On Mon, Oct 18, 2004 at 07:51:49PM +0200, Olle Eriksson wrote: > I want to be able to receive input both through a pipe, and through > parameters to the script. For example: > > echo "blabla" | myscript.sh > and > myscript.sh "blabla"
Assuming "blabla" is a file name:
if [ -z "$1" -o ! -f "$1" ]
then
# No (valid) file specified, so we'll take stdin.
else
# File specified, so we'll read it instead of stdin.
exec < "$1"
fi
while read this that the other # ...
do
...
If it's just text, then check for its existence and process it, after
which you can read or ignore stdin at your whim.
> The script should be able to check whether or not any input is coming
> through the pipe, and if not use $1.
What I've listed above does the opposite, but presumably you can accomplish
your goals with that behaviour.
--
Mason Loring Bliss (( "In the drowsy dark cave of the mind dreams
[EMAIL PROTECTED] )) build their nest with fragments dropped
http://blisses.org/ (( from day's caravan." - Rabindranath Tagore
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