Creating a file on boot up

Hello groups,
I am writing am application in Linux 8.0 in which i need to
create an empty file or just touch it on bootup which i will use it
later in my application to check if the file exists. Can you tell me
how to create a file on boot up and in which boot file should i make
changes in order create an empty file.
Thanks for your previous replies.
waiting for reply ..................
bye.

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srinivas wrote:

> Hello groups,
> I am writing am application in Linux 8.0

There is no such thing as "Linux 8.0". Linux (which is the kernel of an
operating system) currently is at level 2.6 (2.6.7, IIRC). You probably
don't mean that your kernel is at 8.0 level, but that your
/distribution/ is at 8.0 level.

This may seem pedantic, but it is important. If we are to help you, we
need to know /which/ distribution you use.

> in which i need to
> create an empty file or just touch it on bootup which i will use it
> later in my application to check if the file exists.

No problem. That is doable.

> Can you tell me
> how to create a file on boot up and in which boot file should i make
> changes in order create an empty file.

The exact manner depends on your distribution. One method would be to
include the statement
/bin/touch /path/to/my/file
in your /etc/rc.d/rc.local file (or the equivalent for your distribution).

Going one step back (and a bit more reliable), you could add a line in
your /etc/inittab to touch the file at startup. Be careful when you
select the name, runlevels and action for the entry, though. It is
fairly easy for someone who doesn't know what they are doing to foul up
their inittab enough to cause major problems in booting or running their
system.



> Thanks for your previous replies.
> waiting for reply ..................
> bye.


- --

Lew Pitcher, IT Consultant, Enterprise Application Architecture
Enterprise Technology Solutions, TD Bank Financial Group

(Opinions expressed here are my own, not my employer's)
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Lew Pitcher wrote:

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>
> srinivas wrote:
>
>> Hello groups,
>> I am writing am application in Linux 8.0
>
> There is no such thing as "Linux 8.0". Linux (which is the kernel of
> an operating system) currently is at level 2.6 (2.6.7, IIRC). You
> probably don't mean that your kernel is at 8.0 level, but that your
> /distribution/ is at 8.0 level.
>
> This may seem pedantic, but it is important. If we are to help you, we
> need to know /which/ distribution you use.
>
>> in which i need to
>> create an empty file or just touch it on bootup which i will use it
>> later in my application to check if the file exists.
>
> No problem. That is doable.
>
>> Can you tell me
>> how to create a file on boot up and in which boot file should i make
>> changes in order create an empty file.
>
> The exact manner depends on your distribution. One method would be to
> include the statement
> /bin/touch /path/to/my/file
> in your /etc/rc.d/rc.local file (or the equivalent for your
> distribution).
>
> Going one step back (and a bit more reliable), you could add a line in
> your /etc/inittab to touch the file at startup. Be careful when you
> select the name, runlevels and action for the entry, though. It is
> fairly easy for someone who doesn't know what they are doing to foul
> up their inittab enough to cause major problems in booting or running
> their system.
>
>
>
>> Thanks for your previous replies.
>> waiting for reply ..................
>> bye.
>
>
> - --
>
> Lew Pitcher, IT Consultant, Enterprise Application Architecture
> Enterprise Technology Solutions, TD Bank Financial Group
>
> (Opinions expressed here are my own, not my employer's)
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> uDCTrMTwC2iRrG6fDfzrvjE=
> =AZWv
> -----END PGP SIGNATURE-----


If the file exists, touch will not empty the file.

To create an empty file, could this command be used instead?

cp /dev/null /path/to/my/file -f

This should replace the file with a new one if it exists or make the
file if it does not exist.

Clive