X-Git-Url: https://git.grml.org/?a=blobdiff_plain;f=grml_tips;h=f8334720f923c4ff52f7e32c1756328789573d41;hb=adf933a308269419ba1aa1932dfd25d6822c7202;hp=5f76a920222d393cdfcec41561c3397bdc848631;hpb=7c951e4766122978517cb192135b40445d16b01f;p=grml-tips.git

diff --git a/grml_tips b/grml_tips
index 5f76a92..f833472 100644
--- a/grml_tips
+++ b/grml_tips
@@ -43,12 +43,6 @@ Configure network:
 
 # grml-network
 -- 
-Boot grml via network:
-
-# grml-terminalserver
-
-See: man grml-terminalserver + http://grml.org/terminalserver/
--- 
 Deactivate error correction of zsh:
 
 % NOCOR=1 zsh
@@ -663,7 +657,9 @@ to get a list of all supported trees
 -- 
 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'
 -- 
@@ -1094,7 +1090,7 @@ Avoid all of the above steps - use grml-debootstrap(8) instead!
 -- 
 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:
 
@@ -1278,8 +1274,7 @@ Write a Windows 2000/XP/2003 MBR to device:
 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
@@ -1294,8 +1289,28 @@ Usage examples:
 # 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
 
@@ -2631,6 +2646,8 @@ and where grml is running:
 
 Then booting your client(s) via PXE should work without
 any further work.
+
+See: man grml-terminalserver + http://grml.org/terminalserver/
 -- 
 Debugging SSL communications:
 
@@ -2795,7 +2812,80 @@ Print two pages on one in a PDF file:
 Concatenate, extract pages/parts, encrypt/decrypt,
 compress PDFs using 'pdftk'.
 -- 
-Extract text from PostScript and PDF files:
+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
+-- 
+Blacklist a kernel module:
+
+# blacklist <name_of_kernel_module>
+
+-> running 'blacklist hostap_cs' for example will generate an
+entry like this in /etc/modprobe.d/grml:
+
+blacklist hostap_cs
+alias hostap_cs off
+
+To remove the module from the blacklist again just invoke:
+
+# unblacklist <name_of_kernel_module>
+
+or manually remove the entry from /etc/modprobe.d/grml.
 --