
Q&D Environment variable v1.0b by PhG

Syntax 1 : EV -s [-v] [-t] [-q] [-a] <variable>
Syntax 2 : EV <*> [-q] [-r]
Syntax 3 : EV -e [-v] [-t] [-q] [-a] <variable>
Syntax 4 : EV -i [-v] [-t] [-q] [-a] [-u] <variable> <value>

  -s  show environment variable value (default)
  -e  if environment variable exists, return code 128, else return code 255
  -i  if environment variable=value, return code 128, else return code 255

  -a  search for environment variable is case sensitive
  -u  search for environment variable value is case sensitive
  -t  trim environment variable value
  -q  delimit environment variable value with double quotes
  -r  raw display of all variables (similar to SET command)
  -v  verbose (-vv = very verbose)
