Capture carriage return.


 
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# 1  
Old 12-15-2003
Network 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
# 2  
Old 12-15-2003
# VAR="adfadf"; LENGTH=`expr "$VAR" : '.*'`; echo $LENGTH

I doubt whether your syntax is correct, just use the above it will work correctly


If you want to get 0 for null string put VAR=""

Cheers
# 3  
Old 12-15-2003
You can try this way also if you want as a single command to be executed one at a time

# export VAR="adafadfadf"
# export LENGTH=`expr "$VAR" : '.*'`
# echo $LENGTH
10
# export VAR=""
# export LENGTH=`expr "$VAR" : '.*'`
# echo $LENGTH
0
#

Regards
# 4  
Old 12-15-2003
Also see the syntax

LENGTH=${#VARIABLE}
# 5  
Old 12-15-2003
You could also use awk:

var="adfadf"
echo $var | awk '{print length($0)}
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