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

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Passwordless ssh between two nodes, but the authorized_keys file is on a shared filesystem (GPFS)

so I have two servers. On these servers /dev/sdb is a disk that has been used for a shared filesystem (i.e, both servers put their second harddrives "together" and now each one can use all the space ...
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72 views

Installed Debian on a PC, now cannot boot to anything else

I installed Debian (6.07) on a PC. I wanted to install Ubuntu (12.10) after, but I could not boot to CD after Debian was installed. In fact no bootable disk(CD or floppy) would load once Debian was ...
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163 views

Free disk space when installing debian?

I am currently installing Debian on VirtualBox. I want to partition the disk so that there is free space left over. How can this be done? Should I choose manual partitioning? If so how should I ...
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265 views

Unable to resize Ubuntu VM with VirtualBox

I've gone through some of the similar questions asked, but none seem to quite solve my problem. I have a VirtualBox 4.2 install on Ubuntu 12.04 (x64) as host, with Ubuntu 12.04 Server (x64) as guest. ...
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22 views

Built installation usb key from linux virtual machine

I have a virtual machine I'd like to install as real os on my machine. As I have refit installed on my macbook air (Mac os, windows and ubuntu), I tried the clonezilla methode in order to overwrite ...
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525 views

Linux machine refuse to boot with invalid elf header

Recently, after a power supply crash problem, my linux machine (Centos 5.5 X64) did not boot neither gnome nor shell. On gnome startup it shows this error: /etc/X11/prefdm: line 16: ...
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409 views

How to index and search SFTP/SSH files in Windows?

I use Index Your Files to index and search shared network locations quickly in Windows. I found some files on a shared network location. When I opened this network location in WinSCP I found that it ...
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970 views

How to pass parameters to a Linux kernel with grub?

I have posted the question "Kubuntu 12.10 laptop battery dropping fast" and there i have received the answer as accept As advised on another Stack Exchange forum, the procedure to accomplish an ...
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348 views

Remove a older Version of man-db on a Raspberry with Debian Squeeze, man-db breaks less (<<456)

for some people this would be easy but I've been googling a lot and I can't find a solution. My problem is tha I want to install man-db_2.6.3-3_armhf.deb on a raspberry, but when I try to install it ...
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417 views

How can I connect to wpa wifi access point from a freashly loaded SystemRescueCd?

There are many wifi access points around me which passwords I know. I try to install gentoo linux from SystemRescueCd. It supports wpa. How I can scan for access points in the console? How I can ...
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497 views

Access denied on all users except root

Been looking for an answer to this for hours now, and can't find one. I'm trying to SSH into my Ubuntu server. I can login with no problem as root, but as soon as I try to create another user and ...
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171 views

After X restart all XFCE styling is gone (icons,fonts,colors)

I added a monitor with nvidia-settings and after restarting X all my settings seem to have disappeared .. I tried many things like restoring the xorg.conf - this worked but then I saved to ...
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109 views

Moving bluetooth pairing from one PC to another?

I'd like to be able to move bluetooth pairing from one PC to another so the bluetooth device would automatically pair to the new PC. It appears that this is requires a few things: Moving the ...
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2k views

Pam Tally Linux to ban users from wrong passwords

I have a major problem with a fedora distribution (17). I don't know how to set up /etc/pam.d/system-auth in order to ban a user after he/she writes the password wrong (3 times) I have read ...
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71 views

host to host translation in linux?

In Linux (fedora or cent OS, etc), I want to say if one program tries to download from one url, it goes to my host (my url) instead of what it tries to go. Something like /etc/hosts, but /etc/hosts is ...
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2k views

Tomcat 7 not starting on Centos

I try to learn to work with tomcat but are struggeling with the installation and starting of the daemon. I downloaded from the tomcat website and put the binaries under ...
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539 views

fatal: error when closing sha1 file: Permission denied

I am attempting to create a local git repository using a mounted linux drive (via SSH via ExpandDrive) from my mac using GitBox, however when I attempt to make a commit I continually receive this ...
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49 views

Is it possible to apply special restrictions for a content of a directory?

I want restrict permissions to the content of a directory /abc/def/: disable links (symbolic or hard) limit the number of write permissions pointing to the same file (e.g. to 1, so only one process ...
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158 views

Ubuntu login error

On my ubuntu machine when I am trying to login I am receiving an error : mount : mounting /dev on /root/sys failed : No such file or directory mount : mounting /proc on /root/proc failed : No such ...
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91 views

putting “screen” in ~/.profile does nothing

I want to always use "screen" in any terminal. i've added into my ~/.profile a new line: "screen", just like it said here: ...
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43 views

Create a logging program

I want to create a program that logs all the processes started by the user and confirms after they are started. I don't want to log all the syscalls and other daemon processes. I have initially ...
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402 views

Commands for reporting media file metadata info on a linux(Red Hat) machine

All, I have a shell script running on MAC OSX that uses mdls command to report metadata information about media files (mp3, m4v, mp4, m4r etc.). I have to write a similar script for a linux ...
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42 views

script test for .NET or regular PE exe

I need to test in a shell script if an exe file is a .NET or regular Windows PE executable (without running it). Use case: associate .exe files with this script in Linux. Launch wine or mono ...
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342 views

Does presence of Link local address mean the system support IPv6?

I am trying to implement dual stack for IPv6 support in a IPv4 system. I have configured a DHCP server which gives IPv4 and IPv6 address to the device. My PC and the VM running on it gets both, IPv6 ...
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2k views

Increasing INode Limit

Is there a way to increase the INode Limit in CentOS without adding partition ? I got some 5 million files to be stored but it may increase in future.
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674 views

Cannot modify files with SAMBA and CurlFTPfs

I have all my ftp accounts mounted via CurlFTPfs with allow-others option. All directories have --- --- rwx (0007) permission after ftp mount with umask=0770 . This way I can log as another user (than ...
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436 views

Timeout - host FTP to VirtualBox

For testing purposes I installed virtualbox to simulate a linux(64 bit ubuntu) server. I configured my network settings like this: Adapter 1: NAT Adapter 2: Host-only with my etc/network/interfaces ...
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755 views

Cron job mail change sender address

I have cron jobs setup in my website and they do pretty well but my problem is that the output sent as email by these cron jobs are delivered with 'from name' as Cron Daemon. Please is there any way I ...
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75 views

.htaccess not running?

I am new to linux administration and I am trying to restrict the outside world from accessing files in my /var/www folder. I have done my research and found that .htaccess and .htpasswd was a good ...
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239 views

how to dd capture partitions of a VMware Player VM

I have a Linux VM that runs in VMware Player. It has /dev/sda1 mounted as /boot and /dev/sda2 mounted as /. I want to use dd to capture both partitions. I now know from the answer to this post that ...
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259 views

Union mounts not supported by the 3.8 kernel?

I've been using union mounts (unionfs) for live images and read-only rootfs images. But when I updated the kernel to 3.8, I found that there were no config items related to overlayfs. So the 3.8 ...
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616 views

Stuck in a virtual console after init, not sure how to proceed

When I turned on my laptop today this message (for a first time greeted me) login as: root root@10.10.10.158's password: Last login: Sun Sep 7 10:25:51 2008 from 10.10.10.41 Linux debian ...
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398 views

Which Package has net_tstamp.h?

I attempted to compile the source code here: http://os1a.cs.columbia.edu/lxr/source/Documentation/networking/timestamping/timestamping.c?a=x86;v=2.6.32 However, I got a compiler error: error: ...
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892 views

What time does cron.monthly jobs run in SLES?

doc says cron.monthly will be scheduled according to the first run time and it compares /var/spool/cron/lastrun/cron.monthly with current time to run. Question is will it run according to the ...
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563 views

How can I set up a proxy for HTTP POST requests?

I have a web service that accepts POST requests. This is a network internal service where internet attacks are not a concern at this layer. However, it's not always fast. The user doesn't need the ...
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1k views

Python 2.7.3 is not installed in centos 5.8

Python 2.7.3 installation in centos Python build finished, but the necessary bits to build these modules were not found: bsddb185 dl imageop sunaudiodev ...
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130 views

Modifying the linux scheduler

I want to change specific parameters of the linux CFS scheduler like the virtual runtime of particular processes dynamically ( vruntime parameter in the sched_entity ). Is there any definite method to ...
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169 views

Troubleshooting X sudden restart/crash using XFCE 4.8 with stylus pen

I have a convertible laptop/tablet with graphics tablet screen, which often logs out of the current X session whilst using GIMP 2.6. I am dropped back to the login prompt without a system wide ...
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1answer
46 views

Make Different users in Unix or Linux and Set their individual permissions

I want to make different users at my server(say 22.23.34.*) and set each user's permissions to their particular directory only. Lets say my server is having three directories Directory A, B, C => Now ...
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219 views

Classpath reading in Linux

$ $CLASSPATH $ $ source .profile $ $CLASSPATH > bash: :/usr/java/connectors/mysql-connector-java-5.1.23-bin.jar: No such file or directory $ /usr/java/connectors/mysql-connector-java-5.1.23-bin.jar ...
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71 views

1 minute deployment of custom Linux installation

A typical Debian/Ubuntu installation takes at least 15 minutes, and you have to answer a lot of questions along the way. Yet a VPS service on the Web is able to deploy a ready-to-use Linux server in ...
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1answer
457 views

Dual booting windows 7 and Mint 14 with “something else” option

I would like to do a dual boot of Windows 7 and Mint 14 on my Acer netbook which already has Windows 7 Pro 64-bit installed on a terabyte hard drive. I have already shrunk the Windows 7 partition to ...
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2k views

Timeout in whois command

Unable to figure out the problem with whois command. Whenever i give any query to whois command it gives timeout error. I also learned about jwhois command but it seems it is also getting similar ...
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546 views

Can an inode table on the root partition be-rebuilt or salvaged?

A friend (not technical) has a Linux server running CentOS which will no longer boot. His IT guy looked at it and says the inode table on the root partition was basically gone. Since the inode table ...
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400 views

Lightweight, small-memory-friendly job scheduler/control system for Linux?

I'm looking for a job control system for Linux. Before you ask - quite aware of cron and at :-) What I want is something where I can set time windows for jobs to run in, priorities, and some simple ...
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930 views

Laptop freezes upon booting Linux distributions from USB flash drive

I'm trying to boot a live distro on a VAIO YB35AL ultrabook. It doesn't have an optical drive, so I'm using a USB flash drive, and deploying the Linux ISOs to it using either unetbootin or Universal ...
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68 views

KDE 4 has only 1 switch effect?

In the KDE 4 Desktop Effects dialog, I can see these switch effects: Box Switch Cover Switch Flip Switch But no matter which one I choose, when I press Alt+Tab, the switch effect is always the ...
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177 views

Install linux/bsd on compact flash using USB connector

How do I install linux/bsd on compact flash with usb compact flash adapter. The compact flash will boot on single board x86 computer as an IDE drive, but I'm doing the install on a regular computer ...
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92 views

connect to windows from ec2 via vpn

I am not sure if I should be asking this kind of question on stackoverflow, so if not please be kind and point me in the right direction. I am trying to connect my ec2 ubuntu 12.04 to a windows ...
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578 views

How to calculate max_connections for PostgreSQL and default_pool_size for pgbouncer?

Is there a rule or something I can use to calculate a good number for max_connections, default_pool_size and max_client_conn? The defaults are odd. PostgreSQL defaults to max_connections=100 while ...