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redirect stderr to dev/null in bash env.

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# 1  
Old 03-07-2006
redirect stderr to dev/null in bash env.
Working in a bash environment, in the following example, how do I direct the error message that putting in an invalid flag (-j for example) would normally produce to dev/null?

while getopts "abcd" opt
do
case "$opt" in
i) a etc ;;
r) b etc ;;
f) c etc ;;
v) d etc ;;
\?) direct actual error message to dev/null

exit 1 ;;
esac
done
# 2  
Old 03-07-2006
Quote:
Originally Posted by Sniper Pixie
Working in a bash environment, in the following example, how do I direct the error message that putting in an invalid flag (-j for example) would normally produce to dev/null?

while getopts "abcd" opt
do
case "$opt" in
i) a etc ;;
r) b etc ;;
f) c etc ;;
v) d etc ;;
\?) direct actual error message to dev/null

exit 1 ;;
esac
done
Code:
while getopts "abcd" opt
do
    case "$opt" in
      i) a etc ;;
      r) b etc ;;
      f) c etc ;;
      v) d etc ;;
      *) exit 1 ;;
    esac
done

Just exit.
# 3  
Old 03-07-2006
That doesn't work. It still outputs that -j is an invalid option
# 4  
Old 03-07-2006
if you are so particular about the error messages from bash...
then this would do..

Code:
bash <yourscript> 2>/dev/null

# 5  
Old 03-07-2006
Playing around...

Code:
while getopts "abcd" opt
do
    case "$opt" in
      i) a etc ;;
      r) b etc ;;
      f) c etc ;;
      v) d etc ;;
      \?) echo "$opt" 2>/dev/null ; exit 1 ;;
    esac
done

# 6  
Old 03-07-2006
Else see this link - . Handling Command Line Arguments
# 7  
Old 03-07-2006
I'm afraid neither of those two solutions work. Both still print the error message, with the added bonus of yours producing a question mark as well, Vino.
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