
     33[tulaneID@cypress1 ~]$ pwd
     34/home/tulaneID/NextDirectoryDown
     35[tulaneID@cypress1 ~]$ cd ..
     36[tulaneID@cypress1 ~]$ pwd
     37/home/tulaneID
     38}}}
     39
     40And you can navigate using either relative or absolute paths. That is, you can enter directory paths relative to your current location, or you can entire the entire path starting with the root directory.
     41
     42{{{
     43[tulaneID@cypress1 ~]$ pwd
     44/home
     45[tulaneID@cypress1 ~]$ cd tulaneID/NextDirectoryDown
     46[tulaneID@cypress1 ~]$ pwd
     47/home/tulaneID/NextDirectoryDown
     48[tulaneID@cypress1 ~]$ cd /home
     49[tulaneID@cypress1 ~]$ pwd
     50/home
     51}}}
     52
    2153=== ls ===
    22 List files.
     54The '''ls''' command will list files in the current directory.
    2355{{{
    2456[tulaneID@cypress1 ~]$ ls
    … …  
    4577/u00/user/testdir
    4678}}}
     79
    4780=== rm ===
    4881Remove files and directories. CAUTION: THERE IS NO UNDOING THIS COMMAND.