3
votes
0answers
295 views

When would I use FBDEV vs DRM vs DSS?

I'm new to Linux graphics, and I'm interested in developing a graphics driver. I see that Linux supports three methods for writing graphics to the display device FBDEV DRM DSS2 When would I use ...
5
votes
2answers
2k views

How to install patterns and packages at the same time?

How can I install package patterns (e.g. "C/C++ development tools") and packages (e.g. "mercurial") at the same time? Currently, two commands are necessary; for example, the installation instructions ...
1
vote
1answer
14k views

How can I fake sending -time when sending email with Mutt?

Suppose a student is two hours late in returning an assignment. Now the assignment needs to travel a long way in internet so there is a good excuse that it got lost in somewhere or got jammed (well ...
3
votes
1answer
250 views

Is it a good idea to supplement shell script with perl purely for use of regex?

I'm looking for a simple way to utilize regex in a UNIX shell script where not every system will have perl extensions built into grep. What is really helpful about perl regex here is back/forward ...
6
votes
3answers
12k views

Find out network traffic per IP

We have one central server which functions as an internet gateway. This server is connected to the internet, and using iptables we forward traffic and share the internet connection among all computers ...
8
votes
1answer
3k views

How can I do NFSv4 UID mapping across systems with UID mismatches?

I am working in a lab with three Ubuntu systems, and I would like to cross-mount some filesystems via NFS. However, while the systems have some of the same usernames, the UIDs and GIDs don't match, ...
13
votes
3answers
23k views

Which users are allowed to log in via SSH by default?

When I set up my Debian 6, I was wondering, which users apart from root whose password I know can log into my system via SSH? When I install Apache 2 a user called www-data gets created. Does this ...
4
votes
2answers
3k views

Sync with a Directory Listing of An Apache Server

Is there an easy way to keep a folder synced with a directory listing via HTTP? Edit: Thanks for the tip with wget! I created a shell script and added it as a cron job: remote_dirs=( ...
4
votes
3answers
12k views

/ readonly on boot, but don't see why. how to investigate and fix?

Root filesystem mounted fine under squeeze, and after I upgraded to wheezy. I've been living with it for a bit, so I'm not exactly sure, but I think it started after doing a dist-upgrade on wheezy, ...
4
votes
1answer
5k views

find & sed (search and replace)

I'm using the following command on my mac: $find . -name “*.java” -exec sed -i ’s/foo/bar/g’ {} \; and it seems to have no effect. I have two files in the directory that end in .java, which both ...
2
votes
3answers
2k views

Change Hostname is Bash Prompt

I have changed the hostname and hosts file in /etc, however my bash prompt has not changed, do I need to restart something (like the OS?) for this to take effect?
6
votes
0answers
841 views

“crash” when switching users in Linux Mint 12 [closed]

I have a clean Linux Mint 12 install on a Lenovo R61i laptop. I have multiple users configured - one for myself, my wife, and my daughter. My account is the only sudoer. Two or three times a week the ...
2
votes
1answer
285 views

Delete repeated words between brackets inline

Our input looks something like 2012-04-17 [GBPGBP] 2012-04-13 [GBP GBP] 2012-04-13 [GBP] 2012-04-11 [GBPGBP] 2012-04-11 [GBP GBP] 2012-04-10 [GBPGBP] 2012-04-06 [GBP GBP GBP] 2012-04-17 ...
4
votes
1answer
322 views

Where does GCC look for its internal executables?

I have installed GCC to a custom prefix. When it is invoked, it complains that it cannot find some of its internal binaries. My computer's "official" GCC keeps them here: ...
4
votes
2answers
31k views

How to configure SSL in apache?

I have installed apache in RHEL 6. Everything is working fine. What all changes and configurations should be done to use https://localhost:443/. If I change the "Listen 80" to 443 it is throwing an ...
-2
votes
2answers
1k views

To display the selected part in line of text file [closed]

I have the following in a text file: 0400903071220312 20120322 20:21 1TRANTELSTRAFLEXCAB22032012CMP201323930000812201108875802100A003485363 12122011AUS 182644 ...
3
votes
2answers
2k views

How to create a single page PDF file out of multiple EPS files with GhostScript

I'm trying to merge eps files into a pdf file using GS, however, I cannot get it to put multiple eps files without page breaks in between even if original files are small. The command I'm using is: ...
8
votes
2answers
4k views

Get a progress indicator when importing MySQL databases

I often import MySQL databases, and this can take a while. There is no progress indicator whatsoever. Can one be shown, somehow? Either records imported, MB imported, or tables imported... anything is ...
4
votes
3answers
5k views

using stat to provide timestamp for touch

Am trying to OCR some documents insitu (from a linux command line on a windows share). The process of OCRing is find and I have muddled through using the find command to pipe the files through the ...
4
votes
2answers
9k views

Where is the system profile that gets sourced at login on CentOS 5.8?

In CentOS release 5.8 (Final), where is the bash system profile? Is it /etc/profile ? I've added the following to source my ~/.bashrc file but haven't had any luck as it fails. I know it fails ...
9
votes
1answer
585 views

MySQL gets killed by OS every 25 days or so

About 4 months ago we migrated from MS SQL Server to MySQL 5.5. Since then we have been experiencing an issue once approximately ever 25 days since where CentOS runs out of memory and as a result it ...
1
vote
1answer
786 views

Multiply certain numbers in a text -file by certain constant

I want an alternative solution to this jQuery hack, tasting a bit reinventing the wheel -- look I am sure I could do this with some one-liner using basic *ix tools. Look much easier and ...
1
vote
1answer
2k views

How to enable dual booting option at boot screen?

I have two hard drives, 160GB and 500GB. On the 160GB I have installed RHEL 6 and on the 500GB, Windows 7. When I start, the hard drive which is set as primary is booting directly. I have set the ...
1
vote
2answers
6k views

Mount Windows phone as a removable device

I know that the Zune software doesn't work with Linux of any kind, but I found a guide here that shows how to change regedit in Windows to use the phone as a removable device with direct access to the ...
4
votes
2answers
198 views

Why are parameters to Bash's `command` and `type` optional?

Similar to Why are parameters to Bash's builtin optional?, these commands print nothing and return exit code 0 if no parameters are provided. But unlike builtin, their help output state that at least ...
4
votes
1answer
299 views

Why are parameters to Bash's builtin optional?

Running simply builtin prints nothing and returns exit code 0. This is in accordance with help builtin, which shows all parameters as optional. But why isn't this no-op an error? Is there a use case ...
2
votes
1answer
4k views

How to make a program/process a service ?

I wonder how can I make a regular application like for instance noip2 updater a system process. I use Debian 6.0.2. For now I have it like this : the binary is in the /usr/local/bin/ as noip2 file ...
2
votes
1answer
4k views

Display all network interfaces on Solaris

On Linux, the command mii-tool displays the list of Ethernet interfaces and other information. What equivalent command existson Solaris? My goal is to view all LAN networks that my Solaris machine is ...
12
votes
2answers
920 views

When to use a semi-colon between environment variables and a command

Can anyone explain why the semi-colon is necessary in order for the LANG to be seen as updated by bash? Doesn't work: > LANG=Ja_JP bash -c "echo $LANG" en_US Works: > LANG=Ja_JP ; bash -c ...
2
votes
2answers
522 views

Disable autoscrolling in gnome 3.4

I've recently updated my gnome to 3.4 and a problem appears. When I start scrolling, scroll never ends and even continues to scroll when I switch to another window. How can I disable this annoying ...
9
votes
2answers
6k views

Is there a way to detect null bytes (␀, NUL, \0) in sed?

Related to another question, in order to fuzzily detect binary files, is there a way to detect ␀ bytes in sed?
7
votes
3answers
1k views

Change the color of the file name text

I am writing scripts to initialize and configure a large system with many components. Each component has its own log file. I would like to change the color of the component file name to red whenever ...
6
votes
1answer
5k views

Find which files are affected by bad blocks on ext4 filesystem

I have an ext4 filesystem that recently developed some bad sectors. Running fsck.ext4 -c finds and remembers the bad blocks. How can I find which files (if any) included these bad blocks so I can ...
2
votes
2answers
3k views

My debian-menu.xml is missing

I have a relatively new Debian installation -- when it was first installed, it was without a gui, but I ran apt-get install xinit and apt-get install openbox, so when I run startx I get an openbox ...
3
votes
2answers
102 views

What is the usage of pattern before substitute command in sed

There is an example in this link about sed: To delete the first number on all lines that start with a "#" use: sed '/^#/ s/[0-9][0-9]*//' What is the benefit of first pattern(/^#/)? It could be ...
4
votes
1answer
184 views

Identifying kernel modules

How do I get more information about a kernel module, like a long description? For example, I can see kernel modules like lp or hid, but those short codes do not mean anything useful to me.
4
votes
1answer
679 views

Repeat the nth last command in vim

I've noticed vim can be pretty intuitive, but I'm having trouble finding a way to repeat the second-to-last command (or third-to-last, fourth-to-last, etc.). By typing . in normal mode it will repeat ...
1
vote
2answers
196 views

Can't view Chinese chars in evince or xpdf

Instead, I get white squares. I have no idea if they are used, but I installed "xfonts-intl-chinese" (didn't work). I googled this issue, and there was a lot of talk about some bug in poppler. But, ...
7
votes
3answers
14k views

What can I use to monitor and log incoming/outgoing traffic to/from remote hosts?

I run a web server (Debian Squeeze on a VPS), and the graphs provided by the hosting company show consistently that around twice as much traffic is incoming to the server compared to the outgoing ...
1
vote
1answer
402 views

Can't mkdir /root (btrfs)

I performed a standard Debian install using wheezy/testing netinst iso for amd64. After the install completed I booted into a live environment so that I could snapshot the root as a btrfs subvolume ...
4
votes
5answers
8k views

How can I upgrade pip on Ubuntu 10.04?

On Ubuntu 10.04 I've used apt-get install pip to install pip after which I installed django. Then I tried to uninstall django with pip via pip uninstall django which gives me: pip: error: No command ...
2
votes
1answer
416 views

Ctrl-Alt-F1 to F6 work differently for left and right sides of the keyboard

If I want to log in to the traditional text shell, I can only use the right side control and alt keys, the left side ones will do nothing. Once I switch to another shell, I now have to use the left ...
18
votes
4answers
58k views

Why the default eth0 interface is down by default on CentOS?

I am already a little bit familiar with Linux distros like Debian or Ubuntu (yeah, very similar) but I wanted to try Red Hat based - CentOS 6.2 . I have installed it on my Windows 7 host in virtualBox ...
2
votes
1answer
377 views

Have shotwell go through pictures in directory in order?

This has been bothering me for a long time. I have a fairly default installation of Fedora 16 with Gnome 3. I know that since Fedora 15 (don't know about before) I have never been able to view ...
1
vote
0answers
515 views

qemu-kvm savevm very slow

I have up to date gentoo system with kvm images located on 500 gb partition with 200 gb of free space and defragmented, running machine with Windows XP and 2gb ram, I have problem with making snapshot ...
1
vote
1answer
4k views

How can I resolve the “invalid ELF header” warning when trying to SSH and what does it mean?

I'm getting some kind of warning when checking my connection to github. Why is it happening and how can I resolve it? $ ssh -TI ~/.ssh/id_rsa git@github.com dlopen /home/ubuntu/.ssh/id_rsa failed: ...
8
votes
3answers
11k views

Getting the password expire time

Let me preface this with: I do NOT have root access available. I recently got locked out of my account because I did not know the password expiration was getting close, then elapsed. I want to add a ...
1
vote
2answers
1k views

RedHat Linux Space Usage Problem

I recently downloaded something on my Redhat Linux computer, and it told me I was out of space. I checked my disk usage, and it says I've used 100% of my folder, but as you can see I still have almost ...
1
vote
2answers
688 views

dig returns different IP address when dropping the “www.” from domain name

I have performed a dig on my domain name used on my site and I seem to be getting different results when I drop the "www." from the lookup. I am concerned this is causing me issues within my ...
1
vote
1answer
553 views

Why doesn't Ruby's configure script detect my executables and header files?

I'm trying to compile Ruby and really understanding what's going on while doing so. I've used and written Makefiles before, but not autoconf's configure.in files, so maybe the result I'm getting is by ...

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