[RHEL5.2]
# strings -n file1
strings: invalid integer argument file1

# strings --bytes file1
strings: invalid integer argument file1

# strings -n 0
strings: invalid number 0

# strings --bytes 0
strings: invalid number 0


[RHEL5.3]
# strings -n file1
strings: invalid minimum string length 0

# strings --bytes file1
strings: invalid minimum string length 0

# strings -n 0
strings: invalid minimum string length 0

# strings --bytes 0
strings: invalid minimum string length 0