colorize

README

colorize

Colorize terminal outputs of an arbitrary command.

Install

1. Install golang
2. Run the following command

go get -u github.com/tarao/colorize

Usage

Colorized outputs

For example, the following command will make your command outputs red. The color applies to both stdout and stderr.

colorize --fg=red -- your command and arguments

Different colors for stdout and stderr

Each command line option can have a prefix out- or err-, which corresponds to stdout and stderr respectively. The following command make the stdout outputs blue and stderr outputs red.

colorize --out-fg=blue --err-fg=red -- your command and arguments

Prefix

--prefix option insert a prefix text at the beginning of each output line. The following command make the stdout outputs blue with "out: " prefix and stderr outputs red with "err: " prefix.

colorize --out-fg=blue --out-prefix='out: ' --err-fg=red --err-prefix='err: ' -- your command and arguments

Patterns

You can restrict the colorization to be applied to matching parts of lines. The following command colorize lines start with Error: as red, and lines start with Warn: as yellow.

colorize --pattern='^Error:.*' --fg=red -- colorize --force --pattern='^Warn:.*' --fg=yellow -- your command and arguments

Notice that colorize command can be nested; it can colorize another outputs of colorize command. The important thing is --force option of the second colorize command. By default, colorize command ignores color options when the output is not a terminal. You need --force to stop ignoring color options for nested colorize command, whose output is piped, not a terminal.

Patterns also applies to the prefix part if --prefix option is specified together.

Other options

Other than --fg or --bg, you can use style options such as --italic and --underline. See colorize --help for the full list of options.

Available colors

You can use 16 ANSI colors listed as below.

• black
• red
• green
• yellow
• blue
• magenta
• cyan
• white
• hiblack
• hired
• higreen
• hiyellow
• hiblue
• himagenta
• hicyan
• hiwhite

License

• Copyright (C) INA Lintaro
• MIT License