02-12-2010
Quote:
Originally Posted by
darshan.ghumare
Why contents of a.txt are "ABCDXYZEFGH"?
You write "ABCD" to it. Then you write "XYZ" to it. Then you write "EFGH" to it. "ABCD"+"XYZ"+"EFGH" = "ABCDXYZEFGH".
Quote:
More precisely, why kernel had not created separate entry in File Table for child process?
Because the child process didn't open it -- it inherited it. The behavior you've observed is the whole point. Every time you run a command in shell, you're using this property -- the command just writes to its inherited stdout and reads from its inherited stdin and needn't worry about its parent losing sync. This applies to any stream, not just terminals. If you really want them separate, open them separately.
Last edited by Corona688; 02-12-2010 at 02:53 PM..
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