To check the contents of the recovery tape ( assuming the tar archive and 0m/n as device file )
# mt -f /dev/rmt/0mn rew
# mt -f /dev/rmt/0mn fsf 1
# tar tvf /dev/rmt/0m
To extract a file from the archive
# mt -f /dev/rmt/0mn rew
# mt -f /dev/rmt/0mn fsf 1
# tar xvf /dev/rmt/0m
:: Don't try this at work :-)
% cat friendsYou will find on large files that the output of cat will not fit on your screen. The output will scroll across the screen and you will not be able to view the information. The more command is used to display file information in screen sized chunks. If the file is more than one screen long the word -More- followed by the percentage of the file displayed is placed at the bottom of the screen. Press the SpaceBar to see the next screen of the file or press q or
Sally Johnson 123 Ellesmere Lane Athens GA 12876 (413)345-8976
Bob Beamon 913 Mockingbird Lane Annapolis MD 17701 (201)962-8765
Kim Smith 234 Working Street Hollywood CA 18765 (678)987-9876
%
grep [options] string file(s)
Where string is the word, phrase or regular expression you want to find, and file is the file to be searched. Lets find all lines that contain the string Sally in our friends file.
% grep Sally friendsTo find a pattern that is more than one word long, enclose the string within single or double quotation marks.
Sally Johnson 123 Ellesmere Lane Athens GA 12876 (413)345-8976
Sally Miller 510 Epping Way Hobe Sound FL 33455 (654)546-4526
%
% grep 'Sally Miller' friendsSo far we have seen how grep prints all lines which contain the given character string. The -v (invert) option instructs grep to print all lines except those which match the string. This is usefull when you want to remove lines from a file. Lets find all the lines in a file that do not contain the string Sally and place the output into the friends.new file.
Sally Miller 510 Epping Way Hobe Sound FL 33455 (654)546-4526
%
% grep -v 'Sally' > friends.newThe grep command can be used with regular expressions to match a pattern.
% more friends.new
Bob Beamon 913 Mockingbird Lane Annapolis MD 17701 (201)962-8765
Kim Smith 234 Working Street Hollywood CA 18765 (678)987-9876
Eddy Murphy 210 W. Hollywood Los Angles CA 90210 (876)238-9987
%
% grep '26$' friendsThis will find all the lines that end in "26".
Sally Miller 510 Epping Way Hobe Sound FL 33455 (654)546-4526
%
The grep command can search for a string in groups of files. When it finds a pattern that matches in more that one file, it prints the name of the file, followed by a colon before the line matching the pattern. The -i (ignore) option to grep will ignore the case.
% grep -i bob *
friends:Bob Beamon 913 Mockingbird Lane Annapolis MD 17701 (201)962-8765
friends.new:Bob Beamon 913 Mockingbird Lane Annapolis MD 17701 (201)962-8765
%
diff [options] old_file new_file diff [options] old_dir new_dir
The diff command will display a listing of the editing actions that need to be performed on the old file to change it into the new file. The three ways in which diff indicated changes to a file are a (lines are added), c (lines are changed) and d(lines are deleted). Lets find the difference between the friends and the friends.new files.
% diff friends friends.newThis tells us that deletions need to be made to the friends file to get the friend.new file. The 1d0 tells us that line 1 of the friend file has to be deleted, and the 4d2 tells us that line 4 of the friend file has to be deleted.
1d0
< Sally Johnson 123 Ellesmere Lane Athens GA 12876 (413)345-8976
4d2
< Sally Miller 510 Epping Way Hobe Sound FL 33455 (654)546-4526
%
The output of diff can be sent to the ed command to convert the first file into the second. In fact, the using diff with the -e option will produce output suitable for input to the ed command.
% diff -e friends friends.new > ed.scriptIf you eliminated the echo w command, ed would read the input from the cat ed.script, perform the operation and then exit. With the echo w command you are telling ed to write to the file friends. The semicolon between the cat ed.script and echo w tells the shell that these are separate commands.
% ( cat ed.script ; echo w ) | ed friends
415
249
% diff friends friends.new
%
% wc friendsThe first number indicates the number of lines, followed by the number of words and the number of characters(including newlines).
3 28 249 friends
%
sed [options] action/string/newstring file(s)
% sed "s/(201)962-8765/(201)962-9999/" friendsThe s (substitute) option tells sed to substitute. We have changed the phone number. If we wanted to save these changes we would redirect the output to a file.
Bob Beamon 913 Mockingbird Lane Annapolis MD 17701 (201)962-9999
Kim Smith 234 Working Street Hollywood CA 18765 (678)987-9876
Eddy Murphy 210 W. Hollywood Los Angles CA 90210 (876)238-9987
%
The sed command also accepts regular expressions.
% sed '/^$/d' hello.ccThe d option is tells sed to delete. In this case we are using a regular expression to tell sed to remove all blank lines from our hello.cc file.
#include
main() {
cout << "Hello, cruel world! \n";
}
%
% sort +1 friendsThe +1 option tells sort to use the second field of the sort key rather than the beginning of the line. Fields are separated by whitespace, however you can use the -t option to separate by any character. The -n options tells sort to sort a numeric key, otherwise it will sort by the corresponding ASCii values.
Bob Beamon 913 Mockingbird Lane Annapolis MD 17701 (201)962-8765
Eddy Murphy 210 W. Hollywood Los Angles CA 90210 (876)238-9987
Kim Smith 234 Working Street Hollywood CA 18765 (678)987-9876
%
Another command that is usefull when you are sorting is the uniq command. The uniq command will write only one instance of each line, whereas the sort will print every line. Usually the output of the sort command is piped to the uniq command.
Before you change the IP Address of your Server you must have all new ip's
when you want to go ahead.(of course..:-))
ex. Server ip and package ip.
Take backup of these directory and files
1./etc/cmcluster
2./etc/hosts
3./etc/rc.config.d/netconf
modify these files
1./etc/hosts # modify ipaddress
2./etc/rc.config.d/netconf # modify ipaddress and subnet
3./etc/cmcluster/cluster.conf # modify HEARTBEAT_IP
4./etc/cmcluster/packge/cipackage.conf # change SUBNET XX.XX.XX.XX
5./etc/cmcluster/packge/dbpackage.conf # change SUBNET XX.XX.XX.XX
6./etc/cmcluster/packge/cipackage.cntl # change IP[0]=XX.XX.XX.XX
change SUBNET[0]=XX.XX.XX.XX
7./etc/cmcluster/packge/cipackage.cntl # change IP[0]=XX.XX.XX.XX
change SUBNET[0]=XX.XX.XX.XX
8.rcp cluster.conf into /etc/cmcluster
rcp cluster.conf into other node same location
9.rcp these conf,cntl and config file into /etc/cmcluster/packge/
rcp ciVRP.conf,dbVRP.conf,ciVRP.cntl,dbVRP.cntl
10. restart the net for new ip
/sbin/init.d/net stop
/sbin/inti.d/net start
check all ipaddress which we have changed and check with linkloop also
11.cmcheckconf -v -C /etc/cmcluster/cluster.conf -P cipackage.conf -P dbpackage.conf
it should come with no error then go for the next step
12.cmapplyconf -v -C /etc/cmcluster/cluster.conf -P cipackage.conf -P dbpackage.conf
warning : ninenok is not liable if its not working for you!
pls. pray before doing this.
F.
