how to view log files in unix

SSH User logon log The Linux login log is in the following directory: The code is as follows Copy Code Cd/var/log To view the login log for an SSH user: The code is as follows Copy Code Less secure

log4j output multiple custom log filesIf you need to output a separate log file in the actual application, how can you separate the required content from the original log and form a separate log file? First look at a common log4j.properties file, which logs log in console a

cannot be found. Instead, the backup is completed directly and 297 backup set is generated, which is different from the situation encountered by the customer.-- After the backup is complete, view the generated backup set[Oracle @ ora10g ~] $ Cd/u01/orabackup/backupsets/[oracle @ ora10g backupsets] $ ll-lrthtotal 1.6g.....other backup sets (omitted)-Rw-r ----- 1 oracle oinstall 606 K Sep 24 ora10g-4175411955_20140924_859118422_297.arc-rw-r ----- 1 ora

Release date: 2010-09-09Updated on: 2010-09-20 Affected Systems:Splunk 4.0-4.1.4Unaffected system:Splunk 4.1.5Description:--------------------------------------------------------------------------------Bugtraq id: 43276CVE (CAN) ID: CVE-2010-3322, CVE-2010-3323 Splunk is a log analysis software running in Unix environment. Splunk XML Parser has a vulnerability in parsing XML internal entity references. R

Oracle manually switches log files and clears log files Oracle switch log file groupLog File groups are used cyclically. When a group of log files is full, the Oracle system automatical

(1) Use log4net to generate log files and log4net log files1. Introduce log4net. dll 1.1 Nuget installation or plugin.2. Configure log4net. config 2.1 Add configSections nodes to the Web. config file. 2.2 add log4net. config (set to always copy to output directory) 2.3 specify log4net. config in the AssemblyInfo. cs File [assembly: log4net.Config.XmlConfigura

Generation Log: All client and server interaction protocols will be placed in this log, and Vugen will then analyze the protocol interaction and eventually generate the script. The recorded Vugen script is generated from this log. If you want to return to the original state after an error or error modification at the end of the recording, you can use the Tools>

function, which is its log function. This Apache log series introduces Apache access logs, error logs, how to analyze log data, how to customize Apache logs, and how to generate statistical reports from log data.If Apache is installed by default, two log

From: http://hi.baidu.com/rocsky/item/9376ef4d002397ea1e19bcd8 I. Aix 1. view the number of CPUs: (1) Since aix5.3, smtctl introduces the SMT (simultaneousmulti-threading) function for power5 machines. It allows two processing threads to run on the same processor, for an operating system, a physical processor logically becomes two processing units (logical processor ). SMT function enabled: the number of logical CPUs is twice the number of physical C

Log Files in centos7 Common Linux Log Files are described as follows:1./var/log/boot. log (self-check process)2./var/log/cron (actions of the child process derived from crontab daemon c

records the query logs according to the order it receives. This may be different from the execution sequence. This is different from the Update log and binary log. They record the log after the query is executed but before any lock is released. (Query logs also contain all statements, while binary logs do not contain statements that only query data ). Server res

permissions.2. The Cron job format is as follows:1 * * * * * command to be executed2 -----3 | | | | | 4 | | | | -----Day of Week (0-7) (sunday=0 or 7)5 | | | -------Month (1-12)6 | | ---------Day of month (1-31)7 | -----------Hour (0-23)8 -------------Minute (0-59)Refer to the usage of the Http://www.cyberciti.biz/faq/how-do-i-add-jobs-to-cron-under-linux-or-unix-oses/,Cron job for details.　　3. How do I check the execution of cron jobs through the lo

To determine whether UNIX systems and library files are 32-bit or 64-bit detailed First, view system 32 or 64-bit system Bootinfo-y View the number of hardware bitsBootinfo-k View kernel digits Second, view the library file is

you want to know what happened inside mysqld, you should use the -- log [= file_name] Or-l [file_name] Option to start it. If the file_name value is not specified, the default name is host_name.log. All connections and statements are recorded in log files. This log may be useful when you suspect that an error occurs o

1. the kernel uses three data structures to indicate opened files. The relationship between them determines the impact of one process on another process in file sharing. (1) each process has a record item (task_struct) in the progress table, including an open file descriptor table (stored in the user space ). Every... 1. the kernel uses three data structures to indicate opened files. The relationship betwe

current offset of each process is recorded in the file table, multiple processes can read one file at a time. However, writing to the same file by multiple processes produces unexpected results and requires atomic operations. For example, multiple processes use the O_APPEND option to open a file. In fact, the write operation in the original version is equivalent to the following form: If (lseek (fd, 0L, 2) Err_sys ("can not seek "); If (lseek (fd, buf, 100 )! = 100) Err_sys ("can not write ")

-digit 4th paragraph is 0101; 64-digit 4th is 0102.-H means 16-in-2-byte integer view, integer high and low bit adjusted (such as 7f45 to 457f);-N 10 means view 10 bytes #od-H-N 32.so0000000 457f 464c 0101 0001 0000 #od-H-N 64.so0000000 457f 464c 0102 0001 0000 Solaris Similar to Linux, only the Linux-h parameter becomes-X. In addition, the results are not the same, Solaris is displayed in byte order, Linux

Tags: mysqlMySQL enable log, view Log MYSQLEnable logging[Email protected]]# whereis My.ini[[Email protected]]# vi/etc/my.cnf[MySQLDdatadir=/var/lib/MySQLsocket=/var/lib/MySQL/MySQL. SockUser=MySQL# Default to using old password format for compatibility withMySQL3.x# clients (those using theMySQLCLIENT10 compatibility package).Old_passwords=1[MySQLD_safe]

encrypted password in a human-readable file poses a security vulnerability, so now the encrypted password is stored in another location, the shadow password mentioned below.On some systems, you can use the finger command to view the password file, and you can use the vipw command to edit the password file.Shadow password--The encrypted password is a copy of the user's password processed by the one-way encryption algorithm, on some systems, the encryp

If you are willing to spend some time on the Linux environment, you should first know where the log files are located and what they contain. Learning about these different log files while your system is working properly can help you find and solve problems in emergencies.The following is a description of the 20