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
votes
2answers
7 views

Set sender name in mail function

How can I set sender name and email address using mail command in shell script.
2
votes
1answer
819 views

Build Chromium from source

I'm using Fedora 16 and I've successfully compiled Chromium from source (the first time I compiled something from source) a while back following these instructions: ...
0
votes
0answers
11 views

Change external ip to be the one of a server?

I can ssh from my computer (Ubuntu 14.04) to a RedHat server. I wonder if I can browse webpages in Google Chrome or Firefox using the external IP address of the server? Running firefox on the server ...
3
votes
2answers
33 views
+50

How to find out which process keeps tunnel interface(tun) up?

If I create a tun interface with ip tuntap add mode tun command and force it administratively up with ip link set dev tun1 up command, then the interface itself is always "physically" down: ...
3
votes
3answers
260 views

Why do people call Linux a kernel rather than an OS?

Why do people refer to Linux as a kernel rather than an operating system? To the best of my knowledge, the kernel is one part of the operating system.
0
votes
1answer
24 views

What are the differences between sudo and the use of groups? [on hold]

I know these are tools used for improving security. But what I would like to know is what they are and how they work?
1
vote
0answers
21 views

Splitting files across multiple machines [on hold]

I work in a production support team, and we have 12 servers to ourselves that we use for breakfixing production issues. We currently have a process that we run 3 times a day, and it takes a huge ...
0
votes
0answers
7 views

How can I save all the changes made during operation with SliTaz?

How can I save all the changes made during operation with SliTaz Linux? For example, I installed a program or edited a file and I need, at my next boot, to continue working with it. How can I save it ...
0
votes
0answers
10 views

dpkg: difference between --record-avail and --update-avail

from man 8 dpkg (shortend): --update-avail Packages-file Update dpkg's and dselect's idea of which packages are available vs. -A, --record-avail package-file Update dpkg and dselect's idea ...
0
votes
1answer
47 views

How do UDP multicast behave on Unix?

A Unix expert told me that ip-multicast uses Ethernet multicast (depends on MAC address to spread) instead of IPv4 multicast. Is this true? Does it depend on the kernel or version?
4
votes
1answer
35 views

/sbin/init is shared object?

I know 'init' is first process that is started after the kernel is loaded, but there is an ambiguity for me. If it is a process it must have a binary executable file. However, the following shared ...
0
votes
0answers
3 views

xinput map-to-output 11 VGA1

I have a problem with a monitor setup. I use two monitors 15inch and secondary 19 inch. With 15inch I also use a touchscreen. I have to map touch events to 15inch monitor with command: xinput ...
0
votes
0answers
26 views

Dental clinic management software for Linux

Is there any (preferably FLOSS) dental clinic management software for Linux? If not, is there any non-FLOSS software which could be used without any fees? Wine might be used provided the software ...
1
vote
1answer
856 views

Trouble switching from DHCP to a static IP on Kali Linux

When I installed Kali Linux 64bit, I forgot to set up a static IP address, and now DHCP determines my address with my router. I have already modified /etc/hosts and /etc/network/interfaces to declare ...
1
vote
1answer
1k views

SMTP connectivity issue in Zenoss (“Connection unexpectedly closed”)

I am using Zenoss for monitoring purpose. I have been using its mail service for a long time. Suddenly my mail service in zenoss stopped and started showing <class ...
0
votes
0answers
6 views

Centos 7 - where is jfx library for openjdk8?

I have centos 7.1. And I installed openjdk8 and openjdk-devel8. However, when I tried to compile in netbeans my jfx application I get package javafx.* does not exist. After some investigation I see ...
5
votes
2answers
78 views

Converting ext2 to ext4

I have a file-server with three disk's that are ext2 file-systems, is it possible to change/convert these to ext4 which have much improved characteristics, while data is on the disk's and without ...
0
votes
1answer
114 views

Globally change terminal background in centos 7

This has been frustrating me. I've done a ton of googling, can globally change text in terminal using .bashrc, but I cant figure out how to change the white background to black. Going to terminal ...
2
votes
1answer
18 views

Why does btrfs refuse to convert metadata to RAID1

I created a single-device btrfs filesystem. According to the btrfs wiki article on using multiple devices, I should be able to convert that to RAID1 using: btrfs balance start -dconvert=raid1 ...
11
votes
3answers
23k views

How can I benchmark my HDD?

I've seen commands to benchmark one's HDD such as this using dd: $ time sh -c "dd if=/dev/zero of=ddfile bs=8k count=250000 && sync" Are there better methods to do so than this?
2
votes
0answers
41 views

mdadm Software RAID1 with GPT on Debian 8.0 amd64 - Does not boot on disk removal [on hold]

INTRO: I have spent countless days attaching/detaching MOLEX->SATA power cables, rebooting machines and trying hundreds of edits and commands. I am on the verge of desperation and desperately in need ...
0
votes
0answers
57 views

SSH - Command Not Found [on hold]

I am using the 1and1 unlimited hosting package (linux) which comes with ssh accesss. I am trying to install a Teamspeak3 server as outlined in the following two tutorials. ...
0
votes
1answer
6 views

Centos 7 - no network adapter

I've just installed centos 7.1 (64 GUI). During installation it showed me no network device (screen where people set languages etc) - I was suprised but continued installation. When I started centos ...
0
votes
1answer
35 views

macbuntu - is it a linux distro or a desktop or a theme? [on hold]

These might be very basic newbie questions (and if it is too basic, I would be happy to remove this post). After 25+ years of using various versions of Windows, to experiment with non-Windows OS, I ...
0
votes
1answer
20 views

MySQL: connection refused…coudn't find mysqld.service

I am trying to install MySQL onto a Fedora 14 VM. I successfully installed it using yum install mysql mysql-server after which I tried to start it with systemctl start mysqld.service which ...
0
votes
0answers
35 views

Speed issue in copying files from one host to another

I have at home two centos boxes: Box A - centos 6.4. gui version Box B - centos 7.1. minimal version. They are connected to 100Mb router (both boxes have 100Mb network adapters). Box B has software ...
0
votes
1answer
941 views

Unable to mount root fs over NFS

I am attempting to set up the first (of many) Raspberry Pis running Pidora (a Fedora Remix) to boot from an NFS share. It is my goal to eventually place a dozen or more Raspberry Pis in the datacenter ...
0
votes
0answers
23 views

Can we delete or reduce allocated space to mounted filesystem?

Can we delete or reduce allocated space on an already mounted filesystem? I have already mounted or allocated 4 Gb space for a particular filesystem, but I need to reduce the allocated space to 1 GB. ...
0
votes
2answers
2k views

Linksys AE3000 install on linux

I bought a Linksys AE3000 wireless adapter hoping I could use it on my Ubuntu 12.04 box. I found a website that walked through using it, but it didn't work. I edited rtusb_dev_id.c to add: and then ...
0
votes
2answers
712 views

Installed Linux, now Windows doesn't boot anymore

I had a working Windows 8.1 which I used regularly. Today I needed Linux, so I chose Ubuntu and installed it from a bootable flash drive alongside Windows. Everything worked well, I could choose which ...
0
votes
1answer
612 views

VPN Setup Errors

I'm trying to install a VPN on one of our servers for use within my campus so that we can play some games, but I appear to be getting errors when I try to connect, as shown below. Not quite sure about ...
11
votes
3answers
442 views

Fork vs Clone on 2.6 Kernel Linux

I have some confusion regarding fork and clone. I have seen that: fork is for processes and clone is for threads fork just calls clone, clone is used for all processes and threads Are either of ...
0
votes
1answer
35 views

xhost: unable to open display; not able to run oracle GUI runInstaller [on hold]

Getting following error during run of installation: dm01dbadm02.cdsiexa.net:oracle:/dev/shm/GGEXTR/fbo_ggs_Linux_x64_shiphome/Disk1 >ls install response runInstaller stage ...
9
votes
2answers
1k views

How do I set up an encrypted swap file in Linux?

How do I set up an encrypted swap file (not partition) in Linux? Is it even possible? All the guides I've found talk about encrypted swap partitions, but I don't have a swap partition, and I'd ...
2
votes
1answer
43 views

Is it possible to make Linux save changes made to external harddisk imediately they are made?

I have recently installed Linux Mint on an old laptop. I wasn't a Linux user before. Using MS Windows, I have developed a bad habit of unplugging the external hard drive without ever safely removing ...
0
votes
0answers
29 views

Getting Error in Dependency Resolution during installing vlc media player on centos7?

I was trying to install vlc on centos7 using yum install vlc as root user, But didn't succeed. I think previously I install wrong repository. I am getting following error. Following is only part ...
2
votes
2answers
5k views

No rule to make target `include/config/auto.conf', needed by `include/config/kernel.release'. Stop

I am working on petalinux, a linux port for Xilinx FPGAs called Zynq. The tool that I am using is petalinux-config. This opens a GUI where I can select various options, such as compress kernel, ...
0
votes
1answer
13 views

Error while trying to connect 2 pcs in lan

I'm trying to connect two PCs in local network and am having difficulties: not that information you need, so I will put some, if I can put it need more: pc1: OS GNU/Linux Mageia pc2: OS GNU/Linux ...
1
vote
0answers
25 views

What does an inode for a socket contain?

I read somewhere that the inode for a TCP socket would contain the buffer space. Is that true, and if so, does it mean that the inode contains a memory address for the buffer space used by the ...
6
votes
2answers
781 views

Asus X101H - Touchpad not recognized (want to disable while typing)

I have been struggling with this issue for a while and have done an exhaustive search for answers here and elsewhere before posting this question. On my Asus X101H, the touchpad is not recognized as ...
-2
votes
0answers
23 views

Linux routing and packet forwarding accross 3 subnets and 3 internet connections [on hold]

I have my trusty Linux router that has 3 NICs for 3 internet connections (Comcast, Verizon, and a T1), 1 NIC for internet facing servers, and the last NIC to connect the rest of the campus (over 300 ...
1
vote
1answer
20 views

Permanently magnify the content displayed in Firefox

I'm using Linux Mint 17.1 MATE. On of the users of the computer have troubles with eyesight and seeing very small text. I increased the DPI of the whole text in RMB > Change Desktop Background > ...
0
votes
1answer
903 views

How to disable automatic updates in CentOS 7?

CentOS Linux release 7.0.1406 (Core) / Linux 3.10.0-123.13.2.el7.x86_64 Last week, I noticed that when I tried to restart, there was an option to Install Updates & Restart. I do not recall ...
1
vote
1answer
31 views

Host linux distro without GUI?

I saw this video on Youtube: Run Kali Linux on Android The phone uses the app: Linux deploy, which uses the phone to host the distro, but there's is no GUI. The only way to connect to Kali, is by ...
1
vote
1answer
44 views

Using single command to find NIC speed

Do you know a single line command to capture NIC speed of the primary interface of the server. For example, for eth0 Get hostname using uname -n Get its IP using nslookup `uname -n` Search for the ...
1
vote
0answers
29 views

dhcp ipv6 dynamic prefix delegation

I'm trying to setup Linux-based home gateway with IPv6 support. IPv4 configuration is finished and I'm using IPv4 NAT, ISC DHCP for addresses allocation, PowerDNS for local DNS setup, PDNS recursor to ...
3
votes
3answers
3k views

How do I deploy Firefox Bookmarks for all users in the network?

I have a bash-script for installing Firefox which is downloaded and executed from every client workstation in the network. The script is on the server and all workstations are running Ubuntu. Now I ...
0
votes
1answer
10 views

crypto kernel module not available on Raspberry pi 2 (linux 3.18.11)

I'm trying to use dm-crypt on my Raspberry Pi 2 with Raspbian (debian) to open a trueCrypt volume, but i get Required kernel crypto interface not available. Ensure you have algif_skcipher kernel ...
0
votes
1answer
15 views

Why is smbpasswd located in samba-client package?

[root@localhost data]# yum provides smbpasswd samba-client-4.1.12-21.el7_1.x86_64 : Samba client programs Repo : base Matched from: Filename : /usr/bin/smbpasswd [root@localhost data]# yum ...
6
votes
1answer
611 views

Can capabilities be used in scripts without setcap'ing the interpreter binary?

Right now I'm using cap_net_bind_service MY_USERNAME in /etc/security/capability.conf. Now I just need to set cap_net_bind_service+i on the interpreter of my favouite scripting language to be able to ...