Shell Programming and Scripting

$ cat test.sh
#! /bin/bash

while read x
do
    echo $x | grep -q "Daily"
    if [ $? -eq 0 ]
    then
        [ `echo $x | cut -d_ -f2 | cut -c5-6` -eq $1 ] && echo $x
        continue
    fi
    echo $x | grep -q "Monthly"
    if [ $? -eq 0 ]
    then
        [ `echo $x | cut -d_ -f2 | cut -c5-6` -eq $1 ] && echo $x
    fi
done < inputfile
$
$ ./test.sh 10
a/b/c/Daily/file1_20111012.log
d/e/f/Monthly/file1_20111001.log
$

grep: illegal option -- q
Usage: grep -hblcnsviw pattern file . . .

echo $x | grep "Daily" >> /dev/null

#! /bin/bash
while read x
do
    echo $x | grep "DAILY"  >>/dev/null
    if [ $? -eq 0 ]
    then
        [ `echo $x | cut -d_ -f2 | cut -c5-6` -eq $1 ] && echo $x
        continue
    fi
    echo $x | grep "MONTHLY"  >>/dev/null
    if [ $? -eq 0 ]
    then
        [ `echo $x | cut -d_ -f2 | cut -c5-6` -eq $1 ] && echo $x
    fi
done < /home/list.txt

./tst.sh: line 7: [: ti: integer expression expected
./tst.sh: line 7: [: wi: integer expression expected

$ grep '10[0-9][0-9]\.log$' file
/a/b/c/Daily/file1_20111012.log
/d/e/f/Monthly/file1_20111001.log
$