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1500 questions
51
votes
7 answers

Default CA Cert Bundle Location

I need to add a .pem cert file to my default CA cert bundle but I don't know where the default CA Cert bundle is kept. I need to append my new .pem file to this default bundle. I'd rather do that than specify my own location using --capath cURL…
Slinky
  • 1,077
51
votes
4 answers

Is there a way to list all configurable `alternatives` (symlinks for similar commands) on the system?

The alternatives command (package chkconfig) on RHEL/Fedora manages symlinks which link a generic name to one of the alternative implementations. For example, mta group of symlinks can be provided by Sendmail and Postfix (to implement i.e. sendmail…
uvsmtid
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51
votes
2 answers

Should I use IPv6 only or both IPv4 and IPv6 in my web server?

My web server (Ubuntu, Nginx) have both IPv4 and IPv6 addresses assigned by the host. For my website, shall I bind it to only an IPv6 address? Is it the standard recommended way? Or, shall I use both IPv4 and IPv6 addresses?
THpubs
  • 1,835
51
votes
6 answers

Postgres error message: FATAL: Ident authentication failed for user "..."

Say you're seeing this message: FATAL: Ident authentication failed for user "..." What are the causes of this error message?
Steve Bennett
  • 6,000
51
votes
3 answers

telnet counterpart for UDP

Is there anything that enables a "telnet-like" functionality for UDP? I know the difference between TCP and UDP, and why telnet itself won't work - but I'm wondering if there is something similar to the telnet client, from the end-user perspective.…
Dexter
  • 647
51
votes
2 answers

How does Apache merge multiple matching Location sections

I'm working on some basic apache configuration, but I don't understand precisely how apache merges different sections when several of them match an incoming requests URL. The apache documentation in its "How the sections are merged"…
LordOfThePigs
  • 747
51
votes
11 answers

How to delete all but last [n] ZFS snapshots?

I'm currently snapshotting my ZFS-based NAS nightly and weekly, a process that has saved my ass a few times. However, while the creation of the snapshot is automatic (from cron), the deletion of old snapshots is still a manual task. Obviously…
growse
  • 8,185
51
votes
2 answers

Construction workers filled my SAN with concrete and mineral dust

Update: EMC has dropped our warranty and support, so this is going to be an insurance case. Dell says's that we can get a professional cleaning agency to refurbish the servers and keep our warranty. Cisco says "maybe". HP is still silent :( Final…
pauska
  • 19,766
51
votes
6 answers

"No worthy mechs found" when trying to relay email to Gmail using Postfix

I've been trying to configure email to forward to Gmail, using Postfix to relay email to smtp.gmail.com. However, I'm failing to get it to authenticate with smtp.gmail.com, which is a rather vital prerequisite to getting anything working… The mail…
gsnedders
  • 1,371
51
votes
7 answers

How to take full ownership of an IP address?

My business is... troublesome. What I do is legal in every country on earth, but some people don't like it, and make it so tough on my poor ISPs that I am forced to go looking for new providers more often than I would like. The only option I know of…
darkAsPitch
  • 1,971
51
votes
7 answers

Get IP addresses and computer names in the same network

What is the command that can be used to get the IP address and the names of the computers that are located in the same network? I am running Windows
Graviton
  • 2,995
51
votes
4 answers

apt-get update/upgrade list without changing anything

I would like to view what packages are available for update/upgrade without actually changing any files becuase there are some packages I wouldn't like to update. Would it then be possible to apt-get update with exceptions.
John Magnolia
  • 1,851
51
votes
4 answers

subdomain of a subdomain?

I am trying to create url like sub2.sub1.subdomain.domain.com. I am planning to use this to display different content. my questions are... 1) Is it possible to create such multi level sub domains? - is this based on the hosting company? 2) Isn't…
Chris
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51
votes
7 answers

How to remove IIS/ASP.NET Response Headers

I have a couple IIS/6.0 servers that security is asking me to remove a couple of response headers that are sent to client browsers on requests. They are concerned about divulging platform information through response headers. I have removed all the…
Astra
  • 683
51
votes
14 answers

Is there any way to get APT to install packages to my home directory?

Is there any way to get APT to install packages to my home directory? I don't want to make changes system wide. Alternatively, are there any home-directory based linux package managers?
Joel McCracken
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