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Not able to put ls -lR command in background
Post 302887947 by omkar.jadhav on Tuesday 11th of February 2014 11:28:50 PM
02-12-2014
thanks sea...i am new to this unix world..so trying to learn the actual difference between the foreground and background process.
Now i have clear idea about it..thanks for the information and knowledge
Now i have clear idea about it..thanks for the information and knowledge
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tcgetsid
tcgetsid(3C) tcgetsid(3C) NAME
tcgetsid() - get terminal session ID SYNOPSIS
DESCRIPTION
The function returns the value of the session ID of the foreground process associated with the terminal referenced by fildes. is allowed from a process that is a member of a background process group (see termio(7)). RETURN VALUE
Upon successful completion, returns the value of the session ID of the foreground process associated with the terminal referenced by fildes. Otherwise, returns a value of and sets to indicate the error. ERRORS
If the function fails, it sets (see errno(2)) to one of the following values: [EACCES] The file associated with fildes is the controlling terminal of the calling process; however, there is no foreground process group defined for the controlling terminal. [EBADF] fildes is not a valid file descriptor. [ENOTTY] The file associated with fildes is not the controlling terminal or the calling process does not have a controlling terminal. SEE ALSO
getsid(2), setsid(2), tcgetpgrp(3C), thread_safety(5). tcgetsid(3C)