+ + echo AIX
+ /usr/bin/sed -e s/[   ][      ]*/_/g
+ ./tr [A-Z] [a-z]

##</code><code>##

sh -x -e "echo abc | sed s'/a/b/'"

+ echo abc
+ sed s/a/b/
bbc

##</code><code>##

sh -x -c 'z=`echo abc | sed "s/a/b/"`'

++ echo abc
++ sed s/a/b/
+ z=bbc

##</code><code>##

rp="Operating system name?"
. ./myread
case "$ans" in
none)  osname='' ;;
*) osname=`echo "$ans" | $sed -e 's/[   ][      ]*/_/g' | ./tr '[A-Z]' '[a-z]'`;;
esac

##</code><code>##

rp="Operating system name?"
. ./myread
case "$ans" in
none)  osname='' ;;
*) echo "AAAA: ans='${ans}', sed='${sed}', Here is tr:"
cat ./tr
echo "BBBB: done cat tr"
osname=`echo "$ans" | $sed -e 's/[   ][      ]*/_/g' | ./tr '[A-Z]' '[a-z]'`
echo "CCCC: osname='${osname}'"
;;
esac
echo " "
echo "XXXXXX out of case with this osname='${osname}'"