Showing posts with label Emojis - Ruby Command Line Options 🖥️ for ICM InfoWorks Ultimate. Show all posts
Showing posts with label Emojis - Ruby Command Line Options 🖥️ for ICM InfoWorks Ultimate. Show all posts

Saturday, October 21, 2023

Emojis - Ruby Command Line Options 🖥️ for ICM InfoWorks Ultimate

 Command Line Options 🖥️

Ruby interpreter accepts the following command-line options (switches). They're largely similar to Perl's options.

  • -0digit 📖

    • Sets the input record separator ($/) as an octal number. No digits mean the null character is the separator. -00 initiates Ruby's paragraph mode. -0777 makes Ruby process an entire file as one string.
  • -a 🚀

    • Activates auto-split mode with -n or -p. In this mode, Ruby runs $F = $_.split at the start of each loop.
  • -c

    • Ruby checks the script's syntax and exits. If there's no error, "Syntax OK" is displayed.
  • -Kc 🈸

    • Defines KANJI (Japanese character) code-set.
  • -d, --debug 🔍

    • Enables debug mode. $DEBUG is set to true.
  • -e script 📜

    • Takes script from the command-line. Ruby won't look for a script filename in the arguments with this switch.
  • -F regexp 🔗

    • Determines input field separator ($;).
  • -h, --help

    • Shows a summary of the options.
  • -i extension 📝

    • Specifies in-place-edit mode. If provided, the extension is added to the old filename for backup.

    Example:

    % echo matz > /tmp/junk % cat /tmp/junk matz % ruby -p -i.bak -e '$_.upcase!' /tmp/junk % cat /tmp/junk MATZ % cat /tmp/junk.bak 
    matzk.bak matz
  • -I directory 📂

    • Tells Ruby where to load library scripts. This path is added to the load-path variable ($:).
  • -l 🔚

    • Enables automatic line-ending processing. It sets $\ to the value of $/ and uses chop! on every line when used with -n or -p.
  • -n 🔄

    • Makes Ruby assume a loop around your script, similar to sed -n or awk.
  • -p 🖨️

    • Similar to -n, but prints the value of variable $_ at each loop's end.
  • -r filename 📁

    • Requires Ruby to load the file. Useful with -n or -p switches.
  • -s 🔄

    • Enables parsing for switches after the script name but before any filename arguments.
  • -S 🔍

    • Makes Ruby use the PATH environment variable to search for the script.
  • -T [level] 🛡️

    • Enables "taint" checks. If a level is specified, it sets $SAFE to that level.
  • -v, --verbose 🗣️

    • Enables verbose mode. Ruby will print its version at the start.
  • --version 🆚

    • Displays Ruby's version.
  • -w 📢

    • Enables verbose mode without the version message. Sets $VERBOSE to true.
  • -x[directory] 🗺️

    • Indicates the script is embedded in a message.
  • -X directory 🗺️

    • Makes Ruby switch to the specified directory.
  • -y, --yydebug 🐛

    • Enables compiler debug mode. Useful for debugging the Ruby interpreter itself.

Parent topic: ICM Exchange for Autodesk ⚙️🔄

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