recode ibmpc..lat1 file # convert using recode
echo -e "s/\r//g" > dos2unix.sed; sed -f dos2unix.sed < dosfile > unixfile
--
-Save live stream to file:
+Save live audio stream to file:
-% mplayer -ao pcm -aofile $FILE
+% mplayer -ao pcm:file=$FILE
or
Estable OpenSSL-connection using self-signed-certificate.pem and display certificate:
# openssl s_client -showcerts -CAfile self-signed-certificate.pem -connect www.example.com:443
-Also take a look at make-ssl-cert (debconf wrapper for openssl)
+Generate ssl-certificate for use with apache2:
+
+export RANDFILE=/dev/random
+mkdir /etc/apache2/ssl/
+openssl req $@ -new -x509 -days 365 -nodes -out /etc/apache2/ssl/apache.pem -keyout /etc/apache2/ssl/apache.pem
+chmod 600 /etc/apache2/ssl/apache.pem
+
+Also take a look at make-ssl-cert (debconf wrapper for openssl):
+
+# /usr/sbin/make-ssl-cert /usr/share/ssl-cert/ssleay.cnf /etc/apache2/apache.pem
+
and mod-ssl-makecert (utility to create SSL certificates in /etc/apache/ssl.*/).
--
Change Windows NT password(s):
Create a certificate:
-# make-ssl-cert
+# mkdir /etc/apache2/ssl
+# make-ssl-cert /usr/share/ssl-cert/ssleay.cnf /etc/apache2/ssl/apache.pem
Create a virtual host on port 443:
Enable listening on the HTTPS port (/etc/apache2/ports.conf):
Listen 443
+
+and make sure the SSL module is used:
+
+# a2enmod ssl
--
Useful Apache / Apache2 stuff
Adjust system for use of qemu with kqemu:
Make sure you have all you need:
-# apt-get update ; apt-get install qemu grml-kerneladdons
+# apt-get update ; apt-get install qemu grml-kerneladdons-$KERNELVERSION
Then set up kqemu:
Usage examples:
-# mptstat -P ALL
+# mpstat -P ALL
# iostat -x 1
# iostat -xtc 5 3
# vmstat 1
Sometimes you have lots of packages .deb that you would like to use APT to
install so that the dependencies would be automatically solved. Solution:
-mkdir ~debs
+mkdir debs
dpkg-scanpackages debs /dev/null | gzip > debs/Packages.gz
echo " deb file:/root debs/" >> /etc/apt/sources.list
dpkg-scansources debs | gzip > debs/Sources.gz
This HowTo is also available online at http://grml.org/xen/
--
+Play tetris with zsh:
+autoload -U tetris
+zle -N tetris
+bindkey "^Xt" tetris
+
+Now press 'ctrl-x t'.
+--
+Set up a router with grml
+
+Run grml-router script:
+# grml-router
+
+Install dnsmasq if not already present:
+# apt-get update ; apt-get install dnsmasq
+
+Adjust /etc/dnsmasq.conf according to your needs:
+# cat >> /etc/dnsmasq.conf << EOF
+domain-needed
+bogus-priv
+dhcp-range=19.168.0.124,192.168.0.254,1m # dhcp range
+dhcp-option=3,192.168.0.1 # dns server
+dhcp-option=1,255.255.255.0 # netmask
+EOF
+
+Start dnsmasq finally:
+# Restart dnsmasq
+--
+Find out which process(es) cause the disk to spin up:
+
+# echo 1 > /proc/sys/vm/block_dump
+
+The command sets a sysctl to cause the kernel to log all disk
+writes. Please notice that there is a lot of data.
+
+See: $KERNEL-SOURCE/Documentation/laptop-mode.txt
+
+Also take a look at event-viewer(8).
+--
+Display stats about memory allocations performed by a program:
+
+Usage example for 'ls':
+
+% LD_PRELOAD=/lib/libmemusage.so ls > /dev/null
+--