Nathan Wolfe: What's left to explore?

Louise Fresco on feeding the whole world

Mark Bittman on what's wrong with what we eat

Dan Barber: How I Fell in Love with a Fish

Sherry Turkle: Connected, but alone?

Richard Resnick: Welcome to the genomic revolution

Jeremy Gilley: One day of peace | Video on TED.com

Jeremy Gilley: One day of peace | Video on TED.com

Steps for installing ddd on linux for beginners

Download source code from ddd site and save it. It gets saved in Desktop

Move it to /usr/src

Untar it

Download source code for lesstif

Move it to /usr/src

Untar it

Go to lesstif dir

./configure

Make

Make install

Go to ddd dir

./configure

Make

Make install

Ldconfig /usr/local/lib

ddd

Some useful Linux commands I came across as a beginner and documented for future use

Registering copy of red hat enterprise linux

rhn_register

To extract tar.gz file in cygwin

gunzip -d httpd-2_0_NN.tar.gz

tar xvf httpd-2_0_NN.tar

Cygwin commands

Cygcheck -s

Whereis boost

Cygpath ==> to get corresponding linux path

Cygpath --windows ==> to get corresponding windows path

SVN

svn checkout (or just co) http://xx.xx.xx.xxx/x/xx/trunk /root/xxx/

Svn status ------> to find all the modified files

svn copy http://xx.xx.xx.xxx/x/xx/trunk http://xx.xx.xx.xxx/x/xx/trunk2 -m "comment"

svn ls http://xx.xx.xx.xxx/x/xx/trunk

svn info http://xx.xx.xx.xxx/x/xx/trunk

svn diff http://foo.com/branches/stable http://foo.com/trunk

Grep commands

grep  -iR "" *.* -------> find the text in all the files with ignore case and recursively in subdir

Linux machine access remotely from windows machine

Installing xRDP: http://www.fedoraforum.org/forum/showthread.php?t=193101

Commands for SSH via cygwin:

$ xwin –ac –resize &

$ DISPLAY=:0 ssh –CXYtf root@xxx.xx.xx.xxx  /usr/bin/gnome-session

To get OS configuration

uname -a

Shutdown linux box

Shutdown -h now

Reboot

Current directory

pwd

To start GUI

Startx

Tty?

To copy file remotely (secure copy = scp)

scp root@xxx.xx.xx.xx:/home/xxx/desheu1.tar.gz .

Super user

Su-

Install using super user account

Sudo Yup install xrdp

Sudo Yup install screen

To list running processes and killing one process

Ps -ef | grep "firefox"

Kill -9

To clear the terminal screen

Clear

Installing Java

Yum install java

To find where is the package installed

Type screen

Which screen

Find / screen

listing all the scsi devices on linux box
lsscsi: to list the scsi devices on the local system
>yum install lsscsi
>lsscsi
equivalent on windows is diskpart.exe with LIST DISK command

installing sg_utils
yum install sg_utils
The list of sg utils can be found at http://sg.danny.cz/sg/sg3_utils.html. You can also download the utilties on windows from this site. Utils i tried and which works on both Windows and Linux are like
sg_scan

Some commands to explore
top : similar to task manager in windows
dd: create large files
man (page 1: bash commands, page 2: system calls, page 3: CLIs etc)
ldd: list dependant modules - static list read from a dll or exe
lsmod: list loaded kernel modules
grep, e(xtended)grep and f(ast)grep : to find substrings from a file using regex
find: to find files with regex
ulimit: http://justlearningtoblog.wordpress.com/2010/07/23/enable-core-dump-files-in-fedora/
ifconfig to get the ip and mac address
strace
ptree
df -ah : to check the disk free
du -ah: to list disk usage
mount : to list all the mounted fs


Some questions to answer:
Where does the core dump go for deamons vs CLIs?
http://justlearningtoblog.wordpress.com/2010/07/23/enable-core-dump-files-in-fedora/

shared memory/mapped files/pipes on linux
system calls (fopen vs open)

How to check the list of dynamically loaded libraries in a live process? lsof -p  
(
http://www.akadia.com/services/lsof_intro.html
http://www.unix.com/programming/34498-how-view-loaded-shared-libraries-running-processes-linux.html)

Some cheet sheet for commands:
http://www.pixelbeat.org/cmdline.html

Basic vi editor commands
y - copy
h j k l - arrow left, down, up, right (respectvely)
yy - copy one line
p - paste
:buffers - to list the buffers copied in clipboard
yw - copy one word
yn - copy n lines
ynw - copy n words
0 - go to the start of the line
y0 - copy from current cursor till start of line
$ - go to end of line
y$ - copy from current cursor to end of line
u - undo
dd - delete one line
dj - delete current and line below current line (remember j is the arrow down command)
guu - lowercase
gUU - uppercase