Shell Programming and Scripting

$>a='   abc def'; echo $(echo "$a" | sed 's/^\ *//')
abc def

$> value=" no rows selected"; val=$(echo "$value" | sed 's/^\ *//g'); echo output="$val"
output=no rows selected

$> which sed
/usr/bin/sed

#!/usr/bin/ksh
value=" no rows selected"
val=$(echo "$value" | sed 's/^\ *//g')
echo output="$val"

$> test5.sh
output=no rows selected

$ x=" no rows selected"
$ echo ${x# *}
no rows selected

a='   abc def'; echo $a; echo "$a"

val=$(echo $value |sed 's/ no/no/g' )