Closing the stdin in Bash script
For one of my requirement my script is behaving oddly and the reason come out was its stdin was open ( will right in detail later)
to fix the issue I need to close the stdin
reference - http://superuser.com/a/364519/439394
Closing File Descriptors
n<&-
Close input file descriptor n.
0<&-, <&-
Close stdin.
n>&-
Close output file descriptor n.
1>&-, >&-
Close stdout.
Bas