# grml-network
--
-Boot grml via network:
-
-# grml-terminalserver
-
-See: man grml-terminalserver + http://grml.org/terminalserver/
---
Deactivate error correction of zsh:
% NOCOR=1 zsh
or
% mencoder mms://file.wmv -o $FILE -ovc copy -oac copy
+
+or
+
+% mimms mms://file.wmv
--
Merge video files:
--
Transfer your SSH public key to another host:
-% ssh-copy-id -i ~/.ssh/id_dsa.pub user@remote-system
+% ssh-keygen # if you don't have a key yet
+[...]
+% ssh-copy-id -i ~/.ssh/id_rsa.pub user@remote-system
or
% cat $HOME/.ssh/id_rsa.pub | ssh user@remote-system 'cat >> .ssh/authorized_keys'
--
--
Convert files from Unicode / UTF-8 to ISO:
-% iconv -f utf8 -t iso-8859-15 < utffile > isofile
+% iconv -c -f utf8 -t iso-8859-15 < utffile > isofile
and vice versa:
Use a Vodafone 3G Datacard (UMTS) with Linux:
Plug in your vodafone card and check in syslog whether the appropriate
-(probably /dev/ttyUSB0 or /dev/noz0 when using newer vodafone cards) has
-been created. If so run:
+(probably /dev/ttyUSB0 or /dev/noz0) has been created. If so run:
# gcom -d $DEVICE
# wvdial --config /etc/wvdial.conf.umts $PROFILE
# gcom -d /dev/noz0
# wvdial --config /etc/wvdial.conf.umts dreiusb
-Notice: newer vodafone cards require the nozomi driver. Run 'modprobe nozomi' on
-your grml system.
+If you receive invalid DNS nameservers when connecting, like:
+
+[...]
+--> primary DNS address 10.11.12.13
+--> secondary DNS address 10.11.12.14
+
+just provide a working nameserver to resolvconf via:
+
+# echo "nameserver 80.120.17.70" | resolvconf -a ppp0
+
+Notice: some vodafone cards require the nozomi driver (run 'modprobe nozomi' on
+your grml system), some other ones require the sierra driver (run
+'modprobe sierra').
+
+If your device isn't supported by usbserial yet, manually provide vendor and
+product ID when loading the usbserial module. Usage example:
+
+% lsusb
+[...]
+Bus 004 Device 008: ID 1199:6813 Sierra Wireless, Inc.
+
+# modprobe usbserial vendor=0x1199 product=0x6813
--
hdparm - get/set hard disk parameters
Then booting your client(s) via PXE should work without
any further work.
+
+See: man grml-terminalserver + http://grml.org/terminalserver/
--
Debugging SSL communications:
# modprobe cloop file=/path/to/cloop/file
# mount -r -t iso9660 /dev/cloop /mnt/test
--
+Create a PS/PDF of a plaintext file:
+
+% a2ps --medium A4dj -E -o output.ps input_file
+% ps2pdf output.ps
+--
+Print two pages on one in a PDF file:
+
+% pdfnup --nup 2x1 input.pdf
+
+Concatenate, extract pages/parts, encrypt/decrypt,
+compress PDFs using 'pdftk'.
+--
+Read a PS/PDF file on console:
+
+% pstotext file.pdf
+
+or on plain framebuffer console in graphical mode:
+
+% pdf2ps file.pdf ; ps2png file.ps file.png ; fbi file.png
+
+or
+
+% fbgs file.pdf
+--
+Bypass the password of a PDF file:
+
+% gs -q -dNOPAUSE -sDEVICE=pdfwrite -sOutputFile=output.pdf input.pdf -c quit
+--
+Record sound:
+
+% rec test.aiff
+
+This will record a AIFF audio file.
+--
+Change passphrase / password of an existing SSH key:
+
+% ssh-keygen -p
+--
+Enable syntax highlighting in nano:
+
+Just uncomment the include directives for your respective
+language at the bottom of the file /etc/nanorc
+--
+Create netboot package for grml-terminalserver:
+
+# sh /usr/share/doc/grml-terminalserver/examples/create-netboot
+--
+Rotate pictures:
+
+Using the 'Orientation' tag of the Exif header, rotate
+the image so that it is upright:
+% jhead -autorot *.jpg
+
+Manually rotate a picture:
+% convert -rotate 270 input.jpg output.jpg
+--
+Rename files based on the information inside their exif header:
+
+% jhead -n%Y-%m-%d_%Hh%M_%f *.jpg
+
+This will rename a file named img_2071.jpg to something like:
+
+2007-08-17_10h38_img_2071.jpg
+
+if it was shot at 10:38 o'clock on 2007-08-17 (according to
+the information inside the exif header).
+--
+Calculate network / netmask:
+
+Usage examples:
+% ipcalc 10.0.0.28 255.255.255.0
+% ipcalc 10.0.0.0/24
+--