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Top Forums UNIX for Dummies Questions & Answers Need help with setting up environment variables Post 302388812 by SSSB on Thursday 21st of January 2010 01:58:10 PM
Old 01-21-2010
Bug Need help with setting up environment variables

hi all,
I would appreciate if some one could explain me the difference between setting up the variables as shown below

Code:
HOME=${HOME:-"/home/user1"}

Code:
HOME=/home/user1

 

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RNMAIL(1)						      General Commands Manual							 RNMAIL(1)

NAME
Rnmail - a program for replying via mail SYNOPSIS
Rnmail destination_list or Rnmail -h headerfile [oldarticle] or Rnmail DESCRIPTION
Rnmail is a friendly interface for mailing replies to news articles. It will ask several questions, then allow you to enter your letter, and then mail it off. If you type h and a carriage return at any point, Rnmail will tell you what it wants to know. The -h form is used when invoked from rn. If your editor can edit multiple files, and you want the article to which you are replying to show up as an alternate file, define the environment variable MAILPOSTER as "Rnmail -h %h %A". You can also modify the the MAILHEADER environment variable to change the header file that rn passes to Rnmail. ENVIRONMENT
DOTDIR If defined, specifies a place other than your home directory where 'dot' files may be stored. This is primarily for accounts which are shared by more than one person. Default: $HOME EDITOR The editor you want to use, if VISUAL is undefined. Default: whatever your news administrator installed, usually vi. HOME Your home directory. Default: $LOGDIR LOGDIR Your home directory if HOME is undefined. LOGNAME Your login name, if USER is undefined. Default: value of "whoami". MAILRECORD If defined, contains the name of a file to which the finished message will be appended. Default: message not saved ORGANIZATION Either the name of your organization, or the name of a file containing the name of your organization. Default: whatever your news administrator chose. USER Your login name. Default: $LOGNAME VISUAL The editor you want to use. Default: $EDITOR FILES
$DOTDIR/.letter ~/dead.letter SEE ALSO
rn(1), Pnews(1), mail(1) DIAGNOSTICS
BUGS
Uses /bin/mail in the absence of sendmail. LOCAL RNMAIL(1)
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