colcrt command in Linux systems is used to format the text processor output so that it can be viewed on Cathode Ray Tube displays. It removes underlining, strike-throughs and underscores, which can’t be displayed on CRTs since only one character can be produced at a given location on the CRT screen. It also places all the underscores on a new line, right under the original line.
Syntax:
colcrt [-] [-2] [file ...]
Note: For this article, we will be using the below-mentioned files to show the outputs of the colcrt command.
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GFG_1:
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geeksforgeeks.c
Options:
-
colcrt command with help option: The help option of colcrt command displays the usage/syntax of the colcrt command.
colcrt -h
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colcrt with ‘-‘ option: When colcrt is used with ‘ – ‘ option, the resulting output has all the special formatting (such as strikethrough, underscore, etc.) removed.
Example 1:
colcrt - GFG_1
Example 2:
colcrt - geeksforgeeks.c
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colcrt with ‘-2’ option: When colcrt is used with ‘-2’ option, the resulting output has all the special formatting removed, with the underscores additionally being displayed in new lines. Also, a new empty line is added after every line, which makes the output more easily readable.
Example 1:
colcrt -2 GFG_1
Example 2:
colcrt -2 geeksforgeeks.c