VARIABLES

  • Like most programming languages, the shell allows items to be stored in variables.
  • All shell variables store strings.

  • A variable is set using:
    NAME=VALUE
  • The variable name should start with a letter but can contain numbers and underscores
  • The value of a variable can be returned/used by adding a prefix $

  • Examples:
    $ var1=im1.nii.gz
    $ echo $var1
      im1.nii.gz
    $ echo var1
      var1
    $ ls $var1
      im1.nii.gz