Using a shell script, how can I create a directory remotely from serverA -> serverB using ssh? Can I pass the create directory command with the ssh command? How? I'm basically looking to create a directory remotely based on date (ex. 20110304), if it doesn't already exist.

We have a process that is using a working secured port using this scp command like so: /usr/bin/scp -P 1234 -i /path/key_rsa /home/path/filename.txt user@remotehost:/tmp I'm working on a schell script, that will use ssh, but not sure how to use that same port of 1234. I tried /usr/bin/ssh -D 1...

Sometimes I cat a stream like /dev/input/event0. I want to write a script that does something every time there is more output. The definition of more output might be every time it reads a byte. How can that be done? is there some command that does it?

I have a very big text file, about 80GB, and I need to cut a part form it that lies between two given lines. The part I need is not big, and I have not enough space left on the hard drive to do things like: head -n 10000000 filename > auxiliary_part tail -n 1000 auxiliary_part > needed_par...

I have a system which was designed for use by root only and I want to run an FTP server on it. The software I use handles authentication by using same username and password as OS itself. To me it looks safer to have another user for FTP data transfer and another which would just run FTP server. ...

Hi Guys, Im not sure if this is the right place for this kind of question, but here it goes anyways... I installed a program a few months ago, it had a startup option that I did install. Later, I decided to remove the program, but it seems to have left the startup script or item even after I un...

i dont know if this is the right forum to ask,i have started to use linux os (opensuse). i need to install mplayer on it.i unpacked the mplayer archive.then in the command screen i navigated to the folder containing the unpacked folder of mplayer.then i used the following commands ./configure bu...

I have an OpenWrt 10.03 router [ IP: 192.168.1.1 ], and it has a DHCP server pool: 192.168.1.0/24 - clients are using it through wireless/wired connection. Ok! Here's the catch: I need to separate the users from each other. How i need to do it: by IPTABLES rule [ /etc/firewall.user ]. Ok! "Lou...

I'm just curious. Since last week I have seen the message "Please participate in the Unix and Linux 2011 community moderator election" on both our main site and meta. Today the banner disappears on the main site. Is this by design? What's the logic behind that?

How to make sure that fsck is correcting corruptions while keeping the integrity of file system?? suppose clients are writing lots of files through nfs to server, and there happens something that caused corruption(dirty shutdown/other kernel panic) .. so the current state of FS is not known (wri...

Hi I am investigating tripwire and have stumbled upon something which i am unsure about. in a tripwire report generated after i modified hosts.deny to include an extra # I noticed the inode number changed from 6969 to 6915. I would like to know why this happened. I know inodes are records which s...

"Server": 192.168.1.1 I want to "theoretically" disable that the clients can "ping" each other. Can i use an iptables rule for it? e.g.: iptables -A FORWARD -m iprange --src-range 192.168.1.2-192.168.1.255 --dst-range 192.168.1.2-192.168.1.255 -j DROP Is it true that i cannot filter traffic...

Since flash memory only has a limited number of writes, what tweaks are necessary for installing a Linux system onto flash media so that the OS can run reliably for a long period of time? Some examples of flash memory installations include burning a Linux image onto a wireless router's flash mem...

On my fedora VM, when running with my user account I have /usr/local/bin in my path: [justin@justin-fedora12 ~]$ env | grep PATH PATH=/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/justin/bin And likewise when running su: [justin@justi...

The man page for gnu find states: -exec command ; [...] The string `{}' is replaced by the current file name being processed everywhere it occurs in the arguments to the command, not just in arguments where it is alone, as in some versions of find. Both of these ...

Why are there so many places to put a binary in Linux? There are atleast these five: /bin/ /sbin/ /usr/bin/ /usr/local/bin/ /usr/local/sbin/ And on my office box, I do not have write permissions to some of these. What type of binary goes into which of these bins?

I have been trying to burn a few ISOs lately with no success and have certainly used this hardware in the past, so I am not sure what's going on. I am using DVD-R media (tried multiple discs) which appears to be supported by my drive. Here is the error I received in GnomeBaker on Fedora 14 (64): ...

I've just installed Backtrack on my harddrive (got one), i also got Fedora and Windows 7. However, now i get the Backtrack-GRUB instead of my Fedora GRUB. How do i change that? I got a sda5 containing my Fedora GRUB so it should be easy to 'rewire' - i don't know how tho.

Many a times, I want my colleague to have a look at some code on my system. He will mostly do it at his free time, and will need to login as me. Is there a way I can open a new shell as me, and then transfer the shell to him on his machine, so that he can use it whenever he wants to?

I have an old PC lying around which I've installed Debian 6.0 on. Last night I was trying to SSH in and it wouldn't respond so I pressed the reset button. How can I find out what happened to it? It seems fine now.