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
6 views

/etc/fstab - simple fstab file doesn't work, but manual mounting does

I have a simpe /etc/fstab file to mount seperate/usr and /home partitions, as well as some partitions shared with Windows. A few days ago, it appearently stopped working - a normal boot results in a ...
0
votes
1answer
21 views

linux + send wall message only to the specific user

As all know , we can send broadcast message to all users on Linux machine But how to send message only to the specific user? For example #who rodegc pts/1 2015-05-04 04:23 (10.4.72.1) ...
1
vote
2answers
49 views

What is the most effective way to recognize which virtual environment runs no a machine we have been given acces to?

Suppose I have logged in through SSH to a given Linux machine, knowing nothing about it. How can I quickly check what virtual environment (VMWare, VirtualBox, LXC, etc., if any) is currently runnig ...
-1
votes
2answers
15 views

Set sender name in mail function

How can I set sender name and email address using mail command in shell script.
0
votes
0answers
14 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 ...
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
12 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
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 ...
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 ...
4
votes
1answer
36 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 ...
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
0answers
58 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
36 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
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
0answers
36 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 ...
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 ...
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
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 ...
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 ...
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 ...
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?
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 > ...
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 ...
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 ...
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 ...
-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 ...
0
votes
2answers
30 views

What is an adequate backup strategy for Debian system with a simple database? [on hold]

I would like to know a suitable backup strategy for a small business running a simple database. The whole system operates from a single local computer with one internal hard disk. I have already ...
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 ...
-3
votes
0answers
28 views

using text browser on linux to display proxy information [on hold]

I have this question on my project , and can't how can be answer it , could you help me? how can store proxy information Permanently for a text mode browser such as links? I want steps , if you can. ...
0
votes
0answers
7 views

Add Disk Google Cloud

Sorry by my english. I have this situation: 1.create a instance, in google, this load with 10GB. 2.add (in google cloud) a disk persistent with 200Gb I need save all my websites in the disk ...
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 ...
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 ...
1
vote
0answers
15 views

NFS stale mountpoint error

How to check nfs stale mount error on linux , Do I need to cd to the mountpoint and do ls to check output as ?--------- ? ? ? ? ? Is there any file where it gets ...
0
votes
2answers
20 views

Analyse high load root cause

This is a cents 5.7 32bit VM running inside a vmware 5.5. host. I see high values of load average with low CPU usage. The VM has 4 vCPU’s and load sometimes reach 20. When I run vmstat I see high ...
11
votes
3answers
443 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 ...
-1
votes
0answers
28 views

Custom Command not found after sourcing .bashrc [on hold]

I wanted to add a function that could create custom alias so I added the following to .bashrc function addalias { echo "alias $1='$2'" >> ~/.bashrc } I then ran source .bashrc I tested ...
1
vote
0answers
6 views

What would be the *right* way to use netctl on a read-only root filesystem

I am attempting to use a read-only root filesystem, but am having issues with netctl, since it creates and manages systemd service files as a part of its normal operation. I have a separate partition ...
2
votes
1answer
23 views

Centos 7: /dev/md/root instead of /dev/md0

I have in mdadm.conf the following: ARRAY /dev/md/root level=raid1 num-devices=2 UUID=331de03d:8ba39777:3b664baf:36366f33 But here is mdadm.conf example with the following: ARRAY /dev/md0 ...
0
votes
2answers
24 views

Raid devices are mounted with different UUID

Centos 7.1 64. This is what I have: Two raids, but not md0 and md1 [root@localhost]# cat /proc/mdstat Personalities : [raid1] md126 : active raid1 sdb2[1] sda2[0] 974711616 blocks super 1.0 ...
0
votes
2answers
39 views

set library path for current script [on hold]

How can I set the library path for the current script that's running? I mean I don't want to list a new path for the libraries in a textfile. I tried it using export LD_LIBRARY_PATH=$(pwd)/lib/ This ...
-3
votes
0answers
23 views

Read multiple inputs then store that in an array or variables, then print the values from that array/variables in shell script [on hold]

Read multiple inputs then store that in an array or variables, then print the values from that array/variables in shell script read -p " Enter no. of users : " no_user if [ $no_user -gt 1 ...
0
votes
0answers
7 views

How to access a WCF SOAP service with wsHttpBinding from Linux? [migrated]

I am trying to consume a WCF SOAP service with wsHttpBinding from Ubuntu. Whatever I try, PHP, SoapUI, Java, I'm running into problems with wsHttpBinding features not being implemented. Changing it ...
0
votes
1answer
140 views

Apache and php not working child pid xxx exit signal Segmentation fault (11)

After making a change to my php.ini file I got the error messages as shown below. vim /etc/php.ini ; Maximum amount of memory a script may consume (128MB) ; ...
6
votes
3answers
113 views

Get files with a name containing a date value less than or equal to a given input date

One of my folders contains files in the following format: 3_20150412104422154033.txt 3_2015041211022775012.txt 3_20150412160410171639.txt 3_20150412160815638933.txt 3_20150413161046573097.txt ...
-1
votes
0answers
6 views

rpm package not updating as I update the spec file

I have some statement the %post section of my rpm spec file of the form echo "printing A" I updated the spec file to make it "printing B" but the new rpms I'm creating still echo "printng A" What ...
0
votes
2answers
37 views

How to grep from command line for theses multiple strings?

I need to run a command to grep one of these strings from command line as web host disabled account to run website from browser until virus files are removed and I managed to collect few strings that ...