Jim Hyslop wrote:
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Mark D. Baushke wrote:
longest=/tmp/cvsroot/another/and/another
echo $longest | sed 's:\(.*\)/\(.*\):\1 \2:' |
read -s longer shorter
echo "$longest, $longer, $shorter"
$longer and $shorter do not retain their values outside the read
function.
I don't know how to explain it, but perhaps the following script will help you
see some of it.
The strange thing for me, was that I thought the first echo in min would not
have any data because I had not defined longer & shorter prior to the
myfunction call.
#! /bin/bash
longest="/tmp/cvsroot/another/and/another"
myfunction()
{
read longer shorter
}
echo $longest | sed 's:\(.*\)/\(.*\):\1 \2:' > /tmp/junkme
myfunction < /tmp/junkme
echo "$longest, $longer, $shorter"
longer=nothing
shorter=lessthannothing
echo $longest | sed 's:\(.*\)/\(.*\):\1 \2:'|read longer shorter
echo "$longest, $longer, $shorter"
longer=nothing
shorter=lessthannothing
echo $longest | sed 's:\(.*\)/\(.*\):\1 \2:' > /tmp/junkme
myfunction < /tmp/junkme
echo "$longest, $longer, $shorter"
Though I do not have a copy, I have however read parts of one, the Oriley (bad
spelling) bash book was very good on explaining some of this.
--
Todd Denniston
Crane Division, Naval Surface Warfare Center (NSWC Crane)
Harnessing the Power of Technology for the Warfighter
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