02-04-2005
Quote:
Originally Posted by encrypted
I believe no command in unix is dangerous if only you know
what you are doing!!
I believe that no command in unix is safe if you are signed on as (or su'ed to) to root.
cal > /dev/mem
9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello,
I want to list all files that were created since 3 month ago.
it exist a unix command to do it ?
thank you (8 Replies)
Discussion started by: yacsil
8 Replies
2. UNIX for Dummies Questions & Answers
Hi,
Iam a new member of this group
I have got one issue
I wanna to find out one file like *.pll
in a remote server using unix command i tried giving ls but it wont work acc to my expectation since ls list out the file only in a particular directory
eg in C DRIVE I SHUD BE ABLE TO... (2 Replies)
Discussion started by: dmerin
2 Replies
3. HP-UX
Hi everybody!
We have to upgrade serviceguard 11.14 to 11.16, so I get PHSS_36898 patch from HP.
Is it necessary to uninstall serviceguard 11.14 before install this patch? (I think so, but i am not sure).
Do you know if is "dangerous" this kind of upgrade? Any suggestions about?
Thx in... (1 Reply)
Discussion started by: kaugrs
1 Replies
4. Shell Programming and Scripting
Hello, im taking a class of Unix and i dont really know much about it, im trying to create a list of menu a user would select from and im very lost. Basically it will have 5 options, the user will chose from:
1. list files in the pwd
2. display date and time
3. is the file file or directory
4.... (5 Replies)
Discussion started by: morava
5 Replies
5. Linux
I had a umount busy issue, that the usual fuser -mk did not solve, I did a umount -l and was able to unmount the device, I then got in trouble by the storage team staff:
Here was a snippet of their response:
Using "umount -l" is a potentially dangerous act.
The command combination for a lazy... (8 Replies)
Discussion started by: pastajet
8 Replies
6. Shell Programming and Scripting
Hello,
I have a Application which needs to run shell scripts in a elevated state (root) for system interrogation. So I execute each script using bash -C. This has worked really well.
I now want to add another layer of security, I cant inspect each of the scripts before they get deployed to the... (4 Replies)
Discussion started by: tjones1105
4 Replies
7. War Stories
Hello All,
I am posting a intresting story which is posted by Mark Brader but actual story is from Mario Wolczko. Original link is here
Thanks,
R. Singh (4 Replies)
Discussion started by: RavinderSingh13
4 Replies
8. UNIX for Beginners Questions & Answers
Hi Team,
Am a newbie to Unix. As I would like to see the Server Name,Owner Name ( not numeric form), Group Name ( not numeric ID), ROOT path.
I would like to send this list as an attachment to my personal mail. Can any one please help me out to to resolve this .
Here is the sample result... (6 Replies)
Discussion started by: vasuvv
6 Replies
9. UNIX for Beginners Questions & Answers
Hi All,
I have list of files like below with name abcxyz.timestamp. I need a unix command to pick the latest file from the list of below files. Here in this case the lates file is abcxyz.20190304103200. I have used this unix command "ls abcxyz*|tail -1" but i heard that it is not the appropriate... (2 Replies)
Discussion started by: rakeshp
2 Replies
MEM(4) Linux Programmer's Manual MEM(4)
NAME
mem, kmem, port - system memory, kernel memory and system ports
DESCRIPTION
mem is a character device file that is an image of the main memory of the computer. It may be used, for example, to examine (and even
patch) the system.
Byte addresses in mem are interpreted as physical memory addresses. References to nonexistent locations cause errors to be returned.
Examining and patching is likely to lead to unexpected results when read-only or write-only bits are present.
It is typically created by:
mknod -m 660 /dev/mem c 1 1
chown root:kmem /dev/mem
The file kmem is the same as mem, except that the kernel virtual memory rather than physical memory is accessed.
It is typically created by:
mknod -m 640 /dev/kmem c 1 2
chown root:kmem /dev/kmem
port is similar to mem, but the I/O ports are accessed.
It is typically created by:
mknod -m 660 /dev/port c 1 4
chown root:mem /dev/port
FILES
/dev/mem
/dev/kmem
/dev/port
SEE ALSO
chown(1), mknod(1), ioperm(2)
COLOPHON
This page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 1992-11-21 MEM(4)