thanks for the info .... ceau, Sriks
Dave Ihnat wrote: > On Thu, Nov 15, 2001 at 07:18:56PM +0530, srikrishnan wrote: > > basically i would like to know the functionality of how shell acts while > > parsing a file, and how it know EOF is reached while parsing . > > Well, given that the commands that you were given (sort, uniq) should do > the work you asked about, if you DO want to step through a file and terminate > when you reach EOF, the simplest on the order of: > > exec 0<$1; > while read INLINE > do > ... > done; > > If you didn't want to lose control of stdin, you can use file descriptors > other than zero; for instance, the above could become: > > exec 0<$1; > while read INLINE > do > ... > done; > > exec 9<&- > > Note that there's no way to assign that file descriptor to a variable, > and you'd better just KNOW program in your script or that you call opens > the file descriptor you've selected. (You're pretty safe if you stay over > about 5). Also note that I was neat, and closed the FD after I finished. > > I know this is more than you asked for, but WTH. This is how to pick up > nuggets of info. > > Cheers, > -- > Dave Ihnat > [EMAIL PROTECTED] > > _______________________________________________ > Redhat-list mailing list > [EMAIL PROTECTED] > https://listman.redhat.com/mailman/listinfo/redhat-list _______________________________________________ Redhat-list mailing list [EMAIL PROTECTED] https://listman.redhat.com/mailman/listinfo/redhat-list
