Usage: ./perl [switches] [--] [programfile] [arguments] -0[octal] specify record separator (\0, if no argument) -a autosplit mode with -n or -p (splits $_ into @F) -C[number/list] enables the listed Unicode features -c check syntax only (runs BEGIN and CHECK blocks) -d[:debugger] run program under debugger -D[number/list] set debugging flags (argument is a bit mask or alphabets) -e program one line of program (several -e's allowed, omit programfile) -F/pattern/ split() pattern for -a switch (//'s are optional) -i[extension] edit <> files in place (makes backup if extension supplied) -Idirectory specify @INC/#include directory (several -I's allowed) -l[octal] enable line ending processing, specifies line terminator -[mM][-]module execute `use/no module...' before executing program -n assume 'while (<>) { ... }' loop around program -p assume loop like -n but print line also, like sed -P run program through C preprocessor before compilation -s enable rudimentary parsing for switches after programfile -S look for programfile using PATH environment variable -t enable tainting warnings -T enable tainting checks -u dump core after parsing program -U allow unsafe operations -v print version, subversion (includes VERY IMPORTANT perl info) -V[:variable] print configuration summary (or a single Config.pm variable) -w enable many useful warnings (RECOMMENDED) -W enable all warnings -x[directory] strip off text before #!perl line and perhaps cd to directory -X disable all warnings