Hi! I'm trying to find a way to extract a certain amount of lines from a log file. This would allow me to "follow" a web user through our log files.
Here is a sample fake log file to explain what i want to accomplish :
BEGIN REQUEST sessionID=123456
boatload of lines for thread-1 detailing... (8 Replies)
Hi all,
I have a data file from which i would like to extract only certain fields, which are not adjacent to each other. Following is the format of data file (data.txt) that i have, which has about 6 fields delimited by "|"
HARRIS|23|IT|PROGRAMMER|CHICAGO|EMP
JOHN|35|IT|JAVA|NY|CON... (2 Replies)
Hi All,
I need to extract 543 from the command below :
# pvscan
PV /dev/sdb1 VG vg0 lvm2
Total: 1 543.88 GB] / in use: 1 / in no VG: 0
I have the following command which does the job, but I think this could be achieved in a more simple way using sed or awk. Any help is... (7 Replies)
Hi,
I am trying to extract the first and last lines for each unique item in column 2 of a large text file and then concatenate all extracted lines together in a new text file.
So ... I want to go from this format:
NEW 0088-BPM 1.042700e+04 877168.19 9718360.00 1496.00
NEW 0088-BPM... (5 Replies)
Hello everybody,
Here is my problem : I cannot find a way to extract data from a particular file and more precisely I cannot extract the result of my awk script to an external file because I am currently working on HP-UX.
I would like a simple script (without awk) which asks for a date like... (4 Replies)
Hello
does anyone know of an awk that will extract log file entries between a specific date and time range, eg:
awk '/15\/Dec\/2010:16:10:00/, /15\/Dec\/2010:16:15:00/' access_log
but one that works?
Or a free command line log file analysis tool/script?
I'd like to be able to view... (2 Replies)
Hi,
I have a file like this-
aa
12
23
34
aa
21
34
56
aa
78
45
56
I want to print out only the lines after the last aa. How do I do this? I tried using grep -A and sed -n, but both didnt work as I wanted to.
Could someone help me out please.. (3 Replies)
Hi,
I need some help in getting extracting the specific horizontal and vertical texts in a single line. I am trying to extract few of the parameters from a config file. Your help is appreciated.
Desired Output
----------------
Pool members members ... (4 Replies)
fitted parameters initialized with current variable values (0 Replies)
Discussion started by: kayak
0 Replies
LEARN ABOUT NETBSD
begin
BEGIN(7) SQL Commands BEGIN(7)NAME
BEGIN - start a transaction block
SYNOPSIS
BEGIN [ WORK | TRANSACTION ] [ transaction_mode [, ...] ]
where transaction_mode is one of:
ISOLATION LEVEL { SERIALIZABLE | REPEATABLE READ | READ COMMITTED | READ UNCOMMITTED }
READ WRITE | READ ONLY
DESCRIPTION
BEGIN initiates a transaction block, that is, all statements after a BEGIN command will be executed in a single transaction until an
explicit COMMIT [commit(7)] or ROLLBACK [rollback(7)] is given. By default (without BEGIN), PostgreSQL executes transactions in ``autocom-
mit'' mode, that is, each statement is executed in its own transaction and a commit is implicitly performed at the end of the statement (if
execution was successful, otherwise a rollback is done).
Statements are executed more quickly in a transaction block, because transaction start/commit requires significant CPU and disk activity.
Execution of multiple statements inside a transaction is also useful to ensure consistency when making several related changes: other ses-
sions will be unable to see the intermediate states wherein not all the related updates have been done.
If the isolation level or read/write mode is specified, the new transaction has those characteristics, as if SET TRANSACTION [set_transac-
tion(7)] was executed.
PARAMETERS
WORK
TRANSACTION
Optional key words. They have no effect.
Refer to SET TRANSACTION [set_transaction(7)] for information on the meaning of the other parameters to this statement.
NOTES
START TRANSACTION [start_transaction(7)] has the same functionality as BEGIN.
Use COMMIT [commit(7)] or ROLLBACK [rollback(7)] to terminate a transaction block.
Issuing BEGIN when already inside a transaction block will provoke a warning message. The state of the transaction is not affected. To
nest transactions within a transaction block, use savepoints (see SAVEPOINT [savepoint(7)]).
For reasons of backwards compatibility, the commas between successive transaction_modes can be omitted.
EXAMPLES
To begin a transaction block:
BEGIN;
COMPATIBILITY
BEGIN is a PostgreSQL language extension. It is equivalent to the SQL-standard command START TRANSACTION [start_transaction(7)], whose ref-
erence page contains additional compatibility information.
Incidentally, the BEGIN key word is used for a different purpose in embedded SQL. You are advised to be careful about the transaction
semantics when porting database applications.
SEE ALSO
COMMIT [commit(7)], ROLLBACK [rollback(7)], START TRANSACTION [start_transaction(7)], SAVEPOINT [savepoint(7)]
SQL - Language Statements 2010-05-14 BEGIN(7)