12-15-2003
Capture carriage return.
I try to test the carriage return in a variable.
$ LENGTH=`expr $VARIABLE : ".*"` will return the length of the variable. But this doesn't work if $VARIABLE has zero length.
Any help will be well appreciated.
Thanks in advance.
Giovanni
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LEARN ABOUT LINUX
printenv
PRINTENV(1) User Commands PRINTENV(1)
NAME
printenv - print all or part of environment
SYNOPSIS
printenv [OPTION]... [VARIABLE]...
DESCRIPTION
Print the values of the specified environment VARIABLE(s). If no VARIABLE is specified, print name and value pairs for them all.
-0, --null
end each output line with 0 byte rather than newline
--help display this help and exit
--version
output version information and exit
NOTE: your shell may have its own version of printenv, which usually supersedes the version described here. Please refer to your shell's
documentation for details about the options it supports.
AUTHOR
Written by David MacKenzie and Richard Mlynarik.
REPORTING BUGS
Report printenv bugs to bug-coreutils@gnu.org
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
Report printenv translation bugs to <http://translationproject.org/team/>
COPYRIGHT
Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
The full documentation for printenv is maintained as a Texinfo manual. If the info and printenv programs are properly installed at your
site, the command
info coreutils 'printenv invocation'
should give you access to the complete manual.
GNU coreutils 8.5 February 2011 PRINTENV(1)