Removing the vim error: viminfo: Illegal starting char in line

Find hidden file .viminfo in your home and rename to viminfo-backup. It will be recreated automatically.

This file contains the history of all the vim editor records i.e the files edited and the arguments you used inside the editor etc. 

From ref http://www.golinuxhub.com/2014/04/how-to-fix-e575-viminfo-illegal.html

Arduino:: How to begin and do it yourself

http://arduino.cc/
http://arduino.vn/
http://www.hshop.vn/arduino/arduino%20lv2

• 30 Arduino Projects for the Evil Genius
• Arduino Adventures
• Arduino Cookbook
• Arduino - A Quick-Start Guide
• Arduino Workshop
• Beginning Arduino Programming
• Beginning C For Arduino

Google Chrome:: --purge-memory-button

Open up the shortcut for Chrome (if Pinned on Windows 7, Shift+Right-Click for the context menu), and then add the following—note that there should be two dashes there.

http://www.howtogeek.com/howto/7416/how-to-purge-memory-in-google-chrome/


For another Dropbox multiple acc

OpenNX

About OpenNX

OpenNX is an open source drop in replacement for NoMachine's NX client. It is compatible to the original client in that it uses the same syntax for the session configuration files (.nxs files). OpenNX is distributed under the GNU Lesser Public License v2.1. OpenNX is written in C++ and uses the excellent wxWidgets toolkit. Compared to the original client, it also adds some additional features which improve usability: Ability to use the OpenSC framework to enable SmartCard based authentication for the initial SSH connection. Ability to use a variety of different proxy types. Ability to fetch session configuration files via http (read only) Ability to disable configuration controls by providing a read only configuration file. Dynamic use of libsmbclient, libcups, libopensc and pulseaudio (no static dependencies). Uses libjpeg-turbo for speed improvement (if available).

get full hostname and domain name

check-hostname | awk '{ print $NF }'

domainname

Keep your Facebook friends close

Keep your Facebook friends close — and your enemies closer
Friend of Foe: FoF

Basic types of Unix shell

• Bourne shell (sh)
• C shell (csh)
• TC shell (tcsh)
• Korn shell (ksh)
• Bourne Again SHell (bash)

If that's not the case, next time you got a command that you're not sure
about (from a script for example), paste it to explainshell.com. It may
be quicker to learn shell this way.




Ref: http://unixhelp.ed.ac.uk/shell/oview2.html

Link to X services

facebook friends: Phuong Khanh TaoVui PVCuong77 Nil MacXinh AjiIkeya diepnv.epu nqlamtung nguyen.vantuyen.50364

n04cogo88mdb@m.youtube.com


Link to youtube: Google+

Apple check serial number status

Check Your Service and Support Coverage

Review your Apple warranty status and eligibility for support and extended coverage.

Link https://selfsolve.apple.com/agreementWarrantyDynamic.do or shotcut

Apple iCloud setup for Thunderbird

Mail server settings

Refer to your email app's documentation for information about how to use these settings. iCloud Mail uses the IMAP and SMTP standards supported by most modern email apps. iCloud does not support POP.

IMAP information for the incoming mail server

• Server name: imap.mail.me.com
• SSL Required: Yes
  If you receive errors when using SSL, try using TLS instead.
• Port: 993
• Username: The name part of your iCloud email address (for example, emilyparker, not emilyparker@icloud.com)
• Password: Your iCloud password

SMTP information for the outgoing mail server

• Server name: smtp.mail.me.com
• SSL Required: Yes
  If you receive errors when using SSL, try using TLS or STARTTLS instead.
• Port: 587
• SMTP Authentication Required: Yes
• Username: Your full iCloud email address (for example, emilyparker@icloud.com, not emilyparker)
• Password: Your iCloud password

Ref: http://support.apple.com/kb/ht4864?viewlocale=fr_fr

KB2919355 for Windows 8.1

Windows 8.1 Update for x64-based Systems

1. To start the download, click the Download button and then do one of the following, or select another language from Change Language and then click Change.
• Click Run to start the installation immediately.
• Click Save to copy the download to your computer for installation at a later time.
2. These KB's must be installed in the following order: KB2919442, KB2919355, KB2932046, KB2959977, KB2937592, KB2938439, and KB2934018.
3. KB2919442 is a prerequisite for Windows 8.1 Update and should be installed before attempting to install KB2919355

Ref: http://www.microsoft.com/en-us/download/confirmation.aspx?id=42335

Install Telnet Client by using a command line

pkgmgr /iu:"TelnetClient"

Applied to Windows 7, Windows Server 2008 R2, Windows Server 2008 or Windows Vista

Package Manager Command-Line Options


The following command-line options are available for Package Manager.

pkgmgr.exe [/?] [/h] [/help] [/l:file_name] [/ip] [/iu:Windows_feature_name] [/m:package_directory] [/n:answer_file] [/norestart] [/o:system_drive_path; offline_Windows_directory_path] [/p:package_name] [/quiet] [/s:sandbox_directory] [/up:package_name] [/uu:Windows_feature_name]

Ref: http://technet.microsoft.com/en-us/library/cc749465(v=ws.10).aspx

"Clock skew detected" issue

Clock skew detected
Warning: File `main.cpp' has modification time 381 s in the future make: warning: Clock skew detected. Your build may be incomplete.

the message "Clock skew detected" is most commonly given if compiling sources located on an NFS mount and the NFS server's clock runs ahead the client's clock doing the compilation.
A possible solution is to "touch" every file in the source tree in order to update timestamps: go to the root of the subtree an do "find . -exec touch {} \; "

Then "make clean"and retry compilation

PCmover: free data transfer from WinXP to Win8.1

Laplink PCmover Express for Windows XP is an easy way to move your files, settings and user profiles from your old Windows XP computer to your new Windows PC
http://www.microsoft.com/windows/en-us/xp/transfer-your-data.aspx

Outlook 2010: MobileMe Services issue

MobileMe Services has encountered a problem

then I am prompted to send an error report (2x) then I am into Outlook and can work normally.

In the end, I simply renamed C:\Program Files\Common Files\Apple\Mobile Device Support\OutMMe32.dll to OutMMe32.dll.orig

C shell basic

The C Shell recognizes the following operators, in order of precedence.

     ()       - parenthesis - change order of evaluation
     -        - unary minus/negation
     ~        - one's complement
     !        - logical negation
     %        - remainder
     /        - divide
     *        - multiply
     -        - subtract
     +        - addition
     >>       - shift right
     <<       - shift left
     >        - greater than
     <        - less than
     >=       - greater than or equal
     <=       - less than or equal
     !=       - not equal to (strings)
     ==       - equal to (strings)
     &        - bitwise AND 
     ^        - bitwise exclusive OR
     |        - bitwise inclusive OR
     &&       - logical AND
     ||       - logical OR

Ref: 1 2

Alias server name for SSH

Use file ~/.ssh/config

example content:

Host altonjuve
    HostName 
    User alton





tcpdump:: how to

tcpdump -i tap24 -lnXXvs0 udp port 15001
tcpdump -r /tmp/cpub -lnXXvs0 udp port 6003|less
tcpdump -i eth1 -lnXXvs0 vlan 1169 -w /tmp/12345
tcpdump -lnvs0 vlan 1169 -r /tmp/12345|less
tcpdump -lnvXvs0 vlan 1169 -r /tmp/12345|less
tcpdump  -r /tmp/1234 -lnXXvs0|strings
/550 to search 550

/usr/sbin/tcpdump -r /tmp/zzzz -ln
/usr/sbin/tcpdump -r /tmp/zzzz -ln|grep -v 20002
/usr/sbin/tcpdump -r /tmp/zzzz -ln|less
/usr/sbin/tcpdump -r /tmp/zzzz -ln tcp|less

/usr/sbin/tcpdump -r /tmp/zzzz -ln tcp|tail
tcpdump -s 0 -w /tmp/zzzz -i br13 -ln
tcpdump -i eth4 -w /tmp/abc tcp port 12345

strace to help debug issues

good to see: 1 2 good
Strace monitors the system calls and signals of a specific program. It is helpful when you do not have the source code and would like to debug the execution of a program. strace provides you the execution sequence of a binary from start to end.

Running UNIX shell commands from vim

To run a single UNIX command use the command:

   :!UNIX_command

You can start a shell from within vi and use it as you would your usual UNIX environment, then exit the shell and return to vi
To start up a shell enter the command:

   :sh

The type of shell that is started is determined by the $SHELL variable. You can specify that some other shell is to be started by setting the vi shell option
Return to using vi by entering the command exit or Ctrl-D

Shell Functions

---

:! cmd	Executes shell command cmd; you can add these special characters to indicate:% name of current file# name of last file edited
!! cmd	Executes shell command cmd, places output in file starting at current line
:!!	Executes last shell command
:r! cmd	Reads and inserts output from cmd
:f file	Renames current file to file
:w !cmd	Sends currently edited file to cmd as standard input and execute cmd
:cd dir	Changes current working directory to dir
:sh	Starts a sub-shell (CTRL-d returns to editor)
:so file	Reads and executes commands in file (file is a shell script)
!Motion_cmd	Sends text from current position to Motion Command to shell command cmd
!}sort	Sorts from current position to end of paragraph and replaces text with sorted text

Displaying vi option values

To display the current value of all options enter the command:

:set all

To display the value of those options whose values have been reset from their default enter the command:

:set

Change an option value temporarily

To change a the value of an option temporarily:

   :set option_name

or:

   :set option_name=value

This sets the value of the option until you quit vi.

Change an option value permanently

To make a lasting change, create a file named .exrc, containing the set commands, in your home directory. The next time you use vi these options will take effect and will remain in force until you edit the .exrcfile to change them.

You can, of course, temporarily change the value of any option.

Examples of setting vi options permanently

1. To set a number of options place the set commands in the file .exrc.

   set ic
   set number
   set sh=/usr/local/bin/Tcsh
   set wm=5

This sets vi to:

   - ignore the case of characters in searches
   - display line numbers
   - use the TC shell to execute UNIX commands
   - wrap text five characters from the right edge
     of the screen

2. Options can also be set using the environment variable EXINIT.

   setenv EXINIT 'set ic number sh=/usr/local/bin/Tcsh wm=5'

For the C and TC shell user, this sets the same options as in the example above.

If there is a .exrc file owned by you in your home directory or the current directory, vi will take its option values from this and not from the EXINIT environment variable.