I am having a challange to pass the asterisk in the variable. Basically, I am writing a shell script to check if a marker file exists but when I am assigning the varialbe it cannot use the wildcard asterisk as expected, therefore, my program is always outputs "Marker file is not arrived". Can someone pease help me how do I get it correct.
Marker file will arrive as Marker_YYYYMMDD.tmp but I would like to define it as below ...
Code:
FLAG=/test/Marker_*.tmp
if [ -f "$FLAG" ]
then
echo "Marker file exists"
else
echo "Marker file is not arrived,"
fi
Indeed the use of double quotes around "$FLAG" prevents the expansion of the wildcard. They can be left out, but then the test will fail if there are more files present with this pattern. To test for the presence of one of more files you could try:
Code:
FLAG=/test/Marker_*.tmp
file_exists() {
for _i do
[ -f "$_i" ] && break
done
}
if file_exists $FLAG
then
echo "One or more marker files exist"
else
echo "No marker files have arrived yet"
fi
I was trying to replace a string ( for eg - @@asterisk@@ to * ) in variable using
cat $INFILE | while read LINE
do
stmt1=`echo $LINE | sed 's/@@asterisk@@/\*/g'`
stmt=$stmt' '$stmt1
stmt2=`echo $LINE`
STATEMENT=$STATEMENT' '$stmt2
done
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