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Shell Programming and Scripting
variable not retaining value
Post 89896 by Perderabo on Wednesday 16th of November 2005 04:47:00 PM
11-16-2005
Pretty cool, huh? The bourne shell uses a subshells every now and then, like for your loop. When the loop is finished, the subshell exits, and the variables disappear like magic. Not only does the superfluous subshell process consume extra resources, it helps make the language nice and unpredictable. The bourne shell has lots more cool surprises like this, so expect a wild ride. 
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LEARN ABOUT REDHAT
dircolors
DIRCOLORS(1) FSF DIRCOLORS(1) NAME
dircolors - color setup for ls SYNOPSIS
dircolors [OPTION]... [FILE] DESCRIPTION
Output commands to set the LS_COLORS environment variable. Determine format of output: -b, --sh, --bourne-shell output Bourne shell code to set LS_COLORS -c, --csh, --c-shell output C shell code to set LS_COLORS -p, --print-database output defaults --help display this help and exit --version output version information and exit If FILE is specified, read it to determine which colors to use for which file types and extensions. Otherwise, a precompiled database is used. For details on the format of these files, run `dircolors --print-database'. AUTHOR
Written by H. Peter Anvin. REPORTING BUGS
Report bugs to <bug-coreutils@gnu.org>. COPYRIGHT
Copyright (C) 2002 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU- LAR PURPOSE. SEE ALSO
The full documentation for dircolors is maintained as a Texinfo manual. If the info and dircolors programs are properly installed at your site, the command info dircolors should give you access to the complete manual. dircolors (coreutils) 4.5.3 February 2003 DIRCOLORS(1)