4 Dec
2001
4 Dec
'01
8:47 p.m.
Sometime today, Kinjal Sonpal wrote:
While going thru' the chapter of Pipes & Redirection from the *The Unix Programming Environment* (the famous yellow book by Kerninghan, et al) I read that when we use redirection, the system uses some temporary files to accomplish the task. Whereas by using pipes, the overhead of temp. files can be avoided.
What he means is that when you do this - prompt# program1 > p1.out; program2 < p1.out
you have to create the temporary file p1.out . You can avoid this by using a pipe - prompt# program1 | program2
program1 write to the pipe and program2 reads from the pipe.
HTH.
Manish
--
The clothes have no emperor.
-- C.A.R. Hoare, commenting on ADA.