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1500 questions
54
votes
2 answers

difference between _default_:* and *:* in VirtualHost Context

I want to know the difference between "default:*" and "*:*" in VirtualHost Context. #... ServerName host.example.com #... #... ServerName host.example.com …
Luigi Giuseppe
  • 641
54
votes
7 answers

How to get e-mail from (failed) cron-jobs in Ubuntu?

I create cron-jobs in Ubuntu by placing the executable in one of /etc/cron.{daily,hourly,monthly,weekly}. There are lots of directories starting with cron: kent@rat:~$ ls -ld /etc/cron* drwxr-xr-x 2 root root 4096 2009-06-06 18:52…
Deleted
  • 1,852
54
votes
4 answers

How do I authenticate with LDAP via the command line?

The LDAP server is hosted on Solaris. The client is CentOS. OpenLDAP/NSLCD/SSH authentication via LDAP work fine, but I am not able to use the ldapsearch commands to debug LDAP issues. [root@tst-01 ~]# ldapsearch SASL/EXTERNAL authentication…
ujjain
  • 4,123
54
votes
5 answers

ipmitool - can't find /dev/ipmi0 or /dev/ipmidev/0

Based on a previous question, I installed ipmitool (yum install ipmitool). Even after a reboot, though, i get the following error when trying to run ipmitool power status: Could not open device at /dev/ipmi0 or /dev/ipmi/0 or /dev/ipmidev/0: No such…
warren
  • 19,297
54
votes
4 answers

Can a CNAME DNS record point to a subdirectory

Can a DNS record point to an address like my.domain.com/subdir1
Hannes de Jager
  • 764
54
votes
6 answers

How do I access the list of currently logged on users through Terminal Services Manager in Windows Server 2012?

In Windows 2003 and 2008 we had Terminal Services Manager (see screenshot below). However in Windows server 2012 it's gone. Does anyone know how to access the list of currently remotely logged on users in Windows 2012 through a similar tool or some…
user3903
54
votes
5 answers

Is greylisting still an efficient method for preventing spam?

I've used greylisting on my servers for many years, but I don't know how effective it is nowadays. Is it still good for fighting spam in 2012? Or is the typical spammer MTA capable of resending greylisted emails now?
neu242
  • 724
54
votes
8 answers

Ubuntu Apache: httpd.conf or apache2.conf?

which one of these two files should I use to configure Apache? The httpd.conf is empty, while apache2.conf is not. It confuses me!
ajsie
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54
votes
2 answers

How can I see the contents of the mail whose ID I get from postfix's mailq command?

I used mailq command and I got a line like for example: A705238B4C 603953 Wed May 23 11:09:58 apache@myserver.com So, now I'm wondering is there a way where I can "read" an actual content of the mail by its id A705238B4C
Nikola
  • 907
54
votes
8 answers

How do I prevent Linux from freezing when out of memory?

Today I (accidentally) ran some program on my Linux box that quickly used a lot of memory. My system froze, became unresponsive and thus I was unable to kill the offender. How can I prevent this in the future? Can't it at least keep a responsive…
johv
  • 641
54
votes
8 answers

bash/sed/awk/etc remove every other newline

a bash commands outputs this: Runtime Name: vmhba2:C0:T3:L14 Group State: active Runtime Name: vmhba3:C0:T0:L14 Group State: active unoptimized Runtime Name: vmhba2:C0:T1:L14 Group State: active unoptimized Runtime Name: vmhba3:C0:T3:L14 Group…
carillonator
  • 845
54
votes
12 answers

What are useful .screenrc settings?

Basically like some of my own that I've posted below. I'm looking for added functionality to the programme 'screen'. At the very least have a look at the last line for a fantastic 'menu bar' at the bottom of a screen session. ## gyaresu's .screenrc…
Gareth
  • 8,733
54
votes
4 answers

How to enable correct charset HTTP-header in NGINX

What is the right way to enable correct charset headers in NGINX? I'm analyzing my website with Google Page Speed. It says that I should specify the charset of HTML files in HTTP-headers. What is the right way to do this? I already tried to set…
pvorb
  • 1,098
54
votes
3 answers

How do I find out the W3SVC number of a given IIS7.5 website?

I have a server running multiple websites under IIS7.5. I want to view the log files for one website in particular. In C:\inetpub\logs\LogFiles I see a number of folders, W3SVC1 through 6. How do I find out which website corresponds to which…
Liam
  • 673
54
votes
10 answers

How do I check the build status of a Jenkins build from the command line?

How do I check the Jenkins build status without switching to the browser? If required, I can create a script using the JSON API, but I was wondering if there is already something like this built in.
Catskul
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