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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What is the purpose of usb0 ethernet device on Centos 6.5 machine?

My Centos 6.5 machine installed with 2 ethernet device (eth0 and eth1). But when I listed all ethernet device with ifconfig -a as root, in resulted list have another ethernet device usb0, as follow: ...
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3k views

wget mirroring the site fails - 403 Forbidden, even with user-agent

I need to download suricata's latest rules from this url: http://rules.emergingthreats.net/blockrules/ I'm trying to compose my own rules based on different emerging rules and snort's rules too. ...
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780 views

Fancontrol starts manually but fails as service

When fancontrol is started from the terminal it works fine # fancontrol Loading configuration from /etc/fancontrol ... Common settings: INTERVAL=2 Settings for ...
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2answers
4k views

Linux 64bit on Virtual Box with window 7 profession 64 bit

I have HP ProBook 450 G1 Laptop with Window 7 Professional. It is Intel Core i7 and it claim it has Virtualization Technology. But I can't find it in Bios to enable it. Now I installed Oracle Virtual ...
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1answer
103 views

Why OS Windows does not boot after disk disconnected?

I have problem with booting from Mandriva linux boot menu to Windows. I previously used two disks: one with Windows and one with Mandriva and booting worked. However when I removed the disk with ...
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1answer
41 views

NetBIOS replying only to external requests

I have some IPs on the internal network I'm 100% sure have netbios enabled. (I say "internal network", but all the IP octets differ. It is just the same institution and geographical location). If I ...
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1answer
708 views

Batch convert txt file encoding

I have about 700 files that were the results of a closed caption software process. I can open the files on my PC or Mac in a GUI, but when I open it on the server with nano, I get this: ...
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61 views

Use SYSLINUX to boot from a separate device

I have a laptop with no harddrive that I'm booting from a modified persistent LiveCD thumbdrive, but performance is terrible due to the low speed of the thumbdrive. I also have a class-10 SD card of ...
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231 views

Linux: What is causing high interrupt activity for IRQ 23 (ehci_hcd)?

I run gkrellm to monitor my workstation. Total CPU usage usually runs 0-1% at idle; when there is activity, it's usually cyan-colored (user space). It was running clean this morning. A couple hours ...
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32 views

Recover deleted files Raspberry Pi [duplicate]

Yes, I know I should've had a backup, but I accidentally rm -rf'ed a folder with some files I need in it. It was in the home directory, I shutdown the Pi as soon as I realised. Is there some file ...
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1answer
38 views

Different globbing behavior with same shopts?

I have multiple shells (bash) open on the same machine, and in one of them, globbing seems to have stopped. ls * gives ls: *: No such file or directory, and so on. I figured that I must have set some ...
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243 views

Semaphores leftovers on linux machine

While managing large Linux servers environment I see sometimes machines reaching their IPC limits, more specifically, semaphores leftovers: Linux #ipcs -u | grep -B2 sema ------ Semaphore Status ...
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1answer
197 views

Restore boot without formatting (UEFI)

I have a problem and I would not format more my poor HDDs. Hardware situation: Motherboard Asrock 970 Extreme4 (UEFI) HDD1 (/dev/sda) -> Recovery | EFI Partition | Windows 8.1 HDD2 (/dev/sdb) -> ...
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1answer
1k views

Can't install wireshark on Debian Linux

I'm trying to install Wireshark on Debian (Debian 3.2.51-1) but i'm getting this error: apt-get install wireshark Reading package lists... Done Building dependency tree Reading state ...
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75 views

Send email alert when receiving mail on a different address

I currently have 3 email addresses for various things (university, work, personal - all gmail addresses) - I'm trying to stay notified of new emails in all three, but the widely-used methods aren't ...
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75 views

Linux Box Internet Speed

I have encountered a weird problem with my Centos6 Server, currently I have install Centos6.4 on a 64bit support CPU with 8GB of RAM and 500GB HDD. Just went to check on the internet this morning and ...
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125 views

Garbled Chinese characters in inkscape SVG file

The linked directory in this github repository contains a file chinese.svg that I originally made using inkscape on a linux machine. The drawing contains Chinese characters. If I open it on my current ...
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2answers
498 views

Mounting a unionfs hides ALL lower-layer files

I have partitions in /dev/mmcblk0p5 and /dev/mmcblk0p7. I would like to union them together such that p5 is read-only and p7 holds the changes. I'm mounting p5 on /ro-root and p7 on /root-overlay. / ...
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1answer
1k views

Linaro system boots to root without password

I installed a linaro system on my ARM chromebook, and it seems to autoboot to a root prompt. I've set a user password, and use it to login to the GUI, but with a simple Ctrl+Alt+F1, I can get to a ...
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75 views

Change Keyboard Shortcuts in Linux

The Dvorak keyboard option on Fedora 20 XFCE does not have an option to switch the Ctrl+C, V, X, etc. shortcuts to where they are in QWERTY (which are very convenient locations). So I would like to ...
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1answer
428 views

svn checkout with ssh tunnel on fedora missing ssh-askpass library

I'm running fedora 20 and when I try to run svn checkout svn+ssh://repo I get this error after typing my ssh passphrase for my key: ssh_askpass: exec(/usr/lib64/misc/ssh-askpass): No such file or ...
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2answers
73 views

Why do I see the unicode character è when I type Alt-h in my xterm on CentOS?

I am sshing into a centos box from an ubuntu box. I keep seeing è when I type alt+h (aka M-h). I want to use this key combo in tmux bindings but it doesn’t work because tmux doesn't recognize utf8 ...
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1answer
165 views

LDAP backed Samba File Sharing - What is really required?

I'm administrating a small network infrastructure consisting of a couple of Linux machines used for development and several web services. User management is done using a LDAP database which works very ...
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2answers
282 views

Running the script on startup (ubuntu)

I have this script named startupcss I placed it on /etc/init.d then add the service update-rc.d startupcss defaults but when I try to start the service service startupcss start I get this error ...
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276 views

How does multiarch works?

I'm trying to set up a multiarch rootfs for a system which can run both endianess from the same kernel. Of course, I can' t mix libraries of different endianness inside the same program. On top of ...
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64 views

How do I get the grub menu to list both my Windows 7 installations?

I have the following disk configuration: Disk /dev/sda: 750.2 GB, 750156374016 bytes 255 heads, 63 sectors/track, 91201 cylinders, total 1465149168 sectors Units = sectors of 1 * 512 = 512 bytes ...
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201 views

Can't login to CentOS desktop as root via GUI prompt

I have CentOS 6.5 running on a VM in VirtualBox (Windows host). I had no problems logging in as root from the GUI prompt (clicking on Other and typing root, then my root password and getting the ...
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75 views

How do I have automatic encrypted backups?

I have a jailbroken iPhone, 2 Laptops, and another server. I will set up these devices to backup files to a main backup server I have but I'm wondering how I can have this done automatically while ...
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1answer
203 views

Access denied error with svlogd

I've setup a debian wheezy server and I'm using runit to keep my services humming along. I've also configured svlogd, but that's where I'm getting problems. When the services start I run "ps aux" and ...
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206 views

Unity closes on Ubuntu Logout, but does not complete logout. (Crouton on Chromebook)

I've got a Chromebook 14 "dual-booting" Ubuntu 14.04 using Crouton with the stock Chrome OS. I've had it like this for a while with everything operating fine. As you know, Linux Distros are kind of ...
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114 views

declare -A on RHEL 5

I am using an associative array on my RHEL 6 servers and I just tested the script on a RHEL 5 server and apparently -A is not supported for the declare command on RHEL 5: declare -A var -bash: ...
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239 views

iptables configuration on Windows Azure (CentOS 6.5) for endpoint load-balanced set

I created 2 VMs (CentOS6.5) on Windows Azure for Postgresql database and HA cluster, everything works fine except when I set iptables service on, the endpoint load-balanced set is down. for security ...
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211 views

fuse + encfs, can mount but cannot unmount with fusermount

I created two directories in home, and mounted them with default configurations with encfs. That worked well enough, the file system is mounted and encrypted fine. The odd part now is that I cannot ...
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127 views

Is there a way to use a “hardware fingerprint” to automatically mount an eCryptFS directory on boot?

I would like to have an eCryptfs directory "securely" automatically mounted on boot without logging in. My scenario is this: I have an embedded ArchLinux server (ARM-based) that uses a removable ...
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1answer
162 views

CONFIG_CMDLINE_OVERRIDE set but hardcoded vga-boot-parameter ignored?

I have build a custom linux kernel with the options: ... CONFIG_CMDLINE_BOOL=y CONFIG_CMDLINE_OVERRIDE=y CONFIG_CMDLINE="initrd=linux_os.gz root=/dev/ram0 init=/sbin/init ramdisk_size=25600 ...
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1answer
556 views

Does SFTP put operation have size limit?

I use SFTP to transfer file from local to remote Linux machine. However it fails. I tested it and come to a conclusion that, when transfer file is bigger than testScp.txt1, it fails and the machine ...
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1answer
185 views

Changing bluetooth device name

How can the friendly device name of a remote Bluetooth device be changed (using a command-line tool in Linux or similar)? I have looked at some of the software included in bluez-tools such as hcitool ...
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89 views

An inaccessible folder with a random name has appeared in my ~/Pictures folder

Today I noticed a folder within my Pictures folder, that I did not create, and can't access even with root privileges, it is named "3TNksAEHqX" and I can't use ls on it, though I can stat it, as seen ...
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206 views

Synology NAS resume rsync backup after connection loss

I am trying to do a backup from a synology NAS to an offsite NAS. I am using rsync through DSM5 as of now, but it doesn't give me the possibility to resume the backup if a connection loss occurs. This ...
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314 views

Permission on create folder in ftp using vsftpd

i need create folder on FTP with permissions 755 and files with 644, so i set local_umask=02, and files are create with permissions 644 but folders stay 775, how to make folder with permissions 755, ...
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1answer
48 views

linux - use wmctrl from tty1

When I try to run wmctrl (e.g. wmctrl -l) from a tty outside of X (e.g. tty1), I get "Cannot open display." I have tried setting the $DISPLAY and $XAUTHORITY variables to the values I get from a ...
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1answer
4k views

Ethernet issues in Linux mint.

After a hardrive crash I installed mint 17 LTS with many attending woes related to lack of drivers (two of my 8 usb ports can actually recognize devices plugged into them). I'm currently attempting to ...
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1answer
39 views

How can I put my skype notification settings in a public git repo

I maintain key configuration files in a public git repo - I'd like to put my skype configuration in it too, because I find the default configuration way too noisy. The newer version has started ...
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2answers
328 views

www-data group write after sftp?

I'd like to have my apache user be able to read and write files, my sftp user(s) to be able to upload files that are then available (rwX) to both other sftp users and apache, and everyone else read is ...
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2answers
2k views

Ubuntu can't mount windows share

I want to access by termin a Windows share so on my Ubuntu 14.04 system I executed the following command: sudo mount.cifs -o username=dana //192.168.1.4/Users /mnt/ After entering the sudo ...
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174 views

Touchpad on linux way too slow

Recently my touchpad has gotten to be way too sow on Linux. I use Fedora with a Dell Inspiron 15R. It was working fine for months, but recently is unbearably slow regardless of my speed settings. I ...
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122 views

How to restore the file access time after extracting from archive

Is it possible under Linux to restore the file access time to that of the original file after extracting files from an archive created with tar on NTFS file system? tar does not restore the access ...
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208 views

transferring files with spaces in them with putty's pscp

I tried the following to no avail: pscp -load test username username@domain.tld:"file name.ext" "file name.ext" pscp -load test username "username@domain.tld:file name.ext" "file name.ext" pscp ...
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35 views

How can I run a cron job from PM to AM? [duplicate]

I want to execute a script once an hour from 20:00 to 08:00. Would the following work? 0 20-8 * * * location_of_script_to_run I'm currently using the following: 0 20,21,22,23,0,1,2,3,4,5,6,7,8 * * ...
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86 views

Strange behaviour for setuid and setgid

I am doing a small experiment with special privilege bits as follows: [root@localhost~]# useradd user1 [root@localhost~]# cp /bin/touch /home/ [root@localhost~]# chown user1:user1 /home/touch ...