Questions specifically about Linux, as opposed to Unix-like systems in general, or to questions about a specific distribution or program.

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0
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0answers
3 views

how get net switch info in soc?

I have a router device. cpu is mtk7620n. mtk7620n have a switch. How can i get information of the switch . swconfig show nothing. i think the switch have no driver. Anybody give me some ...
0
votes
0answers
6 views

How to take incremental backup in tape drive

I am having 1 tape drive and i want to take incremental backup of 5 folder to the tape drive on every friday. But the location of 5 folder and the LTO (wehere it mounted) is different.(both folder ...
12
votes
3answers
170 views
+100

How to find the driver (module) associated with a device on Linux?

On Linux, given: a device, for example /dev/sda, and its major and minor numbers, for example 8, 0, how can I know which module / driver is "driving" it? Can I dig into /sys or /proc to ...
1
vote
0answers
94 views

Possible issues with SSD SATA3 drive

While investigating the issue with my SATA3 SSD drive being recognized as SATA2 (for some reason had to change SATA ports to fix it) I noticed the following messages when I run: $ dmesg | grep ...
1
vote
1answer
19 views

CHROOT: Unable to copy files to jailed users directory from local machine using WINSCP

I have setup a Chroot environment for one of my users called client on my system. I am using WINSCP to connect to my server from my machine using public key authentication. Everything works fine, I ...
5
votes
2answers
222 views

Linux kernel headers' organization

While I was doing some reading on system calls, I did a search for "syscalls.h" to find the header file in LXR. The search results puzzled me. There is a dozen of "syscalls.h" files coming from ...
4
votes
2answers
166 views

Problem when trying to cross-compile an ethernet driver on an old Linux kernel

I'm currently trying to cross-compile a network driver against an old Linux kernel, in version 2.6.27.7 but the compilation fails and prints: make[1]: entering directory « ...
1
vote
1answer
786 views

How to get system configuration information without dmidecode

In order to collect some system configuration information, I have been using dmidecode and the related tool lshw to find the information. This works great on most machines, but I have recently got ...
1
vote
1answer
825 views

Bridge interfaces with Vlan on Linux based access point

I have a Linux based wireless access point. It has eth0 interface for ethernet, ath0 for wireless and br-wan as a bridge between the two. bridge name bridge id STP enabled ...
1
vote
1answer
344 views

Awesome Apache Monitoring

I'm doing some research into how I can collect and graph useful statistics from apache per vhost: Bandwidth Usage Number of requests Errors Busy workers Free workers Queued/Waiting requests Bonus ...
3
votes
1answer
90 views

How can I install Linux on a UEFI system with Secure boot?

My motherboard is a Gigabyte 990XA-UD3 (CPU 1), it's a UEFI -Dual boot, and when I try installing Linux Mint 16 Cinnamon or Ubuntu 13.10 it always bring this error (initramfs) Unable to find a medium ...
6
votes
2answers
3k views

How does cat know the baud rate of the serial port?

I regularly use cat to view debugging information in the console from my FPGA development board over the serial connection, but I never have had to tell linux what the baud rate is. How does cat know ...
-1
votes
0answers
54 views

Debian - how to find out why a lot of services stopped [on hold]

Question: How to find out why services stopped if their logs don't say anything, they just stopped logging. Where does Debian keep logs about services that were killed (for example do to RAM running ...
3
votes
2answers
168 views

Redhat Linux: How to know my system configuration?

I am using Red Hat Enterprise Linux Server release 5.9 (Tikanga). For installation of any application, it is very important to know the system configuration, is it 32 bit or 64 bit system, Installed ...
1
vote
4answers
997 views

Restart MySQL server

I am using MySQL v5.1 on Ubuntu machine. MySQL on my machine used to work. (Running mysql -u root gave me the MySQL command line.) This afternoon, I did the following thing: 1. check active process ...
44
votes
8answers
3k views

Does `sl` ever show the current directory?

For those out of the loop, sl is a humourous command line tool that is meant to trip people up if they mistype ls. When invoked it prints a Steam Locomotive. For example: ( ...
14
votes
3answers
409 views

Move files and change ownership at the sametime

On Linux (Debian, Ubuntu Mint...), Is there any option command or something that I can use to transfer files to another user without having to do : sudo mv /home/poney/folderfulloffiles ...
5
votes
1answer
998 views

Eye-FI SD Card not working with inbuilt card reader

I am tring to get my cardreader to work with and eye-fi SD card. My System is as follow: #uname -a Linux computer 3.2.0-0.bpo.2-amd64 #1 SMP Thu Mar 15 20:46:44 UTC 2012 x86_64 GNU/Linux Debian ...
-1
votes
1answer
32 views

Apache Downloading a lot data, how to find out which script?

Apache Downloading a lot data, how to find out which script? I host a few sites, i noticed a ton of bandwidth being Downloading (not so much when uploading) when the httpd service is running, when I ...
4
votes
4answers
35 views

Rebuild damaged system directory (for example, /lib)

Let's say I have a Linux system, either Debian, Ubuntu, or CentOS, where a user removed /lib, for example. Let's also say that I managed to boot this system with a livecd version of whatever OS it was ...
2
votes
0answers
38 views

USB 2.0 device is not working in USB 3.0 ports

I have a Ubuntu 12.04 system. To that system I have one USB 3.0 port. In this port I am trying use my USB 2.0 device. But every time when I plugged that USB 2.0 device into that USB 3.0 port,system ...
0
votes
1answer
17 views

Using WiFi port as redundant link

I want to use WiFi port of my server as redundant link for copper connection to my home DSL router. My router if SAGEM 2704 with very limited functionality. So practically the only possibility is to ...
0
votes
1answer
591 views

Windows host shares doesn't get mount when I boot into Linux guest in vmware?

I've enable network shares in vmware and I want to share a Windows folder with my Linux guest OS but I don't know where to look in my guest OS? In Linux I've looked into network shares and samba ...
23
votes
2answers
2k views

Why do some Linux distributions still have /dev/ttyS0, ttyS1, etc., even though newer computers don't have such a serial port?

Many new laptop and desktop computers do not have 9-pin/25-pin serial ports. Why do many Linux distributions still contain /dev/ttyS0, dev/ttyS1 device files? Since udev can create the device files ...
2
votes
2answers
262 views

How do I route a spare network interface through an SSH tunnel?

I just bought a Raspberry Pi and I am wanting to route an ad hoc wireless network interface fully through an SSH tunnel that was created using another wireless interface. I want to do this so that I ...
3
votes
1answer
27 views

I can see my LVM but I can't initialize it. Missing UUID of one of the disks

I have had a 2 disk LVM called Data going for about 6 months, and I recently bought a third disk. I installed the disk in the machine, and wanted to format it and extend the lvm onto it, like I've ...
4
votes
5answers
831 views

Faster way to delete large number of files

I have a directory where lots of cached files are getting generated very quickly. Since these are very small files, it is consuming all my inodes very quickly. Currently I am running the following ...
4
votes
0answers
56 views

CHROOT : Unable to view mounted directories

I posted a question on stack overflow, but I was told that my question was more relevant to this section so I thought I'd repost it here. Here is a quick description of what I have done: I have a ...
1
vote
1answer
22 views

Error compiling drivers for Ralink RT2870

Im trying to install drivers for a rosewill RNX-N600UBE wireless card (Ralink RT2870 chipset) on Kali Linux. I downloaded the drivers form their website and unpacked/unzipped them, but now when i try ...
0
votes
1answer
21 views

Creating operating system (OS) user in Oracle LINUX

I am a user with sudo access. To install MySQL, I have to create an operating system (OS) user called MySQL. Can I create a user which also has sudo access on this machine?
1
vote
2answers
185 views

nme for linux target setup fails on debian

I'm trying to run haxelib run nme setup linux To set up NME for the Linux target on my Debian box. Actually Linux MINT Debian Edition, but that shouldn't matter. However, I get the following ...
1
vote
3answers
646 views

PAM login permission denied

I have an OpenSuSE 12.3 machine and can't login to the box either on tty or via ssh. As soon as the user logs in the session terminates and in the message "login [1234] permission denied" is printed. ...
0
votes
0answers
19 views

Compiling sample SFML program problems

I'm trying to compile the first sample program that comes with sfml on Fedora. First it told me that I needed to link all of the libraries properly but then I got it all configured and now I'm stuck ...
5
votes
1answer
28 views

How the network packets are transferred to the memory on linux?

Is there some command or tool for monitoring network packets and how those packets are handled by the memory and than proceeded to the CPU on linux platform? Using tcpdump I can capture many apache ...
2
votes
2answers
101 views
2
votes
1answer
267 views

GDM will not start on boot, unable to login into graphical interface

I am running RHEL 5.8 . SELinux is enabled but in permissive mode. Here are some snippets from /var/log/messages on boot. kernel: type=1400 audit(1360613500.551:6): avc: denied { write } for ...
1
vote
0answers
12 views

How do I manually install the XPM library?

I'm wanting to install SWI-Prolog, however my linux box (more like a tuna can; it's a RasPi) isn't connected to the internet, so I can't just do sudo apt-get install libxpm-dev How can I do this ...
3
votes
0answers
20 views

Are there any canned solutions for running sshd in the initrd?

This is mostly aimed at Debian/Ubuntu, but I feel savvy enough on a variety of distros to be able to adapt the solution for one distro to another. Here's my scenario. There are a few situations when ...
1
vote
1answer
38 views

Issues in XRDP installation on Cent OS 6.5

I already went through the similar issue tracked in Installing XRDP on Cent OS 6.5, however it haven't helped me to fix. I am using MAC and trying to install XRDP in CentOS release 6.5 (64 bit). So ...
1
vote
1answer
210 views

How to reduce ClamAV memory usage?

I'm running a Ubuntu based web server (Apache, MySQL) on a 512MB VPS. This is more than sufficient for the website it is running (small forum). As I wanted to add some protection against viruses I ...
35
votes
4answers
28k views

Limit memory usage for a single Linux process

I'm running pdftoppm to convert a user-provided PDF into a 300DPI image. This works great, except if the user provides an PDF with a very large page size. pdftoppm will allocate enough memory to ...
9
votes
2answers
138 views
+100

On system memory… specifically the difference between `tmpfs,` `shm,` and `hugepages…`

I've been curious lately about the various Linux kernel memory based filesystems. Note: As far as I'm concerned, the questions below should be considered more or less optional when compared with a ...
0
votes
1answer
177 views

LFS 7.4 chapter 6.7: make: gcc: Command not found

I am (again) trying LFS. The version is 7.4 I am stuck at chapter 6.7, where I must run: make mrproper and I get this error: make: gcc: Command not found. But the gcc is there. I also cannot run ...
4
votes
1answer
39 views

Does pipe's link target exist somewhere in the filesystem?

I'm talking about this: $ readlink <(echo test) pipe:[80076194] Is pipe:[80076194] a path to the target or just indication that the file descriptor is connected to the pipe and doesn't exist in ...
1
vote
1answer
262 views

Build Linux and run it (uImage) on the Beagle board - xM

I'm working on some project where I'm using the Beagle board - xM Rev C. Power supply is 5V/2A adapter. My task is porting Linux Angstrom on the board but I have some problems. I have choosen Linux ...
8
votes
2answers
3k views

Is there an alternative to CUPS?

When printing with Linux is there an alternative to using CUPS? After using it for a couple of weeks printing suddenly stopped working. The 'processing' light would come on and that would be the end. ...
4
votes
1answer
397 views

ffmpeg - Merge two audio sources with x11grab, possible?

Currently I'm running with the following setup. ffmpeg \ -i http://pub1.di.fm:80/di_vocaltrance \ -f x11grab -s 1920x1080 -r 25 -i :0.0 \ -c:v libx264 -preset fast -pix_fmt yuv420p -s 1280x800 \ ...
0
votes
1answer
85 views

Update yum fails

I'm using centOS 6.4. I'm getting this error when I use "yum update" in the terminal window. Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=6&arch=x86_64&repo=os ...
4
votes
1answer
342 views

Gentoo Live CD from Hard Drive: No Mountable Filesystems on root after modules loaded

I am attempting to install Gentoo on my PowerPC Mac. I have reached the point where I can boot the Live CD (I have no functional CD Drive, so it is from a spare Hard Drive), but after the kernel is ...
3
votes
2answers
59 views

Tool to force use FILE instead of RAM

I'm wondering why there is no such tool like ram2swap, similar to cpulimit in parts. E.g. There is program daemon.bin. Let's create temporary swap file ( 1 Gb ): % dd if=/dev/zero of=tmp.swap ...