15.1 Command-Line Options

-a

Turns on autosplit mode when used with -n or -p. Splits to @F.

-c

Checks syntax but does not execute.

-d

Runs the script under the debugger. Use -de 0 to start the debugger without a script.

-D number

Sets debugging flags.

-e commandline

May be used to enter a single line of script. Multiple -e commands may be given to build up a multiline script.

-F regexp

Specifies a regular expression to split on if -a is in effect.

-iext

Files processed by the < > construct are to be edited in place.

-Idir

With -P, tells the C preprocessor where to look for include files. The directory is prepended to @INC.

-l [ octnum ]

Enables automatic line-end processing, e.g., -l013.

-n

Assumes an input loop around your script. Lines are not printed.

-p

Assumes an input loop around your script. Lines are printed.

-P

Runs the C preprocessor on the script before compilation by Perl.

-s

Interprets -xxx on the command line as a switch and sets the corresponding variable $xxx in the script.

-S

Uses the PATH environment variable to search for the script.

-T

Forces taint checking.

-u

Dumps core after compiling the script. To be used with the undump (1) program (where available).

-U

Allows Perl to perform unsafe operations.

-v

Prints the version and patchlevel of your Perl executable.

-w

Prints warnings about possible spelling errors and other error-prone constructs in the script.

-x [ dir ]

Extracts Perl program from input stream. If dir is specified, switches to this directory before running the program.

-0val

(That's the number zero.) Designates an initial value for the record separator $/. See also -l.