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tools:bash:getting-started [2024/05/20 03:23] – [rm and rmdir] Humphrey Boa-Garttools:bash:getting-started [2024/08/06 05:54] (current) – external edit 127.0.0.1
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   $ su username   $ su username
 +  
 +Open new remote shell for user //username@host// as child of current shell (see [[tools:ssh|SSH]] for more info):
 +
 +  $ ssh username@host
  
-You can use ''who am i'' to see who you are logged in as. You can bring up more identity info with the commands ''id'' and ''who -uh''.+You can use ''who am i'' to see who you are logged in as. You can bring up more identity info with the commands ''id'' and ''who -uH''.
  
 ===== Filesystem Traversal ===== ===== Filesystem Traversal =====
  
-Show present working directory:+Echo your shell's [[wp>Working directory|present working directory]] (pwd):
  
   $ pwd   $ pwd
  
-Show file tree for //path//:+Show file tree for the directory //path//:
  
   $ tree path/   $ tree path/
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   $ ls   $ ls
  
-Display directory listing. Some options include:+Outputs a list of contents of the pwd. Some options include:
  
   * ''-F'' (With folders identified)   * ''-F'' (With folders identified)
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   * ''-R'' (Recursive into subdirectories)   * ''-R'' (Recursive into subdirectories)
   * ''-i'' (Show inode number)   * ''-i'' (Show inode number)
 +
 +To show the contents of the directory //foldername//, in a human-readable long listing format with folders and hidden dotfiles identified, you would use:
 +
 +  $ ls -lhAF foldername/
 +==== cd ====
 +
 +Move your shell to a new working directory:
 +
 +  $ cd path/to/new/directory/
 +  
 +Move your shell up one level to the parent directory of your pwd:
 +
 +  $ cd ../
 +  
 +Move your shell to your home directory:
 +
 +  $ cd ~/
  
 ===== Viewing Contents of Files ===== ===== Viewing Contents of Files =====
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   $ grep searchterm path/   $ grep searchterm path/
  
 +For more information, see [[tools:grep|grep]].
 ===== Basic File and Directory Commands ===== ===== Basic File and Directory Commands =====
  
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 ==== ln ====  ==== ln ==== 
  
-Create hard link in pwd:+Create [[wp>Symbolic link|symbolic link]] (symlink) in pwd:
  
-  $ ln sourcefilename ./linkname+  $ ln -s sourcefilename ./linkname
  
-The flag ''-s'' creates a symlink instead of hard link.+This command normally creates [[wp>Hard link|hard links]] by default. The ''-s'' flag directs ''ln'' to create a symlink instead of hard link. In 9/10 cases, you will probably only need to use symlinks.
  
 +To use ''ln'' to add, say, a symlink for an executable [[tools:appimage|AppImage]] to your account's personal /bin/ directory, and assign it a new shorthand name, you would run something like this:
 +
 +  $ ln -s path/to/the.appimage ~/.local/bin/newname
 ==== mv ==== ==== mv ====
  
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   * ''-r'' (Remove directories and contents recursively)   * ''-r'' (Remove directories and contents recursively)
  
-Delete all files within the PWD:+Delete all files within pwd:
  
   $ rm ./*   $ rm ./*
      
-Delete all files matching extension //.bar// within PWD:+Delete all files within directory //foldername//: 
 + 
 +  $ rm foldername/* 
 +   
 +Delete all files matching extension //.bar// within pwd:
  
   $ rm ./*bar   $ rm ./*bar
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 ''rmdir'' will not delete a folder with contents. Use ''rm -rf foldername/'' to have **rm** to recursively delete the folder and its contents instead. ''rmdir'' will not delete a folder with contents. Use ''rm -rf foldername/'' to have **rm** to recursively delete the folder and its contents instead.
 +
 +----
 +
 +  * Next Page: [[tools:bash:shortcuts piping|Shortcuts & Piping Commands →]]
 +  * [[tools:bash|Back to Index]]
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