colcrt - Linux


colcrt is a powerful command-line tool for colorizing and formatting text in Linux. It offers advanced text manipulation capabilities, enabling users to customize the visual appearance and display of text content for improved readability and impact.


colcrt [options] [text or file]


  • -c, –color=color-value: Sets the text color. Accepts any valid color name or hex code.
  • -b, –background=color-value: Sets the text background color. Accepts any valid color name or hex code.
  • -f, –font=font-name: Sets the text font. Available fonts vary depending on the system.
  • -s, –size=font-size: Sets the text font size in points.
  • -t, –bold: Sets the text to bold.
  • -i, –italic: Sets the text to italic.
  • -u, –underline: Underlines the text.
  • -o, –output=filename: Specifies an output file for the colorized text.
  • -v, –version: Displays the version information.
  • -h, –help: Displays the help menu.


Simple text colorization:

colcrt --color=red "This is red text"

Formatted text with background color:

colcrt -f "Helvetica" -s 12 -b green "Formatted and colorful text"

Save colorized text to a file:

colcrt -c blue -b yellow "Saved text" > colored_text.txt

Common Issues

  • Missing color names: Ensure that the specified color names are valid system colors.
  • Font availability: Some fonts may not be available on the system, resulting in the use of a default font.
  • Output file permissions: Verify that the output file has write permissions before saving colorized text.


Combine with other tools for advanced tasks:

# Colorize the output of the 'ls' command:
ls -l | colcrt -c green

# Create a colorized banner:
echo "Important Announcement" | colcrt -f "Times New Roman" -s 24 -c red

Related Commands

  • tput: Manipulates terminal settings and colors.
  • echo: Prints text to the standard output.