Tagged Questions

2
votes
1answer
58 views

NFS permission denied

When I configure NFS and create a file on the client NFS shared dir, I get the following message: permission denied. My configuration: configuration nfs server ...
1
vote
3answers
164 views

SUID permissions - Which is correct?

Trying to secure a Linux server and have little experience with SUID. After executing find / -perm +4000 many programs were discovered. I have seen conflicting advice here and hereon what should ...
0
votes
1answer
54 views

What is a remote config server?

I found myself enabling one of my computer on LAN to connect to a server through port 1236. A check on the list of services show: bvcontrol 1236/tcp rmtcfg # Daniel J. Walsh, Gracilis Packeten remote ...
0
votes
1answer
158 views

Opendns setup failed. How to fix it?

I have problems trying to configure OpenDNS. I have contacted OpenDNS support but they did not answer. I cannot access websites like Twitter and Facebook. I tried welcome.opendns.com (did not ...
2
votes
2answers
213 views

Finding out the values of kernel options related to sysctl.conf and sysctl.d

On my Ubuntu machine, in /etc/sysctl.conf file, I've got reverse path filtering options commented out by default like this: #net.ipv4.conf.default.rp_filter=1 #net.ipv4.conf.all.rp_filter=1 but in ...
4
votes
2answers
123 views

manage unix user settings across multiple machines

I have many different linux machines with similar "profiles". I want to keep my settings in sync. e.g vimrc, zshrc,. I have the problem that they are various distributions of Linux with various setups ...
2
votes
1answer
203 views

Configuring Wireless Network

After a long struggle I finally seem to have installed the non-free wireless firmware for my wireless NIC. I'm trying to set up a file server, so I want to configure the network to be static. Would ...
-2
votes
3answers
472 views

Differences between Windows registry and UNIX/Linux approach [closed]

What are the main differences between the Windows registry and the approach used in UNIX/Linux, and what are the advantages and disadvantages of each approach?
2
votes
0answers
68 views

How to deal with closed source modules when configuring a new kernel build

I found this command very useful: make localmodconfig However, having some closed source drivers/modules ends up being a problem because this command can't find an appropriate way of including the ...
1
vote
2answers
79 views

Linux VPS Configuration

I just recently got my hands on a linux (Fedora) VPS and I would like to ask if there are special configurations that I have to be wary of. Do I still configure it like I would configure a normal ...
1
vote
4answers
3k views

How to start changing linux source code to make custom OS?

I am doing Under Graduation in CS Major, have medium level knowledge in C, C++, and Java and also learned some operating system concepts (as they are in my course syllabus). I have heard that we can ...
1
vote
1answer
155 views

Edit the .config file when en/disabling a particular option like CONFIG_CPU_FREQ?

From here: http://www.xenomai.org/index.php/FAQs#Which_kernel_settings_should_be_avoided.3F Which kernel settings should be avoided? Note that Xenomai will warn you about known invalid ...
1
vote
0answers
226 views

Configuring network settings manually in Qubes OS

I'm trying to setup Qubes OS on my desktop but struggling to get the network/internet working. This is the configuration i want to setup - ip - 192.168.1.2 Subnet - 255.255.255.0 Gateway - ...
6
votes
2answers
3k views

How to configure network profiles in Centos?

I'm trying to setup two network profiles in Centos. One for at home, one for at work. The home profile has a fixed IP address, fixed gateway and DNS server addresses. The work profile depends on DHCP. ...
2
votes
1answer
1k views

USB 3G Modem for embedded Linux?

I am fairly new to Linux world, I have to develop an application on embedded Linux which sends data over internet. I have to choose a USB 3G modem with a SIM card holder. I would appreciate if anyone ...
5
votes
1answer
142 views

What do the kernel options in braces mean?

I saw a kernel option today in menuconfig that used braces for its checkbox. {*} Button This isn't listed in the legend at the top of the screen. [*] built-in [ ] excluded <M> module ...
3
votes
2answers
2k views

Can I change the default mail recipient on cron jobs?

I believe that if there is any output from a cronjob it is mailed to the user who the job belongs to. I think you can also add something like MAILTO=vivek@nixcraft.in at the top of the cron file to ...
11
votes
3answers
15k views

Can I change root's email address or forward all mail to an external address?

I'm getting a lot of mail in my root user's mail account. This appears to be mostly reports and errors from things like cron scripts. I'm trying to work though and solve these things, possibly even ...
8
votes
1answer
3k views

How do I set a user's default .bashrc file?

On Ubuntu 10.4 I have edited the /etc/bash.bashrc file to set some variables like the command history size (HISTSIZE=5000), however if I create a new users Ubuntu by default gives them a .bashrc file ...
2
votes
1answer
285 views

How can I regenerate the default '/etc/' config files?

I've removed nagios3 with apt-get remove nagios3 and then removed the files in by using the command sudo rm -R /etc/nagios* Now when I run apt-get install nagios3 the config files (/etc/nagios3/*) ...
5
votes
3answers
738 views

Make changes to /sys persistent between boots

I want to make "echo 1 > /sys/kernel/mm/ksm/run" persistent between boots. I know that I can edit /etc/sysctl.conf to make /proc filesystem changes persist, but this doesn't seem to work for /sys. ...
2
votes
1answer
102 views

Is it possible for grub2 to detect some specific CPU features and choose a proper kernel to boot?

I want to configure grub to check some CPU features on startup and choose a proper kernel to boot (e.g. multiple cores -> kernel with SMP support). Is it possible? If so, then how do I do it?
4
votes
3answers
372 views

How can I exclude files by default with rsync?

How can I exclude files by default with rsync? Here is how my normal rsync syntax starts out: rsync --exclude ".ht*" --exclude "error_log" --exclude ".DS*" --exclude "old" ... I've seen a lot of ...
2
votes
2answers
130 views

Non-interactive configuration of linux kernel

Is there any method to configure linux kernel in such way (just an example): make config CONFIG_OPTION=y && make config CONFIG_OPTION1=no CONFIG_OPTION3=64 CONFIG_OPTION4=/path/ and all the ...
3
votes
1answer
420 views

Change screen “hardstatus” color dynamically

I show the hard-disk free space in hardstatus screen. But also I want change the color of this value when it's less than a value to alert me. I have done a script that it checks this and it returns a ...
3
votes
2answers
261 views

How to configure CONFIG_DEFAULT_RELATIME to disable relatime

Since linux 2.6.30, filesystems are mounted with "relatime" by default. In this discussion, Ingo Molnar says he has added the CONFIG_DEFAULT_RELATIME kernel option, which: makes 'norelatime' the ...
-3
votes
1answer
131 views

Linux configuration settings

Where are the following configuration files located (e.g., Redhat)? network settings (static/DHCP/DNS) timezone proxy for network default language
3
votes
3answers
992 views

How to check if CONFIG_HIGH_RES_TIMERS enable?

I have to program a realtime application on Linux, but don't know whether the standard installation of Ubuntu has CONFIG_HIGH_RES_TIMERS enabled. How can I check this? I'm using Ubuntu 11.04 64bit.
1
vote
1answer
3k views

Fedora 15 - Audio Configuration

I have a Macbook Pro 6,1 that I have dual booting OSX and now Fedora 15. I'm working on getting the audio working. In System Settings > Sound > Output there are two options for audio devices: High ...
3
votes
2answers
3k views

ldap_bind: Invalid credentials (49)

I'm trying to set up an openLdap server and after following the instructions I'm stuck at the point where I can't add any data. The error I'm getting is ldap_bind: Invalid credentials (49) Please ...
1
vote
1answer
505 views

Where is CONFIG_COMPAT_VDSO in make menuconfig?

I'm trying to compile a Linux Kernel to run light and paravirtualized on XenServer 5.6 fp1. I'm using the guide given here: ...
0
votes
2answers
1k views

Autoconfig/Automake fails to generate AM_CFLAGS & AM_LDFLAGS for dependent D-BUS library. Why?

I want to build a program that use DBUS, using automake/autoconfig tools. But the make command always report an error "dbus/dbus-glib.h": No such file or directory. My OS is ubuntu 10.10. And I ...
2
votes
1answer
859 views

L2TP IPsec VPN client configuration

I have Linux (Fedora) box and I want to conject to VPN described as "L2TP IPsec VPN" one. I have got following credentials: user=xxxxxxxxx pass=xxxxxxxxx VPN server= XXX.XXX.XXX.XXX IPsec ...
4
votes
1answer
103 views

How do I read alternate gnome configuration files

I have a number of versions of gnome installed on a number of different hosts. All users have network mounted home directories. In some cases gnome works poorly when reading configuration from the ...