SHELL Script Variable Declaration

  • Local Variables
  • Environment Variables
  • Shell Variables (special)

Local Variables:

created and maintained by user.

Syntax: variable=value

Example:
a=10
Echo $a

Environment Variables:

Examples:

echo $HOME
echo $PWD

Shell Variables (special):

Example:
echo $#
echo $?
echo $-
echo $$
echo $*

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