Questions specifically about Linux but not specific to a particular distribution. If the question could apply to any Unix-like system, specify your Linux distribution in the body of your question but do not use the /linux tag.

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2
votes
1answer
23 views

How would an administrator of a system prevent himself access to a file for 24 hours?

How would a single administrator go about locking himself out of a file for 24 hours? Rules: The file cannot be renamed or moved. The file is not an executable or system critical. Root access has ...
1
vote
0answers
5 views

NUL entry in syslog?

My servers went down on the 30th. It just came back online today. At first I thought it was the router because the router the server is connected to is a bit squirrely but when I checked syslog I have ...
0
votes
0answers
12 views

4.2 kernel build, missing version.h

I have installed a 4.2 vanilla kernel on Kali Linux 2.0 and prepared the kernel source with 'make clean prepare' I then copied the source to the /usr/src/linux-4.2 directory. And this is symlinked to ...
0
votes
0answers
4 views

Gnome doesn't start(is dead)[Debian Jessie]

Everything was working fine. I just updated some files on my computer. I turned off my PC, but when I tried to run it again it took my to a black screen and reported a few errors before that. I found ...
0
votes
0answers
8 views

install AVG free edition into Amazon Linux AMI

I was trying to install AVG free edition into Amazon Linux AMI. It looks like it installed, but I could not start the any avg service. The command I used to install AVG is sudo yum install ...
1
vote
2answers
21 views

figure out ip addresses of all the machines remotely?

I have around 40 machines and I want to know what are their IP Address. One way is to login into those boxes and figure out their IP Address by using ifconfig command but is there any other simple way ...
0
votes
1answer
9 views

ssh -> screen -> ssh - how to kill remote screened ssh without killing original ssh session

I keep a screen session running on a dev box at work, and I ssh into my dev box and resume my screen session while I'm at work. From there, I hope to other machines. Occasionally, I find myself ...
0
votes
0answers
26 views

Desktop wallpaper not showing in Kali Linux 2.0

I have just updated my Kali Linux to 2.0 using the official sources. Everything seems to be fine when I log in, but instead of the desktop wallpaper I have just a white screen. When I enter the ...
0
votes
0answers
8 views

Linux SAR vs SS commnad to fetch network information

In one of my tool I need to collect network information from system, in present I am using command ss -pant just now I came to know ss -n DEV OR ss -n EDEV can also serve something similar, having ...
0
votes
1answer
17 views

Why does systemctl start docker with different arguments

I'm running an instance of VMware's Photon distro, which uses systemctl. I want docker to use a TCP port so I can play with the REST API. I used 'systemctl stop docker' and the service stops. I ...
7
votes
2answers
73 views

How to watch films/images without X?

I'm wondering if there is a way to watch films or images without running X server. I'm not using login manager - I log in to tty and start X server manually. Hypothetical situation: I log in, but ...
0
votes
0answers
21 views

Use iptables to redirect **all* requests, even DNS-unsolved domain?

Context: With iptables, I redirect all the traffic - incoming at port 80 - to a distant server IP (X.X.X.X). I aim that anywhat you write in the urlbar of browser, you get X.X.X.X. IP That works ...
0
votes
1answer
87 views

What do these commands do?

I have been working at this company for around 8 years now and something that has always puzzled me is that we have a software supplier who often connects to our network to provide user support on ...
-2
votes
2answers
27 views

What is the default path of newly created tar archive?

I created tar archive using following command: tar -zcvf archive-name.tar.gz directory-name After this operation, where that tar.gz is located?
0
votes
0answers
10 views

how unshare -i/-p/-U and -r works in realtime

Can anyone give examples of unshared command for -i, -p, -U and -r options. I got only -m and -n examples to test my code. And please mention any test cases to test IPv6 for unshared too. Thanks, ...
1
vote
0answers
11 views

Different behaviour over WIFI and LAN-Ethernet when connecting via VPN

I have some problems getting my internet connection working over the LAN, meanwhile over the WIFI, everything seems to work nicely with my Ubuntu 14.04 LTS machine. First thing I do is connecting to ...
1
vote
3answers
35 views

not able to execute multiple commands on multiple linux machines?

I have around 50 ubuntu machines on which I need to run below commands: sudo apt-get install htop sudo scp -r todd@machineA.host.com:/home/todd/pip /tmp/ sudo apt-get install python-pip sudo pip ...
0
votes
2answers
14 views

How to foword firefox graphics from remote to local system?

I have installed CentOS7 in virtualbox through vagrant. Both guest and host operating system is CentOS7. Guest operating system is minimum installation of centos7 with no graphics. On both system I ...
-1
votes
1answer
30 views

Why readdir() only reads 32K of directory entries at a time?

readdir() only reads 32K of directory entries at a time. Why does it read only 32K entries? Is it dependent on buffer or any other parameters? Can I change that value so that I can read as many ...
-1
votes
0answers
9 views

control and data flow between 2 linux machines [on hold]

I am doing a project on R-car H2(automotive SOC) in Linux platform. I would like to know how the data and control flow between two Linux machines is, if am using two such boards. Can I get the ...
0
votes
1answer
11 views

Manjaro Linux — Can ONLY log in from root account

First time Linux user. Treat me like a complete idiot. Installed Manjaro on VMWare. I'm required to get into this whole Linux thing for college. First problem: Created user account from root. ...
2
votes
0answers
22 views

Random pieces of ancient hardware not working together (Mac G5, Sun network adapter)

This is probably some kind of weird esoteric hardware combination but it's not why I did it. It's just what I had lying around. I have a 2x 2ghz Mac G5 and I can't really bring myself to part with it ...
3
votes
0answers
35 views

How to shrink root filesystem without booting a livecd

I find myself needing to rearrange a system's partitions to move data previously under the root filesystem into dedicated mount points. The volumes are all in LVM, so this is relatively easy: create ...
0
votes
0answers
16 views

isolinux.bin is missing

I want to build a debian live CD and live USB image. It seems as if I need the following file: isolinux.bin I use following tutorial: ...
4
votes
0answers
31 views

Where in GRUB2 source code is the handover/jump to kernel code?

I'm looking for the line of code where GRUB2 finally jumps to kernel code and thus hands over execution? I guess it's in an assembler file since this is very low architecture stuff. I looked at the ...
3
votes
0answers
22 views

How to obtain mouse events from the kernel when X is active?

When switching to a virtual terminal on my system, The kernel successfully delivers mouse events to a generic input event interface -/dev/input/event6 in my case- as well as legacy interfaces mouse1 ...
0
votes
2answers
48 views

Where is the latest source code of man command for linux?

I'm looking for the latest source code of man command, the version in my Linux is pretty old(v1.6f), but I failed after googling a while. I mean the latest source code of man, not man-pages but the ...
-1
votes
0answers
15 views

Can't locate Vim folder anywhere on linux mint system

I'll try to keep this short. I've been trying to install YouCompleteMe and have had a bunch of trouble, so consequently I have installed and uninstalled vim a few times. Now my problem originated ...
1
vote
1answer
17 views

How to install drivers for integrated intel graphics?

I am building a minimal Debian system. I installed Debian Wheezy with the netinstall iso, and selected to install only basic system utilities, no desktop environment. The computer that is running this ...
-1
votes
0answers
39 views

How can I make a Linux system output a bell sound when no packet is received before the next packet is transmitted with the ping command?

This is easy enough on OS X. I just use ping -A example.com and it works just fine. (Note the capital "A".) But it doesn't work like that on Linux. On Linux, the manual page reads as follows: ...
1
vote
1answer
18 views

Does Linux use GPT flags?

As seen below in output of parted, Windows 8/8.1 seems to use flags in GUID partition entries: I guess that for example partition with hidden flag is not shown in Windows Explorer. However, does ...
0
votes
0answers
14 views

Linux macvlan add MAC to VLAN

Is there any way Linux behave as a switch Layer 2? I have the idea of making the MAC will automatically be ditched a client to a particular VLAN. Likewise the switches are working. Examples. ...
-1
votes
0answers
57 views

How to read/interpret a hexdump file?

I have a file which has an extention of .tax2014, it's a turbo tax file. When I go to open it in a text editor like sublime text I see a hexideciaml dump of data. Example: 9540 4525 6051 095c 5402 ...
0
votes
0answers
7 views

Color profile change seems to have no effect

I'm using a machine with both, Windows (10) and Linux Mint + Unity installed. Colors on Linux look quite strange and poorly calibrated, but everything looks fine on Windows. I was assuming that my ...
0
votes
0answers
39 views

Disable VGA port via GRUB in Linux

I want to disable VGA port of my hardware by making changes in the GRUB. How can I do this? I am using Red Hat.
0
votes
1answer
23 views

logrotate not compressing files as expected

With the logrotate config. below I was expecting the program to start compressing log files after creating the first backup file. Instead I am seeing this: [root@host ~]# ll /var/log total 1.2M ...
0
votes
0answers
9 views

Network Booting : How to boot an RHEL or Linux Machine through network [on hold]

I want to know how to boot a Linux driver through network, what are the pre-requisites needed for me to use network booting. I have the Mac address of Machine.
0
votes
0answers
13 views

Linux 4.1.6 Radeon UVD Not Responding

I've seen the same problem before version 3.19, could not remember since when, but it seems to disappear on version 3.19. But when I compile version 4.1.6 using 3.19 config, the problem came back. ...
1
vote
1answer
34 views

Checking how long a user has been logged in

Is it possible to check for how long a user has been logged in? Or when the user logged in on an Unix/Linux system? I logged in as another user on my system a while ago and I would like to now how ...
0
votes
0answers
17 views

Strange Copy/Paste issue into Virtual Box

When I copy a command from Evernote on the Mac host into the CentOS (also tried Fedora and openSUSE) VM the command will not work. If I type in the same exact thing manually it will work. This ...
0
votes
0answers
26 views

Parent mount becomes inaccessible after mounting child into subdir?

Im installing arch. Upon installation, after partitioning my drives, right when I go to chroot to begin the fun stuff, I get an error mount:mount point mnt/etc/resolv.conf does not exist chroot: ...
-1
votes
0answers
14 views

Kali => ssh_exchange_identification: Connection closed by remote host [on hold]

I'm using Kali Linux to connect to a server remotely using SSH, it used to work out, but suddenly I got the message: ssh_exchange_identification: Connection closed by remote host Even though I've ...
1
vote
1answer
22 views

Use existing encrypted directory as home directory

In the past, I installed Ubuntu 12.04 with /dev/sda4 mounted as /home. I encrypted my home directory. Today, I erased all the partitions except /dev/sda4 and I installed Xubuntu 14.04 on a new ...
-3
votes
0answers
24 views

No such file or directory [on hold]

I have a problem when set up IDE Netbeans (Desktop) in Linux(Ubuntu) from Terminal this message is appear please help me to solve it thanks
0
votes
0answers
10 views

ERSPAN encapsulation

Is there a way to ENCAPSULATE traffic into an ERSPAN tunnel without using a cisco device? What if I wanted to source ERSPAN traffic from a Linux host instead of a switch?
1
vote
1answer
62 views

How to know which programs support streaming I/O

As I understand it, programs that support streaming I/O can work with files more than the size of the memory. Is this correct? Is there a way to know which programs support streaming I/O?
0
votes
1answer
23 views

Keyboard glitch Ubuntu 15.04

Have been cleaning my laptop keyboard and now on a single button press multiple symbols are inputed. For example r => 65RGFVT + turns on CapsLock o => 9ol.p ... Has anyone else experienced ...
0
votes
0answers
7 views

Installing foreman 1.9 configuration help

I can't seem to find the answer that I am looking for so any help here would be hugely appreciated. I am doing a POC with foreman 1.9 on a CentOS7 server. Our infrastructure as it stands right now as ...
-1
votes
1answer
18 views

How do i unlock my Thinkpad, when it says “windows resume loader”, but it won't let me touch any keys (no keys work) [on hold]

My Thinkpad is locked; it won't seem to let me do anything; nothing works; it just says “windows resume loader”, It gives me two choices, and the ENTER button doesn't work to choose anything.
1
vote
1answer
22 views

fstrim “the discard operation is not supported” with ext4 on LVM

Attempting to run fstrim on my root partition (which is ext4 on a LVM logical volume, single physical volume—an SSD supporting TRIM) produces an error: fstrim -v / fstrim: /: the discard operation is ...