Combining Options
 -0digits            Set record separator (octal number)
 -a                  Turn auto split mode on
 -c                  Check syntax of script, don't execute
 -d                  Run script under the PERL debugger
 -Dnumber            Set PERL debugging flags
 -e commandline      Specify one-line script
 -iextension         Use in place editing
 -Idirectory         Include path for C preprocessor
 -loctnum            Enable auto line-ending
 -n                  Assume wrapper to process argument files
 -p                  Assumes loop with continue to process command args
 -P                  runs C preprocessor on script before running it
 -s                  Enable rudamentary command line switch processing
 -S                  Uses PATH environment variable to search for script
 -u                  cause perl to dump core after compiling script
 -U                  allows perl to do unsafe operations
 -v                  prints the version and patchlevel
 -w                  Warns about identifiers mentioned only once
 -xdirectory         Extracts PERL program from input stream