Starting from scratch with a new CentOS 7 Linode,
I found that iptables is set by default to block (although not reject)
packets to the IMAP and POP3 services.
Rackspace has a good primer
on setting up Dovecot that includes these instructions, but here's the
sudo iptables -I INPUT 2 -p tcp --dport 587 -j ACCEPT sudo iptables -I
INPUT 3 -p tcp --dport 110 -j ACCEPT sudo iptables -I INPUT 4 -p tcp
--dport 143 -j ACCEPT sudo iptables -I INPUT 5 -p tcp --dport 993 -j
ACCEPT sudo iptables -I INPUT 6 -p tcp --dport 995 -j ACCEPT sudo
/etc/init.d/iptables save sudo /etc/init.d/iptables restart
That adds a rule to accept the IMAP and POP ports, both the regular and
SSL versions. Then we save the chain table and restart iptables. Now
you should be able to get in:
$ telnet myhost.wlindley.com imap Trying
myhost.wlindley.com... Connected to myhost.wlindley.com. Escape
character is '^]'. * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR
LOGIN-REFERRALS ID ENABLE IDLE STARTTLS LOGINDISABLED] Dovecot ready.
Interacting with modern Subversion repositories requires a modern
copy. Centos 5.5, and other previous versions however, have rather old
copies. My server reported (typed text underlined) --
# <span style="text-decoration: underline;">rpm -qa|grep subversion</span>
The first step is to disable the yum-priorities plugin, if you are
using it. If it exists, edit the file
enabled=0 -- you may want to change it back after you are
Now let's see which subversion we have installed.
<code> $ rpm -qa|grep subversion
Ah, right. Version 1.4.2 ... We want at least 1.5.
Install the rpmforge repository, following the CentOS instructions.
There are the commands I used, you will want to verify the latest
# <span style="text-decoration: underline;">wget http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.2-2.el5.rf.i386.rpm</span>
# <span style="text-decoration: underline;">rpm --import http://apt.sw.be/RPM-GPG-KEY.dag.txt</span>
# <span style="text-decoration: underline;">rpm -K rpmforge-release-0.5.2-2.el5.rf.*.rpm</span>
# <span style="text-decoration: underline;">rpm -i rpmforge-release-0.5.2-2.el5.rf.*.rpm</span>
RPMs that overwrite base CentOS modules have been removed from the main
rpmforge repository, and put into the rpmforge-extras repository.
Unfortunately that is disabled by default, and it is less than obvious
how to enable it. The setting is in
... Look for this stanza and change the enabled line:
name = RHEL $releasever - RPMforge.net - extras
baseurl = http://apt.sw.be/redhat/el5/en/$basearch/extras
mirrorlist = http://apt.sw.be/redhat/el5/en/mirrors-rpmforge-extras
#mirrorlist = file:///etc/yum.repos.d/mirrors-rpmforge-extras
<strong>enabled = 1</strong>
protect = 0
gpgkey = file:///etc/pki/rpm-gpg/RPM-GPG-KEY-rpmforge-dag
gpgcheck = 1
After this, you can just do a regular
yum update or you can manually
do just the one:
<pre style="padding-left: 30px;"><code>$ yum --enablerepo=rpmforge check-update subversion
subversion </code>subversion-1.6.15-0.1.el5.rfx<code> rpmforge
Handy when you need it and frustrating when you forget how you
accidentally turned it on: That's XWindows' keypad mouse mode.
It is actived by pressing "Num Lock" while holding down the Shift key.
Hit Shift + NumLock again to toggle out of the mode.
The numbers around the edge (7,8,9,6,3,2,1,4) move the cursor up, down,
left, right, and diagonally. 5 and Enter become left-click; 0 becomes
$ <strong>tune2fs -l /dev/sdc2</strong>
tune2fs 1.35 (28-Feb-2004)
Filesystem volume name: root
Last mounted on:
Filesystem UUID: 7d99ac7d-9fc5-42ea-8f47-f2fb92b6b8de
and then in /etc/fstab you can specify a mount-point, for example:
UUID=7d99ac7d-9fc5-42ea-8f47-f2fb92b6b8de /home ext4 defaults 0 2
Applies to: Ubuntu Linux 9.10, 10.04
Reason: Laptop suspends but does not awaken properly. Screen is black,
with or without cursor, does not respond to keyboard. Issue is that
display backlight is not restarted.
Resolution: Per comments and instructions in the Lanuchpad Bugs
site, in file
Find and change by adding the bold text:
<!-- Dell Inspiron -->
<match key="system.hardware.product" prefix="Inspiron">
<strong> <match key="system.hardware.product" contains_outof="1501">
</strong> <match key="system.hardware.product" contains_outof="1501;8600">