Tagged Questions

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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1answer
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Can’t ping between two virtual machines using VirtualBox host-only adapter in OS X

I am trying to run Kali Linux in one VirtualBox, and a De-ICE machine in another VirtualBox on a Mac (OS X 10, if it matters). I want to use the host-only adapter to connect the machines so the Kali ...
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1answer
95 views

How to password protect a folder on Unix/Linux without encryption?

I've searched a round quite a bit in the past and present for either a builtin feature or program for this, but had no luck. I want to password protect a folder, but do not wish to encrypt it. The ...
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Convention / File Hierarchy for Compiling Source

Background: I have been compiling a lot of source code lately and I am hoping to learn of a convention to organize source code / compiled output. As an example, I have been statically compiling ...
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0answers
12 views

What could be reasons for a file fitting into a ZFS pool at some point, but not the second time after being removed with rm?

My problem is really as simple as follows: I want to put a file into a ZFS dataset after having deleted it with the rm command (even verified with find /path/to/pool_root -name "*" because the ...
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0answers
10 views

Tor Not Running on Server Always?

I have a Perl script that uses Tor for scraping certain data. It was working perfectly and then my script started having issues with scraping. After a bit of investigation, I realized that Tor ...
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1answer
10 views

New window from Gnome search box

On the results from the search box in Gnome 3, you can right click on an icon and choose New Window: Otherwise, if a window already exists, it will focus on that window instead of opening a new ...
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1answer
14 views

Linux/Bash: Create relative soft links to files in directory tree?

I'd like to make links to all files in a directory tree. Which means, create the same directory structure and make the links in them to the respective subdirectory in the original dir. That could be ...
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0answers
14 views

How to Ban an IP address automatically in ubuntu 12.04 when it sends specific packet to server?

I run a game server and someone is attacking with fake players. I want to ban him automatically in Ubuntu V P S. Any IPtables command or program that can accomplish this task? If it's not possible ...
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10 views

How to sync a subset of a directory?

I like to sync two directories on local drives. However, one directoy contains a subset of the files of another one. This forbids me to use classical two way sync tools like 'unison', as they usually ...
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0answers
18 views

What's wrong with this GRUB setup?

I have two hard disks. The first one contains both Windows and Ubuntu installations, but the first MBR boots to Windows and the second MBR boots, in theory, to Ubuntu. This worked fine until recently. ...
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1answer
18 views

cpio VS tar - what the best archive solution in order to compress hundred of directories to one file

in my Linux machine under /var/Recording directory. I have hundreds directories and each directory there are also directories and files include hard links and soft link . I want to compress all ...
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0answers
5 views

make particular service logs to be written in separate file in syslog.conf

One of the service is writting logs by default in /var/log/messages file. I want that service logs to be written other file. Logs in /var/log/messages files are being dislpalyed as below. Nov 20 ...
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0answers
16 views

Root access permission in normal user directories?

Short story; I run a setup as root to install a program, which will create some files and directories in home folder of a normal user. The error is I don't have write permission to it. So I go to the ...
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0answers
12 views

Whois using Tor shows unexpected IP address?

I turn the service Tor on and I use proxychains for my browser. Then I have an IP address, but when executing a "whois" command it doesn't show me the node that Tor is using but some company or ...
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1answer
29 views

linux: how to troubleshoot forwarded port?

My home internet connection has a static IP address (eg: 123.123.123.123) I have configured my router to forward port 9000 to an internal host (192.168.1.101), which is running Ubuntu 14-04. I run ...
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1answer
10 views

Can Loquendo voices be used with festival or espeak?

I'm trying different voices, including mbrola ones... but those are so far away from Loquendo's.... Also I've written a bash script to convert all documents to mp3, but anyway I get always the same ...
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2answers
36 views

Find repeated words in a text

One of most common typos is to repeat the same word twice, as as here. I need an automatic procedure to remove all the repeated words in a text file. This should not be a strange feature for a modern ...
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1answer
12 views

Strange behavior when sudo -u

I'm trying to set up daily backups of my postgres database. To that end I've created a /home/backups directory, and inside it the /home/backups/postgres directory. The owner of /home/backups/postgres ...
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0answers
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Fixing Wifi dropout on a raspberry-pi

I am new to raspberry pi, and not very comfortable with linux. I am facing issues with WIFI dropouts and searching led me to this article: ...
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1answer
10 views

nginx php can't write files on centos machine

I have this PHP code: <?php $myfile = fopen("testfile.txt", "w") ?> And the following permissions in my '/usr/share/nginx/html' directory drwxrwxrwx. 3 root root 4096 Nov 20 08:51 . ...
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1answer
9 views

gtk 3.14 file chooser: folders first

I just upgraded from fedora20 to fedora21 and now the gtk file picker sorts files and folders together. I much prefer the usual and previous behaviour of displaying folders first (and I enabled that ...
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0answers
13 views

NTPD not updating time date on CENTOS

I have set up ntpd on CENTOS, I am trying to get it to pull time from a Windows domain contoller if i run the command: ntpdate dc3.mydomaain.local this works fine and updates the host with the ...
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1answer
55 views

Cracking WPA2 using Intel HD Graphics GPU

I use Linux Kali and yesterday have captured a WPA handshake of my network. I want to crack it's password - but my CPU with aircrack-ng checks only about 2000 keys per second. In my laptop I have got ...
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1answer
18 views

Shouldn't Android emulator be faster when running on Linux and ARM based PC?

I's a little bit counter intuitive to fully emulate ARM processor and whole operating system when already running inside Linux on ARM.
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1answer
12 views

Why is the “mail” command's option “-s” not working?

when I use mail root -s "subject" <~/.bashrc it doesn't work. It just prompts me to input the subject as if I used mail root. After I keyed in the content, ended it up with ' .' or Ctrl+D, it ...
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0answers
8 views

How to Connect to hexchat in linux mint 17?

I have Just installed linux mint 17 on my system. I am operating from behind a http-proxy with authentication. I have manually configured Linux mint to connect via the proxy server and everything else ...
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1answer
11 views

Block traffic to LAN but allow traffic to Internet (iptables)

On my home network I am setting up a CentOS server that will be used by about a dozen or so for educational purposes - e.g. learn how to use the Linux shell and host websites, among other things. I ...
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0answers
13 views

Setting up the network for two VMs, one blasts all outgoing traffic to the other

What I Want: I have a Windows VM that I want to route all network traffic from into my Linux VM. The Linux VM is running INetSim, a program that fakes all services for the common open ports. So as ...
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votes
2answers
36 views

Store command output in variable

If I do z='ls' and then echo $z it will print the directory I listed, but without newlines or formatting. I assume lack of colored formatting is impossible to get around, but would it be possible to ...
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4answers
43 views

increasing shrink space in windows 7

I am trying to install Linux on a machine that is currently running windows 7 home edition. I want to keep windows 7 and install windows in a partition. So I went to Disk Management, right-clicked ...
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0answers
18 views

virtualbox pinging from one subnet to another

I'm using virtualbox and I have 3 virtual machines, there's the middle vm which is a Linux Fedora 20 which has two interfaces connecting each to one subnet, the other two vms is one also a Fedora 20 ...
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0answers
11 views

Approach to providing read-access to logs

We have many servers (Dev, Integration, PT etc.) and there are a lot of tomcats running on each server. Our application is divided into components and each tomcat runs with the name of a specific ...
0
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1answer
15 views

Out of Range Check for WLAN Network

Does anyone know of a universal mechanism to check on a client device if it is still within range of a wireless network and can communicate on it? One idea is to ping the gateway, but some networks ...
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2answers
31 views

How do I upgrade scientific Linux 6.3 to 6.6

Upgrading Scientific Linux 6.3 to 6.6 I have to update machines of SL6.3 to 6.6. I tried #yum list updates and .# yum update It downloaded some files and installed . But my SL is still showing SL6.3 ...
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0answers
14 views

Docker: is it better to use two small containers or one big one

I am looking at Docker as an architecture for my next project. I want to run a DNS server and a web server. Is it better to put them both in the same container? Or should I create two? Do they ...
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0answers
7 views

Linux Selective Deleting of folders against a specific list

In Linux I need a script to delete selective folders and their respective content in a directory, but exclude some folders that I already know the names for. For example, in a directory with folder ...
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2answers
25 views

Yum doesn't list a package I'd like, now what?

I'm Linux ignorant. We're using CentOS and I have a need to install something called git-up and I understand that package managers are how you install everything onto Linux. CentOS has yum but the ...
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0answers
19 views

Linux 32 bit CPU + Oracle Limitations

I have 32 bit RedHat 4 server (with hughmem kernel) CPU is 2 x Xeon X5650 (12 total psychical cores, 24 virtual) On the server there is running Oracle 10G (32 bit) database instance. Oracle because ...
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0answers
5 views

Attach to the same tmux session from different nodes of a cluster

I'm working on a computing cluster which has several hundreds of nodes. A load-balancing scheme picks an idle node to login to when ssh-ing into the cluster. As a result, it is very unlikely to ...
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0answers
11 views

/sbin/php-fpm works while /bin/php doesn't

Compiled php 5.6.3 on centos with the following ./configure: ./configure \ --with-zlib-dir \ --with-freetype-dir \ --enable-mbstring \ --with-libxml-dir=/usr \ --enable-soap \ --enable-calendar \ ...
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0answers
6 views

Error when start of the apache2 service: version OPENSSL_1.0.1 not defined

I'm using a Debian Wheezy server where I have installed apache2, php5 and libapache2-mod-php5 packages via apt-get. But when I'm trying to start the apache2 the follow error occurs: service apache2 ...
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0answers
4 views

How to make an exception in a pam module?

I have 2 servers: A and B. I want A to connect to B via ssh (as a non-root user) to run a sudo command. But sudo on B requires a yubikey input to allow the command: auth required pam_yubico.so ...
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2answers
14 views

Output redirection at the beginning of line

I'm used to specify output redirection on the end of the line like: echo blah > output.txt Both in Windows and *nix. Recently I'm seeing more and more examples that redirect at the beginning of ...
0
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1answer
21 views

About network traffic control

I have a satellite internet connection -> a pretty nice 8 processor server with 64gb of ram, running debian 7.7, two lan ports, one connected to the gateway, the other to the wifi router, wifi to all ...
0
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2answers
35 views

Need help on user permission in group

Setup of NFS and NIS server 1. Has NFS folder ack and user ack and find below permission of ack folder including main directory & subdir. (rwxrwx---.) on NFS and NIS server. drwxrwx---. 12 ack ...
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0answers
18 views

Overwrote startup disk's partition table with gdisk; how to restore?

I installed a new hard drive in my home server today, went to format it in gdisk (larger than 2 GB), set the changes and wrote them. Then I noticed that I had selected the wrong disk, in fact I just ...
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1answer
14 views

Yum batch install package cause 100% CPU load?

I need to install a list of package as follow; so I made a small script automate it: yum -y install libstdc++.i686 yum -y install libibcm.x86_64 yum -y install librdmacm.x86_64 yum -y install ...
1
vote
1answer
19 views

OpenVPN connections works on LAN but not through WAN

I'm trying to set up a simple OpenVPN server in my home network to safely connect from the outside. The authentification itself works as i am able to connect from LAN. My DDNS lookup and the ...
2
votes
2answers
37 views

Directly connect MacBook to Linux desktop via ethernet for fast SSH?

I am looking at building a Linux desktop—desktop only; no monitor support—and getting a MacBook Pro as my main computer for mobility. I would like—while I am at the office—to basically use my MacBook ...
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1answer
19 views

PGP encrypted mails look so awful in the gmail-plain-text-editor

I run Firefox on OpenSUSE 13. 1 I want to send mails to my friend and they are encrypted. But if I use Gmail and switch to plain-text then the mails look so awful to me. (see below) And the ...