# All Questions

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### Can iptables rules manipulate IP sets?

In iptables-extensions(8) the set module is described and it is discussed that it is possible to react to the presence or absence of an IP or more generally a match against an IP set. However, it ...
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### Check SSE3 support from bash?

Is there a way to check whether or not the current system supports SSE3 from a bash script? I'm currently writing an installer script, and the program in question has an alternate version that takes ...
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### Best filesystem format for Samba between Linux and Windows [closed]

I've made some researches but I don't find what I need. I have a Linux based server (under Debian 7.1) and several Windows computers. On my server I have some HD which I want to use as external hard ...
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### Possible to move boot files?

I just bought an external hard drive that's 1TB. I formatted my laptop and burned Linux to it. The thing is, I also use my hard drive for other things. Can I move these boot files into a custom folder?...
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### How to Test if a file has characters in it?

So i have a part of this code and U want it to output "No such player" if only the names file is empty, i've tried using the test -s command but it gives an output of 0 even if the file is empty or ...
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### Qemu 2.0 Windows guest - mouse stops working (vnc) when using usb-passthrough

I have installed Qemu 2.0 on an Ubuntu Server 14.04 LTS computer. I use Qemu to run multiple virtual machines. One of them is using Windows 8.1 Pro (x64) and is used for back-ups. The guest runs fine ...
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### Trying to automake gnome-terminal

I am on Fedora 20. I am trying to make gnome-terminal. The automake does not find certain packages. I do not understand why. Here is the part I do not understand. checking which gtk+ version to ...
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### mdadm raid 5 missing partitions after reboot

I had a working raid 5 array that had a whole debian install on it (I set it up during a debian install). I'd been using it a couple of days, all was fine, but since I created it during debian install,...
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### What changes occur in the system after a dev adds their own profile?

I am working on building my own profile for portage. I have managed to add my profile and it shows up when I issue: eselect profile list I added an entry in /usr/portage/profiles. The profiles are ...
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### Make XServer ignore the mouseclick that woke up monitor from sleep

I have a ARM-Box with a touchscreen, running a Debian variant. Every time I tap the touchscreen, the monitor turns on, but the now visible application receives a mouse click. Can I tell the XServer ...
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### Is there a way to tell how many times my computer has rebooted in a 24 hour period?

I was doing a 24 hour code-a-thon and had to reboot numerous times and was wondering if there was a way to tell exactly how many the computer was rebooted or crashed.
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### SSH public key won't send to server

I've been struggling with this for a couple hours so any help is greatly appreciated... I have 2x servers both of which I can ssh to with public keys from OSX, no issues at all there so I'm certain ...
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### Library routines in linux kernel

In the linux kernel, there is a section "Library routines" with a snippet shown below: Library routines ---> <M> CRC-CCITT functions <M> CRC ITU-T V.41 functions <M> CRC7 ...
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### Webserver-User has no Shell-Access but needs SSH-Keys or Permission change of directory?

First of all: English is NOT my mother-tongue, so please bear with me if something is not as clean as it should be. So, regarding my previous question and a possible solution I was advised to ask for ...
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### how to update Records using nsupdate?

We know that we can update a record (its IP) by doing these steps: nsupdate server ns.bar44.com zone bar44.com update delete somehost.bar44.com. A update add somehost.bar44.com. 86400 A 10.10.10.1 ...
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Agent admitted failure to sign using the key I'm working on centos6.5(32bit) and I have tried to ssh log in without Password Using ssh-keygen & ssh-copy-id? the steps that I have done: first I ...
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### Window title centered fluxbox

I'd like to center the window titles in fluxbox. Now they are all at the right side. How can I change this option?
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### sed replace misplaces slashes

I have the following code in a LaTeX file: for \emph{service} in \emph{host}.resources: for \emph{file} in \emph{host}.resources: \underline{service}.requires.add(\underline{file}) ...
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### How to check and set “rhash_entries” parameter?

I'm reading this article, and it says: rhash_entries is the size of the hash table. If you don't specify it on the kernel command line, it is computed dynamically based on the memory available on ...
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### What code should I use to download and install my script into a user-writable directory in the user's PATH (without requiring sudo)?

Edit: places where I said $HOME/.bin I should have written$HOME/bin or any equivalent is fine. I.E, any user-writable directory that is in the user's PATH. So I have a bash script which I am ...
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### How to create an executable bash script for these commands?

I wish to create an executable bash script that will run the following commands as root, that is, using sudo su iptables-save | awk '/^[*]/ { print $1 } /^:[A-Z]+ [^-]/ { print$...
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### Microphone not working on Centos 6.5

I have installed CentOS 6.5 on a Dell Insperion with an Intel chip. I first noticed that my microphone is not working on Skype on CentOS although it was working fine with Windows 7 on the same box. ...
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### Cannot install zone on Solaris 11

I am trying to install a zone on Solaris 11. I am using these instructions. I get up to Listing 2 when the error occurs. # zoneadm -z testzone install The following ZFS file system(s) have ...
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### Changing CIFS permissions on FreeNAS?

I'm trying to change some permissions on a folder. I'm running FreeNAS and using the windows permissions settings (not Unix). If I right click the file and go to properties and then security, it shows ...
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### Why is Aircrack-ng able to read and use a .lst file that Leafpad couldn't in a reasonable time?

To make myself a little more clear: I tried opening a .lst file (password list) in Kali Linux. The system was struggling to handle it and Leafpad didn't even start, but I noticed a significant ...
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### Prevent active file removal on an NFS filesystem

I clear my logs using following script - find "." -mtime 1 -type f -print0 | xargs -0 rm -rf But it deletes the active files also and creates .nfs… files instead. Is there any way to prevent ...
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### What is “system time” when using “time” in command line

Im using time to time a Perl script on standard terminal in Ubuntu 14.04. I have read that real time is stopwatch time; the time I, as a user, is spending looking at the program running from I start ...
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### SMART extended offline test validity

Is it possible for the smartctl -t long /dev/sda to complete without error and still the drive fail? How detrimental to the disk's life expectancy is running the test daily/weekly? Thanks!
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### Xorg display issue in a newly installed RHEL6 machine

I installed RHEL6 in a pretty old machine. The installation went perfectly fine and after installation, I did the below steps. Registered the machine with the satellite. Ran the yum update ...
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### How to find all paths not compatible with Windows?

On most Linux filesystems, NUL (\0) is the only invalid character in paths (and / is reserved as the path separator). Windows has a complicated set of rules for valid paths. Rather than fixing paths ...
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### Debian: pulseaudio sink volumes syncing?

Running Debian jessie with pulseaudio, sometimes I would use pavucontrol to adjust volumes of different applications at varying levels. Then when I would forget about it and adjust the volume using ...