Linux refers to the family of Unix-like computer operating systems using the Linux kernel. If your question is about a certain distribution only, use a more specific tag.

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5
votes
3answers
11k views

Automount sshfs using fstab without mount -a

Please consider following fstab line (line breaks for readability): sshfs#user@192.168.1.123:/home/user/ /home/user/Server/ fuse ...
1
vote
0answers
7 views

tcpdump - rotate capture files using -G -W and -C

I'm looking to be able to capture a rotating tcpdump output which captures 30-minutes worth of data, into 48 files, cyclically. The man implies this should be possible, but my testing doesn't seem to ...
0
votes
1answer
44 views

ssh key exists on remote, but still prompts for password?

Why is this happening? $ ssh-copy-id me@server /usr/local/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed /usr/local/bin/ssh-copy-id: ...
0
votes
1answer
2k views

Why is there Permission denied in .conf files in Linux Kali Operating system?

Why is there Permission denied in .conf files in Linux Kali Operating system? to enabled eth0 in linux kali. because no wired connected shown. i tried linux command as bellow ...
4
votes
3answers
5k views

How to interpret the output of netstat -o / netstat --timers

netstat -o includes some timer information in the output but I haven't found an explanation of the output in the Timer column anywhere. Can anybody explain this or point to an explanation? This ist ...
3
votes
5answers
10k views

Running scripts from another directory

Quite often, the script I want to execute is not located in my current working directory and I don't really want to leave it. Is it a good practice to run scripts (BASH, Perl etc.) from another ...
1
vote
1answer
111 views

Cannot change brightness on Samsung rv411 laptop computer

I am using a Samsung RV411 s03 laptop computer. I have tried several linux distribution on my laptop computer; I have got a problem with them which is the brightness of the monitor cannot be changed ...
1
vote
0answers
14 views

bad text alignment with sendmail

I'm trying to send a mail and in the text of the mail put like these: xxxxx yyyyy zzzzz ----- ----- ----- 2424 324 23432 I send the email with sendmail but it shows me: xxxxx ...
1
vote
2answers
30 views

Backup remote Linux from Windows. Recognize symbolic links

I'm trying to backup a Linux Server from a Windows 7 Laptop. The Problem I'm facing is that backup solutions for Windows do not recognize Linux symbolic links. The backup clients just follow the ...
-2
votes
0answers
20 views

router firmware back to its factory default

i upgraded TP-Link TL-WR841ND v7 to ddwrt but wireless is not working so i switch it back to its default firmware. i tried factory default settings and firmware upgrade back to its default downloading ...
1
vote
1answer
2k views

values set in limits.conf are not working

I set some values in /etc/security/limits.conf as below: * hard stack 204800 * hard nofile 8192 Then rebooted the server. Now the ulimit command still lists some old/default values: # ...
98
votes
8answers
152k views

How do I compare binary files in Linux?

I need to compare two binary files and get the output in the form <fileoffset-hex> <file1-byte-hex> <file2-byte-hex> for every different byte. So if file1.bin is 00 90 00 11 in binary ...
18
votes
4answers
678 views

Linux command line log viewer which allows auto tail AND searching?

I use tail -f in my Linux shell, to view log files, as I like how it auto-updates with the incoming text: I like to see the new stuff come scrolling in. However, I also like the search functionality ...
2
votes
0answers
24 views

Configure firewalld to distinguish home and public ethernet connection

I connect my notebook via ethernet at home and outside. I want to open some ports for services like samba only at home and not somewhere else. How can i let firewalld automatically detect where i am, ...
-2
votes
0answers
9 views

A good patch auditing tool for Linux? [on hold]

I am looking for an open-source tool that can scan a Red Hat Linux server for missing patches and updates. Does the free version of Nessus do this or would I need to buy it? Are there any other ...
0
votes
1answer
52 views

Accidentally deleted all files older than 7 days

A bad written skript located in /etc/cron.daily erroneously executed find * -mtime +7 -exec rm -r {} \; as root user. As a result of this I can no longer login. Beside that the system seems to run ...
0
votes
2answers
384 views

How to install Cygserver

I'm programming in UNIX, so I'm using Cygwin. But functions of IPC does not work on it, just in Cygserver. How can I install it? I'm looked in google and did not find any concrete information. Thanks ...
0
votes
1answer
3k views

ext4 vs btrfs performance on SSD array

I am observing something that I cannot explain. I am trying to come up with a good filesystem configuration using HP P420i controller and SSDs. Out of curiosity I have tried BTRFS (still unstable so I ...
2
votes
2answers
863 views

Linux (Ubuntu) USB Auth

I want to be able to authenticate with PAM using a USB drive with a file on it. I've read about how to do this with a PAM module that reads the specific USB hardware ID of a device, but if the device ...
-1
votes
0answers
14 views

Accidentally deleted dpkg folderr in ubuntu 12.04

I am accidentally deleted var/lib/dpkg folder in ubuntu 12.04 system. Someone please help how to resolve it. Advance thanks.
1
vote
3answers
178 views

What are Linux kernel modules?

I was wondering if someone could explain what Linux kernel modules are to someone who comes from Windows?
1
vote
1answer
3k views

Which process is using a Linux kernel module?

I am trying to run this command: # rmmod nvidia But I get: ERROR: Module nvidia is in use How can I know which process(es) is/are using the nvidia module?
1
vote
1answer
111 views

How Do I Manage Multiple Kernel Modules by the Same Name?

I have a situation where I have two modules both named cxgb3 and both in /lib/modules/. How do I inform the OS which one to prefer? Consider this example: $ find /lib/modules/ -name cxgb3.ko ...
3
votes
2answers
4k views

Skip kernel module at boot

There is a broken kernel module, due to which I can not even load the OS, so I can not delete or fix it. Is it possible to skip this module at boot, using the kernel's parameters or something?
0
votes
0answers
10 views

RHEV / KVM - backuping of running VMs

Is there any way or known script / how-to / tools to backup running VM (using VM snapshot and than merging snapshot file with VM disk)? I need to backup running KVMs without downtime and simple copy ...
0
votes
1answer
9 views

how to get the missing file sha256?

I am trying to run some script on Linux Ubuntu Precise Pangolin (12.04), x86_64 machine, and it complains that the file /sbin/sha256 is not there. I can setup in the script, where that file is, so ...
-1
votes
0answers
46 views

RHEL reboot takes 26 hours [closed]

I am working as a developer in a website development firm. We have many servers and each one is attached to the load balancer. Yesterday (Apr 19), one of our Linux proxy server's CPU load were ...
1
vote
3answers
54 views

SSL Root CA certificate is not recognized, although present in the trust store. Why?

Background: Ubuntu Server 14.10 64-bit on aws.amazon.com/ec2 Cheap PositiveSSL server certificate from COMODO 1 server certificate, 2 intermediate CA certificates and 1 Root CA certificate as ZIP ...
1
vote
0answers
32 views

How do I repair Android DHCP issues? [migrated]

My phone plan comes standard with a lot of data and as a result, I've been regularly using the Mobile Hotspot feature built into it, on my laptop. The phone is a Samsung Galaxy S5 and is rooted on a ...
3
votes
3answers
31 views

No path, or command history through SSH when logged in to server as someone other than root

When I SSH into a server, as anything other than root, it only shows a $ and not the path. It also won't allow me to press the up key and see the command history when I don't SSH in as root. How do I ...
0
votes
1answer
3k views

What do these error messages mean and how to fix it?

============================================================== actually I figured out this is an issue of intel video driver:http://lkml.indiana.edu/hypermail/linux/kernel/0902.3/01703.html ...
1
vote
1answer
47 views

Ubuntu AMD Graphics card Drivers (AMD r9 275)

I have a Lenovo y40-80 with an AMD Radeon R9 275 graphics card. I installed the AMD Catalyst Control drivers on Ubuntu Gnome, but in my settings it says my graphics card is a TROPO XTX (6820). Here ...
3
votes
4answers
501 views

Launching programs with GUI without display manager

I've heard that there is a way launching programs with graphical interface without display manager - straight from terminal. Is this for real and if so, how can I do that?
0
votes
1answer
16 views

Two Vagrant VMs caused network issues

It seems that when I make a new virtual machine, my private networks are not reachable from the host. I assigned different IP addresses to both, and included them in my /etc/hosts file, however I'm ...
0
votes
1answer
1k views

Issues with Network interface card in CentOS 7

I have just installed centOS in machine having 4 NICs. CentOS detected 2 of them but two or them are still missing from network manager. Both two of them are of same kind, I suspect that it's a driver ...
36
votes
9answers
41k views

How can you see the actual hard link by ls?

I run ln /a/A /b/B I would like to see at the folder a where the file A points to by ls.
0
votes
2answers
3k views

Creating a USB stick for installing centos 6.x using DVD1 and DVD2 iso files

First, we create 2 partitions on the USB stick that is let's say 16GB. first partition is let's say only 1GB and the second partition is the rest of what is available. after we "w" write the ...
1
vote
0answers
20 views

Ubuntu as a separate OS v/s Wubi

Due to some hardware problem, I am unable to use both my DVD drive and the bootable USB stick to install Ubuntu as a separate OS alongside Windows 7. I came across WUBI. I was wondering if there would ...
31
votes
3answers
3k views

Can history files be unified in bash?

I routinely run multiple screen sessions on my Linux desktops and servers. A problem with this is that when I grep through my command history, I find I issued a command in a different session, and ...
0
votes
2answers
25 views

How can I create a shell script shortcut?

I'm using Debian and there's a user who has a script called start.sh. I want the user to be able to call the script by typing application ... instead of ./start.sh ... I've been playing with symbolic ...
1
vote
1answer
52 views

ubuntu 14.04 trusty: 'apt-get install' silently refuses upgrade package with unsatisfied dependencies

I think, this question is about the same problem. That question is marked as answered, although the problem isn't solved, so I open a new question with little bit more details. Short description: ...
0
votes
0answers
20 views

Very high write latency with Intel 530 180GB SSD and Ubuntu Server 15.04

I just put together a new "server" with an Intel NUC5i5MYHE, an Intel 530-series 180GB m.2 SSD, and 16GB RAM. I am having a rather severe problem with writes to the SSD having very high latency. The ...
0
votes
1answer
15 views

Slow SMTP connections to Google memory overload ( Controlling Exim timeouts)

Our organization has several servers that generate and send out lots of emails (we're not spammers, it's legit email to users who have asked for it). Exim on these machines is configured to only try ...
3
votes
2answers
5k views

Monitor Postfix outgoing mail delivery

I'm using GNU Mailman with Postfix to run a mailing list, and would like to monitor the delivery of outgoing mail, that is: for each mail sent from the list, check whether a 250 (OK) message was ...
0
votes
0answers
26 views

Can the kinect 2 be used in linux?

I know there are open source implementations available to program Kinect version 1 applications in linux, can Kinect version 2 be used in these as well. or are there any other methods to use kinect v2 ...
0
votes
0answers
23 views

How to install Windows 8 after Linux with UEFI

I have an Asus Zenbook UX32LN with Linux Mint installed on the whole 256GB SSD. How do I install Windows 8 alongside Linux ? The first step is of course to make a new big-enough partition for Windows ...
9
votes
3answers
4k views

How can I register a custom protocol with xdg?

I've been struggling this morning trying to associate an application with a custom protocol, namely emacsclient and org-protocol. I'm calling this protocol from a webbrowser bookmarklet, and I get ...
1
vote
8answers
7k views

How can I move files from Windows to Linux using WinSCP?

I have putty and winscp, but winscp doesn't work in this case because I need to use a command cd ../public in order to enter the directory as I can't find it for some reason. How would I use putty ...
-1
votes
0answers
21 views

Run Java code in Linux Server [closed]

I have developed a code in JAVA in windows with eclipse. I need this code to run in a regular basis(to be added in cron). I don't see Java installed in my server to run this code. Where could i start ...
2
votes
1answer
3k views

Sharing a Windows 7 wifi connection with a Raspberry PI

I have a Windows 7 PC that is using a Wireless network connection that I want to share on the PI. I have a working CAT 5 cable that I am using to connect the Win 7 PC to the PI. I have configured ...