how to view log files in unix

Tags: log use callamdmain Login ssiobjada A Path to Oracle log: Login: Sqlplus "/as sysdba" View path:sql> select * from V$logfile; Sql> select * from V$logfile; (#日志文件路径) two. What the Oracle log file contains: (The number of logs may vary slightly) Control01.ctl example01.dbf redo02.

If the MySQL server has binary logging enabled, you can use the Mysqlbinlog tool to recover data starting at a specified point in time (for example, from your last backup) until now or another specified point in time. "Mysqlbinlog: Utility for processing binary log files." To recover data from a binary log, you need to know the path and file name of the current

1. Error logUse the –log-error[=file_name] option to specify where MYSQLD saves the error log file. If the file_name value is not given, MYSQLD uses the error log name Host_name.err and writes to the log file in the data directory. If you perform FLUSH LOGS, the error log re

lines.Head-n -10 test.log query log file except for all other logs in the last 10 lines; 12345 Grep grep[options] main parameter: [options] Main parameter: -c: Output only the count of matching rows. -i: does not distinguish between large lowercase (applies to single-character only). -h: File name is not displayed when querying multiple files. -l: Only file names that contain matching charac

/var/log/wtmp: Log The account information of the correct login system and the account information used in the login errorHere we use Lastlog to look at the format of the log: you can see the login user name, the use of the terminal has been logged on the date.[Email protected]:/var/log# lastlog | grep rootRoot tty1 We

Next I will introduce the log files in Linux: Services with General logs include access logs and error instructions. Access logs generally record the service running status and operations performed by the Service, which are recorded in access logs; the error log can also be understood by name. When an error occurs in the service, the error

process. This process is responsible for writing the content of the log buffer to the redo logfile, the trigger conditions are as follows:◆ When the commit command is issued ◆ when the space of log buffer is full to 1/3 or when the space of log buffer is full of 1 MB of records ◆ when every 3 seconds times out ◆ when before DBWn writes data

Tags: style blog http color io os using AR strongView Purpose:The error log is viewed to ensure that the process has completed successfully (for example, backup and restore operations, batch commands, or other scripts and procedures). This can help detect any current or potential problems, including automatic recovery of information (especially if the SQL Server instance has stopped and restarted), kernel information, or other server-level error messa

Database Home > Related LinksRELATED LINKS) "Area >" Alert Log Content (Alertlog content) " View Alert logs Each database has a alert_if $oracle_base is set, this file is stored by default in the$ORACLE the _base/diag/rdbms/Database alert files are log files th

ADB commandSwitch to the path to the directorycd/root/docements Switch to Directory/root/docementsCD./path switch to the path directory in the current directory, "." Represents the current directoryCd.. /path switch to the path directory of the upper directory. “.” Represents a previous level of directoryls commandcommands for viewing files and directoriesLS-L lists Long data strings, including file attributes and permission data.Ls-a list all

Please indicate the source when this log is reprinted; otherwise, you will be held accountable! Rsync Introduction Rsync is an application software in Unix. It can synchronously update files and directories of two computers and use differential encoding to reduce data transmission. An important feature in rsync that is not seen in most similar programs or prot

/3306/data/mysql.log /usr/local/mysql/bin/mysqld, Version: 5.5.32-log (Source distribution). started with: Tcp port: 3306 Unix socket: /data/3306/mysql.sock Time Id CommandArgument 180213 1:11:05 25 Query create database nn We're looking at the statement that I just created the library. (3) Slow query adjustment (important, optimize SQL statements to do incremental backup master-slave synchronization

We know that any data operation will be recorded in the redo log file. Before 8i, we were unable to view the content in the redo file. However, after 9i, Oracle launched logminer, through logminer analysis, we can clearly view any Oracle operations, such as deleting a table and viewing detailed operation records in logminer. 1. to use logminer, run the following

Command: Jstack (View Thread), Jmap (view memory), and Jstat (profiling) commandsThese commands must perform the EQ under the Linux JDK bin path:./jstack 10303 If you want to print the content into text, the./jstack 10303 >111.log Print to a 111.log file, and then SZ 111.log

use the system to call syslog To retrieve these messages. You can use the dmesg tool or the klogd daemon to retrieve these messages. Proc is a memory file system. Each time you read a file, kmsg is actually a circular buffer inside the kernel. After each read, the circular buffer is considered to have been processed (that is, it turns into invalid content), so it is normal for you to read it empty again. Why is it so much like this? The circular buffer size is limited, the kernel may write some

lists all submissions in the last two weeks:$ git log --since=2.weeksYou can give a variety of time formats, such as specific days ("2008-01-15"), or how long ago ("2 years 1 day 3 minutes ago").You can also give some search criteria to list the submissions that are eligible. --authorDisplays the submission of the specified author with options and --grep searches for the keywords in the submission description with options. (Note that if you want to h

10 URL:Cat Access_log | grep "19/may/2010:00" | awk ' {print $} ' | Sort | uniq-c | Sort-nr | Head-n 10 6, with tcpdump Sniff 80-port access to see who's the tallestTcpdump-i ETH0-TNN DST Port 80-c 1000 | Awk-f "." ' {print $. ' $ "." $ "." $} ' | Sort | uniq-c | Sort-nr Then from the log to see what the IP is doing:Cat Access_log | grep 220.181.38.183| awk ' {print '/t ' $} ' | Sort | uniq-c | Sort-nr | Less 7,

mysql to close and re-open a file to record the logs. Of course, the system will automatically add a suffix (such. 00001 ,. 00002). Run the mysql> flush logs statement in the mysql environment; alternatively, run the mysqladmin administrative Program # mysqladmin flush-logs or # mysqladmin refresh. 2. Configure the mysql Log to start the database in mysqld_safe mode, followed by the option parameter, you can also configure it in the configuration fil

1, first switch to: CD usr/local/tomcat5/logs 2, Tail-f Catalina.out 3, this operation can be real-time view of the running log CTRL + C is the exit Tail command. By the way, Linux tail commands The tail command writes the file to the standard output from the specified point. Using the-f option of the tail command makes it easy to refer to the changing log f

Utility Commands: View the Tomcat run log Tail-f Catalina.out View logs with keyword search Cat Jeewx-2015-09-20.log | grep Verification Code Viewing a fixed time log Cat Jeewx-2015-09-20.