Unix Basic Commands I

In Vlsi Industries an engineer must be strong in the Digital Design, Analog Design and he/she should be strong in scripting language, shell commands. Few basic shell commnads which are widely used

• To get the information of commands
  • man <command_name>
    ex: man cd
  • <command_name> –ls
    ex: cd —ls
• To Change the Directory
  • cd <directory name/directory path>
    ex: cd directory name<or>directory path
    cd… ——– comes out of present directroy
• To list out the files or directory in present location
  •  ls gives the list of files or sub directories in present directory
  • ls -a gives the list of hidden files
• To link the file
  • ln <file_to_be_linked> instead of copying the file to we can link the file and thus save the space
• To create a directory
  • mkdir <directory_name>
    ex: mkdir vlsispace
  • mkdir –p  <directory>/<sub_directory>  creates a directory and then creates a sub_directory
    ex: mkdir -p /vlsi/space
• To create the files
  • touch  <file_name>  —— creates a empty file
  • vi<or>gvim<or>nedit <file_name> ——- this editors are used to create a file and the edit, save the files.
• To remove the files or Directories
  • rmdir  <directory_name>—— removes the directory
  • rm <file_name> —— removes the file
  • rm –rf  <file_name>or <directory_name>—– remove the directory or file