Process Text Streams Using Filters

Oct 5, 2017

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CompTIA Linux+/LPIC-1 Portable Command Guide: All the commands for the CompTIA LX0-103 & LX0-104 and LPI 101-400 & 102-400 exams in one compact, portable resource

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fmt

The fmt command performs simple formatting of text data. Important options include the following:

Option	Description
-u	Changes the document so there is only one space between each word and two spaces after each sentence.
-w	Used to specify the maximum number of characters in each line.

Example:

[student@localhost ~]$ cat data.txt
pam_motd — Display the motd file

DESCRIPTION

pam_motd is a PAM module that can be used to display arbitrary motd
(message of the day) files after a successful login. By default
the /etc/motd file is shown. The message size is limited to 64KB.

[student@localhost ~]$ fmt -w 40 data.txt
pam_motd — Display the motd file

DESCRIPTION

pam_motd is a PAM module that can be
used to display arbitrary motd (message
of the day) files after a successful
login. By default the /etc/motd file
is shown. The message size is limited
to 64KB.

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