Different options of reverting files in Perforce

p4 revert //...
Revert every file you have open, in every one of your pending changelists, to its pre-opened state.

p4 revert -c default //...
Revert every file open in the default changelist to its pre-opened state.

p4 revert -n *.txt
Preview a reversion of all open .txt files in the current directory, but don't actually perform the revert.

p4 revert -c 31 *.txt
Revert all .txt files in the current directory that were open in changelist 31.

p4 revert -a
Revert all unchanged files. This command is often used before submitting a changelist.

File checksum utility for windows Xp

File checksum utility for windows Xp






Refer -  http://support.microsoft.com/kb/841290

This e-mail address is associated with a Nokia Messaging account

Problem
This e-mail address is associated with a Nokia Messaging account


Solution
If you configure mails in Nokia mobiles, your mail address will be linked with your nokia accout. The same email address cannot be configured in another nokia mobile. The solution is to call Nokia customer care and request them to remove the linking for your mail address.

How to count occurrences of a number or text in Excel

To count occurances of a particular number or words in a range of excel cells use formula

=COUNTIF(range,"pattern")
where range is the excel cells range where you want to search for the pattern. pattern can be numbers or words but it should be within double quotes "".

Example - To count number of occurance of word "present" in cells between A1 to A10. frame the formula like below

ex - COUNTIF(A1:A10,"Present")

also you can wildcard characters in the pattern.
Example   =COUNTIF(A1:A9,"*sent")

How to find filetype in windows

There is a utility called "file" in unix which determines filetype  of a file. There is no default similar utility available in windows.  After trying few utilities available online, I found this one more helpful.

http://home.fnal.gov/~jklemenc/dl/filetype.zip

Find more description about the tool at http://home.fnal.gov/~jklemenc/filetype.html

I have posted screenshot of an example

C:\Documents and Settings\tig\Desktop>filetype.exe
FileType.exe
  by: Joe Klemencic
  Copyright 2004

Usage:
   FILETYPE.EXE -i [-r] [-o

] [-v] [-?]

                -i - Inspect a single file or all files in a directory
                -r  - Rename the file with the correct extension (-o ignored)
                -o  - Output path for file copies (creates if not exist)
                -v  - Verbose output
                -?  - This help text


C:\Documents and Settings\tig\Desktop>filetype.exe -i  "Reach Out-participants.pdf"
Reach Out-participants.pdf (.pdf) "Adobe PDF File"

C:\Documents and Settings\tig\Desktop>filetype.exe -i  "Perl One Liners.htm"
Perl One Liners.htm (.txt) "Text file"

C:\Documents and Settings\tig\Desktop>filetype.exe -i  SyncToySetupPackage_v21_x86.exe
SyncToySetupPackage_v21_x86.exe (.exe) "Executable File"

C:\Documents and Settings\tig\Desktop>filetype.exe -i  toolsmanual.dvi
Could not identify toolsmanual.dvi, skipping....

C:\Documents and Settings\tig\Desktop>filetype.exe -i  quickCooking.do
quickCooking.do (.pdf) "Adobe PDF File"

mount error: can not change directory into mount target /mnt/server/

Problem:
mount error: can not change directory into mount target /mnt/server/

Reason:
Either you didn't create your /mnt/server directory or specified it wrong in your mount command.
check the existence of the directory and try the mount command again

Example:
[root@library 20100813143931]# mount -t cifs //192.168.1.2/Release -o username=mohan,domain=priv  /mnt/server/
mount error: can not change directory into mount target /mnt/server/
[root@library 20100813143931]# cd /mnt/server
-bash: cd: /mnt/server: No such file or directory
[root@library 20100813143931]# ls /mnt/
[root@library 20100813143931]# mkdir /mnt/server
[root@library 20100813143931]# mount -t cifs //192.168.1.2/Release -o username=mohan,domain=priv  /mnt/server/
Password:

Maximum length for naming a file in windows

In the Windows explorer the maximum length for naming a file is 260 characters including the drive letter and folders name.
Because windows has a predefined variable called MAX_PATH and its value is set to 260.


So when you try to create or copy a file it will return below error

cp: cannot create regular file    File name too long

sample filename :
C:\hudson\workspace\dev-project-eventsourcelibrary\project\initial\eventsourcelibrary\tmp\normaliser\etc\devices\nsm\reports\Network\Configuration and Policy Management\viewScreen-Security Management\NetScreen-Security Manager - Authentication and Login Events.xml 

So to avoid either you can reduce the characters by trimming the directories name length or use the "\\?\" prefix so that it will allow upto 32,767 characters.

To know more about this, refer microsoft's naming guide.
url-
http://msdn.microsoft.com/en-us/library/windows/desktop/aa365247%28v=vs.85%29.aspx#maxpath
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