Simple Linux Command Line notes: FMT

ArticleDirectory

• Parameters
• Option
• Example

Simple Text Formatting

FMT [Option] [File-list]

 

FMT performs simple text formatting by setting the length of all non-blank rows to almost the same

 

Parameters

FMTSlaveFile-listAnd the formatted version of the content is sent to the standard output. If you do not specify a file name or use a hyphen(-)To replace the file name, FMT reads text information from the standard input.

 

Option

-S: truncates long rows but does not merge them.

-T indented except the first line of each paragraph

-U changes the format so that there is a space between words and two spaces between sentences.

-W n: Change the output line width to n characters. Without this option, the FMT output line width is 75 characters

 

Example

Original file

 
$CatDemoLong TimeAgo, there was a huge apple tree. A little boy loved to come and play around it every day. He climbed to the tree top, ate the apples, took a nap under the shadow... He loved the tree and the tree loved to play with him.
 

 

FMT-S

$FMT-S demoLong TimeAgo, there was a huge apple tree. A little boy lovedto come and play around it every day. He climbed to the tree top, atethe apples, took a nap under the shadow... He loved the tree and Thetree loved to play with him.
 

Truncation of long rows

 

FMT-T

$FMT-T demoLong TimeAgo, there was a huge apple tree. A little boy loved to come and play around it every day. He climbed to the tree top, ate the apples, took a nap under the shadow... He loved the tree and the tree loved to play with him.
 

Exclude indentation of the first line

 

FMT-u

$FMT-U demoLong TimeAgo, there was a huge apple tree. A little boy loved to comeand play around it every day. He climbed to the tree top, ate the apples, took a nap under the shadow... He loved the tree and the tree loved toplay with him.
 

The interval between formatting words and sentences. Obviously, multiple spaces in a little boy are truncated to two

 

FMT-W

$FMT-W 40DemoLong TimeAgo, there was a hugeapple tree. A little boyloved to come and play around itevery day. He climbed to the tree top, ate the apples, took a nap under theshadow... He loved the tree and Thetree loved to play with him.
 

Specify the output line width. The line width here is 40 characters long and I have never counted it.