How To Check Error Logs In Unix
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2014 in Commands, File system, LinuxI command to check error logs in linux am a new Linux user. I would like how to check logs in linux server to know where are the log files located under Debian/Ubuntu or CentOS/RHEL/Fedora Linux linux /var/log/messages server? How do I open or view log files on Linux operating systems? Almost all logfiles are located under /var/log
How To View Logs In Linux Command Line
directory and its sub-directories on Linux. You can change to this directory using the cd command. You need be the root user to view or access log files on Linux or Unix like operating systems. You can use the following commands to how to check logs in putty see the log files:less commandmore commandcat commandgrep commandtail commandzcat commandzgrep commandzmore commandHow do I view log files on Linux?Open the Terminal or login as root user using ssh command. Go to /var/log directory using the following cd command: # cd /var/log
To list files use the following ls command: # ls Sample outputs from RHEL 6.x server:anaconda.ifcfg.log boot.log-20111225 cron-20131110.gz maillog-20111218 messages-20131103.gz secure-20131027.gz spooler-20131117.gz up2date-20131117.gz anaconda.log btmp cron-20131117.gz maillog-20111225 messages-20131110.gz secure-20131103.gz squid uptrack.log anaconda.program.log btmp-20120101 cups maillog-20120101 messages-20131117.gz secure-20131110.gz swinstall.d uptrack.log.1 anaconda.storage.log btmp-20131101.gz dkms_autoinstaller maillog-20131027.gz mysqld.log secure-20131117.gz tallylog uptrack.log.2 anaconda.syslog collectl dmesg maillog-20131103.gz ntpstats setroubleshoot UcliEvt.log varnish anaconda.yum.log ConsoleKit dmesg.old maillog-20131110.gz prelink spooler up2date wtmp arcconfig.xml cron dracut.log maillog-20131117.gz rhsm spooler-20111211 up2date-20111211 yum.log atop cron-20111211 dracut.log-20120101 messages sa spooler-20111218 up2date-20111218 yum.log-20120101 audit cron-2011121here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads http://stackoverflow.com/questions/15532545/how-to-check-in-each-log-file-in-a-unix-folder-for-error-in-sas-log-files-ar with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How to check in each log file in a UNIX folder for 'ERROR:' in SAS ?Log files are on UNIX up vote 1 down vote favorite Trying to to create a dataset with log file names and correspondig errors how to which contains 'ERROR:' in the log file.Log files are on UNIX and i want to access that unix path on SAS and search for 'ERROR:' string and create a dataset with log file name and Error. I don't have a clue how to achieve that....Any help? Thanks in advance, Sam. Here is an example what I'm looking for.For suppose I have a.log, b.log,c.log,...n.log files under /tcrsk/dev/Logs folder on UNIX.Trying for a program that loops thru all the log files and create a data how to check set with 2 variables like this LOg_Name ERROR_Message a.log ERROR:Missing b.log ERROR:No data set c.log ERROR:A lock is not avialable I guess this example gives more details.... sas share|improve this question edited Mar 21 '13 at 13:07 asked Mar 20 '13 at 19:07 SAS_learner 2511517 Need more information. SAS is in unix, or in windows? How do you access the unix location normally? –Joe Mar 20 '13 at 19:10 @Joe, Yeah SAS is running on UNIX.Folder structure is /tcrsk/dev/Logs.. –SAS_learner Mar 21 '13 at 12:54 add a comment| 2 Answers 2 active oldest votes up vote 3 down vote accepted Without knowing more about your folder structure I can't comment on the first part of the problem. Once the names of your logfiles are known though you can use something like the following. The below code creates 2 datasets. The first is just the complete log, one observation per line in the log. The second dataset contains just those lines that have been identified as 'ERRORS'. Note that I consider certain warnings and note statements as ERRORS as they may hide typos or other syntax or semantic issues with the code: %let logfile = myfile.log; ** ** READ IN LOGFILE. CHECK FOR PROBLEMS *; data problems log; length line $1000; infile "&logfile"; input; logfile = "&logfile"; line_no = _n_; line = _infile_; problem = 0; if ( line =: "ERROR:" or line =: "WARNING:" or line =: "NOTE: Numeric values have been conver