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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groups permissions not working

I'm confused why is this not working? Admin group is having access on the /opt directory and I'm the member of that group and still I can not make a new directory there. vita@eldamar:/opt$ ll / total ...
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73 views

Can someone put some restriction to copy few files from folder by root in linux

I have the backup script where i was making the tar backup of directory everyday. ON friday i note that my filesize was 30MB but beofrethat it was 200MB. I checked the main folder and it was around ...
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1answer
731 views

pdftk: Compressing a bunch of PDFs en masse/in batch while keeping the filenames?

I have a rather simple problem. I have a lot of PDFs that I want to compress, all grouped by college class. I don't have the time or energy to manually run the compress command when I know I can ...
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2answers
1k views

Why UNetbootin for USB but not CD-RW? [closed]

Usually, if I want to make a bootable CD for linux (Ubuntu. Mint, Debian, whatever) I just burn the ISO to CD and then restart the machine that I intend to install linux on with that CD inside it. ...
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1answer
191 views

Customize Windows 7 window and file manager to be more Linux-like [closed]

Can I configure my Windows 7 system to make it behave much more like Linux? The goal is to use only Windows kernel and drivers. I want to change the following Windows aspects: Window manager, for ...
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3answers
21k views

how to copy a file over ftp ubuntu linux

hello I'm using Ubuntu Software Center 2.0.7 and I would like to copy a file from this machine over ftp. Can you please help me how to do it? I know in Windows I just open a windows explorer and type ...
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0answers
152 views

Linux route/IPtables with internal VM network

I am having some trouble figuring this all out. I have Windows 7 [10.10.30.1] ROUTER [eth0=192.168.4.134 eth1=10.10.30.254] Ubuntu [192.168.4.143] I can ping eth0 and eth1 from Win7, and also ...
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1answer
1k views

View System Output from already running process on Linux

I started a process on my Linux machine through Putty by running a jar. Now the program will take at least 24 hours to run, and my Putty terminal session has been interrupted. I have added code in the ...
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3answers
2k views

read localhost e-mail with thunderbird

What would be simplest IMAP server allow Thunderbird to read messages to user@localhost for Ubuntu Linux? My assumption was that if mailutils could read mail with the "mail" command then IMAP or POP ...
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2answers
410 views

Which download do I choose to install VirtualBox on Linux Mint?

I want to install VirtualBox on my Linux Mint machine (so that Mint is the host), but on the downloads page I don't see any distributions for Mint. I know Mint is Debian-based, but not sure what to ...
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5answers
5k views

How to split a text file into multiple text files

I have a text file called entry.txt that contains the following: [ entry1 ] 1239 1240 1242 1391 1392 1394 1486 1487 1489 1600 1601 1603 1657 1658 1660 2075 2076 2078 2322 2323 2325 2740 2741 2743 ...
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1answer
623 views

Mount /tmp on swap in Linux

I have seen this before ... the /tmp directory mounted on swap space. I am aware something similar can be done using tmpfs, but I don't think that what was being used. I too would like to mount /tmp ...
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2answers
3k views

Lots of defunct sh zombie processes

I have a lot of defunct sh processes running. When I execute this command, to count them: ps -ax | grep sh | wc -l It says I’ve got 2655 at the moment. Do they use up any system resources? I have ...
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1answer
4k views

Samba Linux shares — Why won't windows machines display/follow symbolic links?

I set up a generally working samba server on a Linux machine like this: useradd -g users netshareuser passwd netshareuser smbpasswd -a netshareuser (passwords are the same) mkdir /net/share ...
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1answer
1k views

Remapping Logitech K520 Fn keys on Linux?

I recently bought a Logitech K520 keyboard & mouse. It's a nice keyboard, and, as usual these days, it has laptop-style Fn keys mapped as alternatives onto the F1-F12 keys. I don't really need ...
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2answers
2k views

Cannot exit X server, restart, shutdown or drop to tty when VGA monitor active

I have a strange problem. If I connect an external VGA monitor to my laptop, exiting the X environment in any way crashes the computer. For example, say I am working with my two monitors (the ...
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1answer
377 views

Installing Debian on SATA disk attached to eSATA interface

Recently, I just bought a HP Microserver Proliant N40L for use it as dns, http, vpn, file storage and also for backups of other computers at home. I already have 2 1Tb HDD's, so I thought to buy ...
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1answer
190 views

IP GeoLocator. Need included script to take source of IPs from txt document

Below is a shell script I would really like to be able to feed a txt document of IP addresses to determine countries accessing my website. Inside the text document, lets call it "IPlist.txt" might ...
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0answers
490 views

How can I preform OCR from the command line?

I need to perform OCR on the a backend of a website on a Linux machine with printed text. I read the other related questions here, so I tried tesseract, wich is considered as one of the most accurate ...
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1answer
152 views

Linux commandline - auto-optimize pictures

I have a web-app that has very many pictures. Is there a linux commandline utility which I can use to "auto-optimize" all JPEG pictures in a Photoshop-like way. Maybe with Gimp in the backend or so? ...
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2answers
70 views

2 bootloaders to load same OSes?

The question is somewhat involved, but bear with me for a minute, it's not actually that complicated. So, I have two hard discs, I suspect one of them to fail some times, but before I completely ...
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2answers
5k views

How do I find out which process is causing high CPU usage?

I have a strange issue happening on my Solaris virtual machine: After it is booted and up for 1-2 hours, the CPU usage will go up to 100% for 5 seconds, then down to normal for another 5 seconds, and ...
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1answer
598 views

How to make VirtualBox headless answer on rdp port?

I'd like to run windows xp on RDP: $ VBoxManage modifyvm winxp32 --vrdeport 3389 $ VBoxHeadless -s winxp32 -v on Oracle VM VirtualBox Headless Interface 4.1.18_Debian (C) 2008-2012 Oracle Corporation ...
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1answer
101 views

How to import “manually” configurations from another hard drive?

I have another hard drive with Ubuntu upgrading that crashed (upgrading from 10.04 to 12.04 was an unrecoverable mistake). I've bought another hard drive, re-installed Ubuntu 10.04 (because don't ask ...
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1answer
1k views

Python error In linux

I removed the default python install from my linux using rpm command without removing the dependencies, I was trying to install 2.7 manually, which wasn't working out that is whay I thouht may be it ...
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1answer
1k views

Linux permissions: How to make permissions changes permanent

I'm using Ubuntu 12.04 and I have /sys/kernel/debug/ with no read/execute permissions for anyone except root. I can change that with sudo chmod +rx /sys/kernel/debug/ but the permissions are reset ...
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2answers
2k views

Debian installation and RAID5

I just bought a HP Microserver for use it as dns, http, vpn, file storage and also for backups of other computers at home. I already have 2 1Tb HDD's, so I thought to buy another 2 HDD's and install ...
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2answers
7k views

How to know what version of C++ compiler is installed on Linux server?

We have a RHEL5.5 server, and the system engineering guys at my company said that they have recently installed Intel C++ 11.1 compiler on the box. But, when I do a cc -v, I get Using built-in ...
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0answers
85 views

tar --remove-files behavior: delete after every file or after completion?

Pretty much in the title. I have a box with very little disk space left and lots of data. I want to add all of the files into a tar, deleting them as I go because there is clearly not enough space to ...
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3answers
715 views

How do I reduce a PDF's size and preserve the bookmarks?

I have a ~259 MB PDF. I did pdf2ps and ps2pdf. The final size was 45 MB. I don't see any visible difference in quality in any reader. Although, the bookmarks were lost. I tried using pdftk, but it ...
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4answers
2k views

Does tar preserve links? [duplicate]

Possible Duplicate: How can I tar ball a directory hierarchy with soft links in linux I am using tar to copy files and directories from a Solaris machine to a Linux machine. Does Tar ...
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2answers
279 views

What is the use of option -u in the Linux cat command?

In the man page of cat, -u means (ignored) [raj@localhost zzz]$ cat file1 hello world 1 2 3 4 5 6 7 8 9 0 ! @ # $ % ^ & * ( ) _ + ~ ` ; ' , .{ } [ ] = | \ / - [raj@localhost zzz]$ cat -u ...
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1answer
261 views

enable password check for single-user mode

I've been trying to find out how to activate that I'm prompted for a password when i boot in single user mode under linux, but I can't find it. Where can I set this option?
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1answer
2k views

e1000 and e1000e network drivers

I am using SUSE Linux 11, in Zenworks distro and i can see. kernel version is: 3.0.13-0.27-default. I can see that when the distro is loaded, the e1000 driver is loaded and not e1000e although e1000e ...
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2answers
1k views

Filezilla not showing directory listing?

I had downloaded iptables from server to my windows desktop .I edited some lines for opening port (2195) .after download i added some line for enabling port using this link ...
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1answer
872 views

Compiz effects in XFCE

I just installed Ubuntu 12.04 as well as xubuntu-desktop. When I'm logged in using unity, my compiz effects work fine, but under xfce they don't seem to work. I've installed compiz config settings ...
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1answer
102 views

Strange router's firewall behavior on Linux

I have router, static ip and when I start Minecraft server on Windows, anyone can connect to it, but when I start server on Linux, only players from my local network can connect. And other players can ...
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1answer
3k views

mdadm: superblock on /dev/sdd1 doesn't match others - assembly aborted

OS: Debian Squeeze Kernel: 2.6.32-5-amd64 mdadm version: 3.1.4 (31 August 2010) mdarrays md1 = raid1 (this is working) (devices: /dev/sd[fg]1) md0 = raid6 (previously raid5, ...
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2answers
1k views

Can I configure BIND to query my router for LAN addresses?

As is common with home routers, my router, an ASUS RT-N66U, is configured to act as a caching nameserver for my LAN. It looks like the router uses dnsmasq for name service. The router also offers DHCP ...
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1answer
116 views

Virtualbox alert on screen changes

I'm using Debian GNU/Linux + awesome. Inside it I use virtualbox with ms windows. Most time I spend in Linux, however I constantly need to monitor if something new happens in the guest system. Is ...
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votes
1answer
7k views

How to install numpy on CentOS 6.2 64-bit

I've been trying to install numpy with yum (instructions here), and the tar.gz file (instructions here), but with no positive result. yum gives me this output: $ sudo yum install python-numpy ...
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1answer
319 views

Are there any security problems within my CentOS system? [closed]

I have tried to use Nmap to test the ports of my server:) The details are as follows. Are there some vulnerable ports on my server? If yes, why is it vulnerable, and what should I do in order to ...
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votes
3answers
2k views

How to find the default file manager?

as a Linux user, I see that some applications can request a path to be opened and this causes a file manager to be launched. I'd like to do this programmatically, but how can I know which is the ...
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2answers
2k views

Installing Linux with no Graphics Chip

I am looking to build a compute workstation. I want to install the newest version of Scientific Linux. The issue is that the currently planned hardware does not include graphics (external or ...
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1answer
3k views

How can I run script when I start up my Linux machine?

I would like to run the python script, when I startup the Linux machine. How can I do so? I don't need the user to login the OS to start the script. (The user is password protected.)
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1answer
463 views

Avoid unwanted path in Zip file in makefile

I want to create an archive for a given folder but without the folders name in the path... In fact I want to do the same thing that this post : Avoid unwanted path in Zip file BUT I'm in a makefile ...
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4answers
1k views

How to track computer's uptime

I have Linux desktop. I don't leave it 24/7 turned on. I would like to gather statistics on how much time computer was turned on each day, f.e.: 2012-08-21: 7:52 2012-08-22: 8:43 2012-08-23: 7:36 ...
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1answer
584 views

Is there an analog of Bash's Ctrl+Z & fg in Powershell?

I find the combination of Ctrl+Z with subsequent fg on Bash very handy, it's like a command line analog of alt+tab, so I can switch from viewing one file to the output of a running process etc. Is ...
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1answer
146 views

in which kernel version CONFIG_IP_NF_MATCH_OWNER appears?

In which kernel version CONFIG_IP_NF_MATCH_OWNER key appears? I dont see it while make mennuconfig on 3.2.28 that I am trying to compile for my ubuntu 12.04 (3.2.0 - default kernel version).
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2answers
124 views

Linux machine to be converted to NAS [closed]

We have a (pretty old) Linux machine running crunchbang linux (64 bit). The machine was used for some time just as a storage space, files were managed mainly via SCP and SSH. But due to the increased ...