Linux in a Nutshell, Fifth Edition

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Chapter 3: Linux Commands

This is the Title of the Book, eMatter Edition

Copyright © 2006 O’Reilly & Associates, Inc. All rights reserved.

-V, --version

Print the version information for fetchmail and display the

options set for each mail server. Perform no fetch.

-w n, --warnings n

When issuing warnings about oversized messages, wait n

seconds after each warning before sending another warning.

-Z nnn, --antispam nnn

Specify the SMTP error nnn to signal a spam block from the

client. If nnn is -1, this option is disabled. Multiple SMTP

codes may be given as a comma-separated list. By default,

fetchmail discards messages with error codes 571, 550, 501,

and 554.

fgconsole

fgconsole

Print the number of the current virtual console. For example, if you

are using /dev/tty1, the command would return 1.

fgrep

fgrep [options] string [files]

Search one or more files for lines that match the specified text

string. Exit status is 0 if any lines match, 1 if not, and 2 for errors.

fgrep is faster than normal grep searches, but less flexible: it can

only find fixed text, not regular expressions.

See grep for the list of available options. Also see egrep.

Examples

Print lines in file that don’t contain any spaces:

fgrep -v ' ' file

Print lines in file that contain the words in the file spell_list:

fgrep -f spell_list file

file

file [options] files

Classify the named files according to the type of data they contain.

file