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Full Discussion: how to automatically create a file?
Operating Systems Linux how to automatically create a file? Post 302504066 by ctsgnb on Sunday 13th of March 2011 12:32:31 PM
Old 03-13-2011
|| means OR that mean : if the left statement has a return code that differs from 0 then execute the statement that is on the right.

---------- Post updated at 05:32 PM ---------- Previous update was at 05:29 PM ----------

-f test the existence of the file : if false (return code differs from 0) then creates the file
This User Gave Thanks to ctsgnb For This Post:
roozis
 

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LEARN ABOUT LINUX

ctrlaltdel

CTRLALTDEL(8)						     Linux Programmer's Manual						     CTRLALTDEL(8)

NAME

       ctrlaltdel - set the function of the Ctrl-Alt-Del combination

SYNOPSIS

       ctrlaltdel hard|soft

DESCRIPTION

       Based  on examination of the linux/kernel/sys.c code, it is clear that there are two supported functions that the Ctrl-Alt-Del sequence can
       perform: a hard reset, which immediately reboots the computer without calling sync(2) and without any other preparation; and a soft  reset,
       which sends the SIGINT (interrupt) signal to the init process (this is always the process with PID 1).  If this option is used, the init(8)
       program must support this feature.  Since there are now several init(8) programs in the Linux community, please consult	the  documentation
       for the version that you are currently using.

       ctrlaltdel is usually used in the /etc/rc.local file.

FILES

       /etc/rc.local

SEE ALSO

       simpleinit(8), init(8)

AUTHOR

       Peter Orbaek (poe@daimi.aau.dk)

AVAILABILITY

       The ctrlaltdel command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.

Linux 1.2							  25 October 1993						     CTRLALTDEL(8)
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