Improved grep version:
% glark
+--
+Grep with highlighting:
-glark grep extract-matches
+% grep --color=auto ...
+% hgrep ...
--
-Highlith
+Extract matches when grepping:
-grepc
-hgrep
+Usage examples:
+% ifconfig | grepc 'inet addr:(.*?)\s'
+% ifconfig | glark --extract-matches 'inet addr:(.*?)\s'
--
Output text as sound:
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
remote host:
% netcat 192.168.0.1 3333
--
+Reverse Shell via SSH:
+
+local host (inside the network):
+% ssh -NR 1234:localhost:22 remote_host
+
+remote host (outside the network):
+% ssh localhost -p 1234
+--
Remove empty directories with zsh:
% rmdir ./**/*(/od) 2> /dev/null
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
# /usr/share/mplayer/scripts/win32codecs.sh
+or
+
+# /usr/share/mplayer/scripts/binary_codecs.sh install
+
+(depending on the mplayer version you have).
+
To play encrypted DVDs and if you are living in a country where using
libdvdcss code is not illegal can install Debian package libdvdread3
and use the script /usr/share/doc/libdvdread3/install-css.sh.
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: $KERNEL-SOURCE/Documentation/laptop-mode.txt
+
+Also take a look at event-viewer(8).
+--
+Display stats about memory allocations performed by a program:
+
+Usage example for 'ls':
+
+% LD_PRELOAD=/lib/libmemusage.so ls > /dev/null
+--
+Use KVM (Kernel-based Virtual Machine for Linux):
+
+Make sure to install the relevant tools:
+# apt-get update ; apt-get install kvm
+# modprobe kvm
+
+Test it with a minimal system like ttylinux:
+# wget http://www.minimalinux.org/ttylinux/packages/bootcd-i386-5.3.iso.gz
+# gzip -d bootcd-i386-5.3.iso.gz
+# kvm -cdrom bootcd-i386-5.3.iso
+--
+EEPROM data decoding for SDRAM DIMM modules:
+
+# modprobe eeprom
+# /usr/share/doc/lm-sensors/examples/eeprom/decode-dimms.pl
+--
+Set up and use DVB:
+
+Make sure your device is supported by Linux and running.
+See http://www.linuxtv.org/ for more details.
+
+If the DVB device works on your system (see 'hwinfo --usb'
+when using a DVB usb device for example), then make sure you
+have the scan util from dvb-utils available:
+
+# aptitude install dvb-utils
+
+Then create a channels.conf configuration file:
+
+% scan /usr/share/doc/dvb-utils/examples/scan/... > ~/.mplayer/channels.conf
+
+You can find some example configuration files on
+your grml system in ~/.channels. Usage example:
+
+% ln -s ~/.mplayer/channels.conf-AT-graz ~/.mplayer/channels.conf
+
+Tip: w_scan (see http://free.pages.at/wirbel4vdr/w_scan/index2.html)
+might be useful if you do not know the initial configuration
+details.
+--
+Get the lastest mercurial snapshot:
+
+Make sure you have the python-dev package available:
+# apt-get update ; apt-get install python-dev
+
+Get and build the source:
+% hg clone http://selenic.com/repo/hg mercurial
+% cd mercurial
+% make local
+% export PYTHONPATH=$(pwd)
+% export PATH=$PATH:$(pwd)
+
+now you should have the newest version of mercurial whenever you execute hg.
+
+To update to the lastest development snapshot, additionally use
+the following commands:
+% hg pull -u http://hg.intevation.org/mercurial/crew
+% make local
+--
projects / grml-tips.git / blobdiff