Linux Commands: macro processor


m4-Linux Command

m4 command- macro processor

Syntax: m4 [Options...] [Macro-Definitions...] [Input-File...]

 

Description: A hidden treasure, m4 is a powerful macro processing filter, virtually a complete language. Although originally written as a pre-processor for RatFor, m4 turned out to be useful as a stand-alone utility. In fact, m4 combines some of the functionality of eval, TR, and in addition to its extensive macro expansion facilities.

Example:

Related:

  1. man command- Display helpful information about commands.

Syntax: man [-k] [command]

info [command]

help [-s] [command]

Description: These commands access the manual and information pages on system commands and installed utilities. When available, the info pages usually contain more detailed descriptions than do the man pages.

Example:

Related: more ,less

Other Linux Commands:
alias , break , builtin , cal , case , cat , cd , cfdisk , chgrp , chmod , chown , chroot , cksum , cmp , comm , continue , cp , cron , crontab , csplit , cut , date , dc , dd , declare , df , diff , diff3 , dir , dircolors , dirname , dirs , du , echo , egrep , enable , env , eval , exec , expand , export , expr , factor , false , fdformat , fdisk , fgrep , find , fmt , fold , for , fsck , function , getopts , hash , hashcharacter , head , history , hostname , id , if , import , install , join , kill , less , let , ln , local , locate , logname , logout , lpc , lpr , lprm , ls , m4 , man , mbadblocks , mkdir , mkfifo , mknod , more , mount , mtools , mv , nice , nl , nohup , passwd , paste , period , popd , pr , printf , ps , pushd , pwd , quota , quotacheck , quotactl , ram , rcp , read , readonly , return , rm , rmdir , rsync , Run , sdiff , sed , select , seq , set , shift , shopt , shutdown , sleep , sort , split , su , sum , symlink , sync , tac , tail , tar , tee , Test , time , times , top , touch , tr , traceroute , true , tsort , tty , Type , ulimit , umask , uname , Unexpand , uniq , units , unset , unshar , until , useradd , usermod , users , uuencode , watch , wc , whereis , which , while , who , xargs , yes ,
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