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#!/bin/bash
#
# Wait until a given file appears
#
# Params:
# $1 - filename
# $2 - maximum time to wait in seconds, default is 5 seconds
if [[ $# -lt 1 || $# -gt 2 ]]
then
echo "invalid arguments"
exit 1
fi
secs=$2
[ ! $secs ] && secs=5
let steps=$secs*10
for i in `seq 1 $steps`
do
# -f does not work for special files (e.g. UNIX domain sockets), use ls
# instead
ls $1 >/dev/null 2>&1
[ $? -eq 0 ] && exit 0
sleep 0.1
done
echo "File '$1' not available after $secs second(s)"
exit 1
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