build:misc
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build:misc [2008/05/08 23:07] 4.245.76.155 |
build:misc [2011/05/21 10:11] (current) SLUUG Administration Install lsb on CentOS. (CMB) |
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| ===== System ===== | ===== System ===== | ||
| + | The ''lsb_release'' command tells us what Linux distribution we're running, as well as the version. Debian comes with it pre-installed, but we have to manually install it on CentOS: | ||
| + | <code> | ||
| + | sudo yum install redhat-lsb | ||
| + | </code> | ||
| + | |||
| The ''locate'' program is great for finding files on the system, without ''find'' having to search through a bunch of directories. | The ''locate'' program is great for finding files on the system, without ''find'' having to search through a bunch of directories. | ||
| <code rootshell> | <code rootshell> | ||
| apt-get install slocate | apt-get install slocate | ||
| /etc/cron.daily/slocate & | /etc/cron.daily/slocate & | ||
| + | </code> | ||
| + | |||
| + | This resolves some issues with Perl complaining about ''LC_ALL''/''LANG''/''LANGUAGE'' when using ''en_US.UTF-8'' encoding. | ||
| + | <code rootshell> | ||
| + | apt-get install locales locales-all | ||
| </code> | </code> | ||
| Line 35: | Line 45: | ||
| <code rootshell> | <code rootshell> | ||
| apt-get install lsof | apt-get install lsof | ||
| + | </code> | ||
| + | |||
| + | The ''htop'' program is an enhanced version of ''top''. | ||
| + | <code rootshell> | ||
| + | apt-get install htop | ||
| </code> | </code> | ||
| Line 91: | Line 106: | ||
| </code> | </code> | ||
| - | ZModem isn't used much any more, but it can be used to send files across an existing SSH (or any other pty) connection. The lrzsz package supports ZModem -- use the ''rz'' command to receive a file. KDE's Konsole provides good ZModem upload support. | + | The ''mtr'' program is an enhanced version of ''traceroute'', with some additional features. We want the "tiny" version, which does not require X11. |
| + | <code rootshell> | ||
| + | apt-get install mtr-tiny | ||
| + | </code> | ||
| + | |||
| + | ZModem isn't used much any more, but it can be used to send files across an existing SSH (or any other pty) connection. The ''lrzsz'' package supports ZModem -- use the ''rz'' command to receive a file. KDE's Konsole provides good ZModem upload support. | ||
| <code rootshell> | <code rootshell> | ||
| apt-get install lrzsz | apt-get install lrzsz | ||
| Line 190: | Line 210: | ||
| GNU Privacy Guard is a clone of PGP. The command-line utility is called ''gpg''. It's now installed by default. | GNU Privacy Guard is a clone of PGP. The command-line utility is called ''gpg''. It's now installed by default. | ||
| - | ==== Logging ==== | ||
| - | Edit ''/etc/logrotate.conf'' to change the ''rotate'' option for ''/var/log/wtmp'' from ''1'' to ''25'', and ''/var/log/btmp'' from ''1'' to ''13''. | ||
| - | |||
| - | This step logically belongs on the [[logging]] or [[security]] pages, but [[logging]] hasn't be updated in three years and is not being used on installations, and [[security]] is mostly dealing with SSL keys. So put it here for now. | ||
| ===== Documentation ===== | ===== Documentation ===== | ||
| Line 227: | Line 243: | ||
| ===== General Customization ===== | ===== General Customization ===== | ||
| - | |||
| ==== motd ==== | ==== motd ==== | ||
| - | Replace symbolic link from ''/etc/motd'' to ''/var/run/motd'' with a file that has the information we want. | + | On Debian, you can't edit ''/etc/motd'' directly and expect it to stay |
| + | because ''/etc/motd'' is just a symbolic link to ''/var/run/motd'' and the | ||
| + | symbolic link is likely to be recreated by future patches from Debian. | ||
| + | ''/etc/init.d/bootmisc.sh'' rebuilds ''/var/run/motd'' on every reboot, using | ||
| + | /etc/motd.tail. So to make a permanent change on Debian systems, | ||
| + | edit ''/etc/motd.tail'', instead of ''/etc/motd'', to put in the information we want. | ||
| <code> | <code> | ||
| - | mv /etc/motd /etc/motd.orig | + | mv /etc/motd.tail /etc/motd.tail.orig |
| - | cat > /etc/motd << EOD | + | cat > /etc/motd.tail << EOD |
| ******************************************************************************* | ******************************************************************************* | ||
| * St. Louis UNIX Users Group XXXXXXXX server running Debian Etch * | * St. Louis UNIX Users Group XXXXXXXX server running Debian Etch * | ||
| Line 247: | Line 267: | ||
| </code> | </code> | ||
| - | Edit the new motd to fill in the server name and change anything needed to match this syste. | + | Edit the new ''/etc/motd.tail'' to fill in the server name and change anything needed to match this system. |
| + | |||
| + | To make the change to ''/var/run/motd'' without a reboot, do the same thing that | ||
| + | ''/etc/init.d/bootmisc.sh'' does: | ||
| + | |||
| + | <code> | ||
| + | uname -snrvm > /var/run/motd | ||
| + | cat /etc/motd.tail >> /var/run/motd | ||
| + | </code> | ||
| ==== issue ==== | ==== issue ==== | ||
build/misc.1210306059.txt.gz · Last modified: 2008/05/08 23:07 by 4.245.76.155
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