Adding watermarks into a pdf file

pdftk pdf_file_to_watermark.pdf background image.pdf output out.pdf

How to say Emacs this is an ENTER

I wanted to replace all the newline caracters of an ascii text for a single space. The way to say to emacs in the search/replace menu for the ENTER is ctrl-q ctrl-j, so it understands it is an ENTER character.
It could be good for me to know how to do the same in openoffice and kate

Correct HorizSync & VertRefresh for XFree86 in a ViewSonic E40 Monitor

This values worked sucessfully in my system:


Section "Monitor"
Identifier "Generic Monitor"
HorizSync 30-54
VertRefresh 50-100
Option "DPMS"
EndSection


JavaScript

A ver si esta chanda anda

geexbox & dropbear (sshd): issues

in scripts/gentree add :

mkdir -p $INSTALL/root
mkdir -p $INSTALL/.ssh


in packages/initrd/scripts/linuxrc add:

cp -a "$GEEXBOX/root" /
progress 47000 "copying system into ram"
cp -a "$GEEXBOX/.ssh" /
progress 48000 "copying system into ram"

in packages/dropbear create a directory named init.d and put there the following script, naming it as 51_sshd :

#!/bin/sh
#
# start ssh daemon
#
# runlevels: geexbox, debug

# get options
test -f /etc/network || exit 1
. /etc/network

/usr/bin/dropbear >/dev/null 2>&1 &

exit 0

geexbox & nano mini how-to

In order to include the nano editor inside the geexbox linux distribution, the following steps has to be made:

1. Download the geexbox sources
2. Compile it in order to have a working toolchain
3. In the sources directory create a new directory named nano
4. Download the last distribution of nano from http://www.nano-editor.org/dist/v2.0/nano-2.0.3.tar.gz and put it in the nano directory
   
5. Now in the packages directory, add a directory named nano and create the following files here:
   
   packages/build :
   
   #!/bin/sh
   
   . config/options
   
   $SCRIPTS/build toolchain
   $SCRIPTS/build ncurses
   
   CFLAGS="-L$LIB_PREFIX -lncurses"
   
   cd $BUILD/$1*
   ./configure --host=$TARGET_NAME \
   --build=$HOST_NAME \
   --libdir=$LIB_PREFIX\
   --includedir=$LIB_PREFIX/include\
   --enable-tiny
   make
   
   
   packages/install :
   
   #!/bin/sh
   
   . config/options
   
   cp $BUILD/$1*/src/$1 $INSTALL/usr/bin
   packages/url:
   
   http://www.nano-editor.org/dist/v2.0/nano-2.0.3.tar.gz
6. Nano uses ncurses library, so in the packages/ncurses/install file, add:
   
   $SCRIPTS/build nano
   
   and in the line:
   
   libstrip $SO $BUILD/$1*/lib/libncurses.a "$BUILD/dialog*/dialog $BUILD/util-linux*/fdisk/cfdisk $BUILD/gdb*/objdir/gdb/gdb"
   
   insert:
   
   $BUILD/nano*/src/nano
   
   after ".../gdb"
   
   
7. In scripts/gentree add:
   
   $SCRIPTS/install nano $1
   
   
8. Finally, a make will build a new .iso, including the nano editor