To set up:
wget http://www.tiddlywiki.com/empty.html
firefox file:///`pwd`/empty.html
Done.
<snip>
The easiest way to learn about TiddlyWiki is to use it! Try clicking
on various links and see what happens - you cannot damage
tiddlywiki.com or your browser.
</snip>
Here's something for broadband people that will really speed Firefox up:
1.Type "about:config" into the address bar and hit return. Scroll down and
look for the following entries:
network.http.pipelining network.http.proxy.pipelining
network.http.pipelining.maxrequests
Normally the browser will make one request to a web page at a time. When you
enable pipelining it will make several at once, which really speeds up page
loading.
2. Alter the entries as follows:
Set "network.http.pipelining" to "true"
Set "network.http.proxy.pipelining" to "true"
Set "network.http.pipelining.maxrequests" to some number like 30. This means
it will make 30 requests at once.
3. Lastly right-click anywhere and select New-> Integer. Name it
"nglayout.initialpaint.delay" and set its value to "0". This value is the
amount of time the browser waits before it acts on information it recieves.
If you're using a broadband connection you'll load pages MUCH faster now!
Vaibhav.
Exporting sound :-
Run 'artsd -n -u -p 5001' on system on which u want to hear sound.
Run 'export ARTS_SERVER=ip_of_system_on_which_sound_it_to_be_heard:5001'
on system where sound application will be run (like mplayer)
Run 'mplayer -ao arts soundfile.mp3'
How to set up ssh keys for Linux
1. Run "ssh-keygen -t dsa" on the machine which is the client.
Files Generated :
$(HOME)/.ssh/id_dsa : Your private Key
$(HOME)/.ssh/id_dsa.pub : Your public Key
You can enter empty passphrase.
Type can rsa and dsa for version 2 and rsa1 for version 1.
2. Now ssh into the server.You need to type password this time.
you have to transfer the publickey to server.
cd $(HOME)/.ssh
cat $(HOME)/.ssh/id_dsa.pub >> authorized_keys2
Note : Don't introduce any extra spaces, slashes or any other characters
If the file already exists, append the output of id_dsa.pub to EOF.
3. Repeat for Other machine if you want.
4. Now you can login without entering passwords.
On some machines, it might ask you to verify the host key,
but will happen only for the first time.
Changing MySQL root password
Sometimes you forget the root password, or something went wrong
modifying it. Here's how to reset the root password for mysql on a
Redhat Linux box:
[root@host root]#killall mysqld
[root@host root]#/usr/libexec/mysqld -Sg --user=root &
[root@host root]# mysql
Welcome to the MySQL monitor. Commands end with ; or g.
Your MySQL connection id is 1 to server version: 3.xx.xx
Type 'help;' or 'h' for help. Type 'c' to clear the buffer.
mysql> USE mysql
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> UPDATE user
-> SET password=password("newpassword")
-> WHERE user="root";
Query OK, 2 rows affected (0.03 sec)
Rows matched: 2 Changed: 2 Warnings: 0
mysql> flush privileges;
Query OK, 0 rows affected (0.02 sec)
mysql> exit;
[root@host root]#killall mysqld
Then start MySQL again:
/etc/init.d/mysqld start
------------------------------------------------------------------------------------
Who is SUPER USER in linux
awk -F: '$3 == 0{print $1,"superuser!"}' /etc/passwd
------------------------------------------------------------------------------------
How to get Environment for a process
If the process id is 920.
(cat /proc/920/environ; echo) : tr "\000" "\n"
------------------------------------------------------------------------------------
How to list files with their complete path
If 'childdir' is the name of directory.
find childdir -type f -printf "%AY%Am%Ad%AH%AM %p\n" : sort -r : gawk
'{print $2}'
------------------------------------------------------------------------------------
How to find open files in linux
find /proc -regex "/proc/[0-9]*/fd/.*" -ls
------------------------------------------------------------------------------------
Formatting man pages
man ls : col -bx > myfile.txt
------------------------------------------------------------------------------------
Finding the biggest files
ls -l : sort +4n
------------------------------------------------------------------------------------
Searching files for content
find / -name "filename" : xargs grep -n content
------------------------------------------------------------------------------------
Largest Directories
du -kx : egrep -v "\./.+/" : sort -n
-----------------------------------------------------------------------------------
List today's files only
ls -al --time-style +%D : grep `date +%D`
------------------------------------------------------------------------------------
Encrypt some plain text
perl -e 'print crypt("ke", "password");'
-----------------------------------------------------------------------------------
Look for unusual SUID root files
find / -uid 0 -perm -4000 -print
-----------------------------------------------------------------------------------
Look for unusual large files (> 10 Mb)
find / -size +10000k -print
-----------------------------------------------------------------------------------
How to Search in Google
1. allintitle: graph partition triangle
2. +("index of") +("/ebooks":"/book") +(chm:pdf:zip:rar) +apache
3. allinurl: +(rar:chm:zip:pdf:tgz) TheTitle
4. allinurl:config.txt site:.jp
5. allinurl:admin.txt site:.edu
6. "Index of /something"
7. filetype:doc site:edu
Links:-
http://www.googleguide.com/advanced_operators_reference.html
http://www.google.com/help/operators.html
How to chat without using talk
At Server side:
nc -l -p 5600 -vv
At client Side:
nc 10.100.116.37 5600
Here 10.100.116.37 is the ip of server. 5600 is the port.
How to transfer file with out using ftp
At Server Side:
nc -v -w 30 -p 5600 -l > filename.back
At Client Side:
nc -v -w 2 10.100.116.37 5600 < filename
C: client
S: Server
C:telnet smtp.iitb.ac.in 25
S:220 smtp2.iitb.ac.in ESMTP
C:helo
S:250 smtp2.iitb.ac.in
C:mail from:<root@10.100.106.50>
S:250 ok
C:rcpt to:<guptav@cse.iitb.ac.in>
S:250 ok
C:data
S:354 go ahead
C:Subject: This is subject line.
C:hi vaibhav,
C:how r u? i m fine.
C:bye for now
C:vaibhav
C:.
S:250 ok 1095622024 qp 2471
S:502 unimplemented (#5.5.1)
C:quit
S:221 smtp2.iitb.ac.in
S:Connection closed by foreign host.
SMTP commands are ASCII messages sent between SMTP hosts.
*Command: Description
*DATA: Begins message composition.
*EXPN <string> : Returns names on the specified mail list.
*HELO <domain> : Returns identity of mail server.
*HELP <command>: Returns information on the specified command.
*MAIL FROM <host> : Initiates a mail session from host.
*NOOP : Causes no action, except acknowledgement from server.
*QUIT : Terminates the mail session.
*RCPT TO <user>: Designates who receives mail.
*RSET : Resets mail connection.
*SAML FROM <host> : Sends mail to user terminal and mailbox.
*SEND FROM <host> : Sends mail to user terminal.
*SOML FROM <host> : Sends mail to user terminal or mailbox.
*TURN : Switches role of receiver and sender.
*VRFY <user> : Verifies the identity of a user.