11/14/2023 0 Comments Cat grep multiple strings![]() ![]() Save my name, email, and website in this browser for the next time I comment. ![]() Your email address will not be published. Command to find “ERROR” or “DEBUG” in applicationLog.log file 14:20:13.966 INFO-DEBUG 1051 - o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path onto handler of type ġ. 14:20:13.921 INFO 1051 - s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped “” onto public .ModelAndView .(, 14:20:13.807 DEBUG 1051 - s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for startup date root of context hierarchy 14:20:13.441 INFO 1051 - o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: ‘requestContextFilter’ to: 14:20:13.436 WARNING 1051 - o.s.b.w.servlet.ServletRegistrationBean : Mapping servlet: ‘dispatcherServlet’ to 14:20:13.240 INFO 1051 - o.s. : Root WebApplicationContext: initialization completed in 2629 ms ![]() : Initializing Spring embedded WebApplicationContext Skipping unneeded JARs during scanning can improve startup time and JSP compilation time. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. 14:20:13.227 INFO 1051 - .TldScanner : At least one JAR was scanned for TLDs yet contained no TLDs. 14:20:12.725 INFO 1051 - .StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.14 14:20:12.697 ERROR 1051 - s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http) :: Spring Boot :: (v1.5.3.RELEASE) 14:20:10.519 INFO 1051 - o.a.j.SpringBootHelloWorldApplication : Starting SpringBootHelloWorldApplication on apples-MacBook-Air.local with PID 1051 (/Users/apple/Documents/WorkspaceAlgo/SpringBootHelloWorldExample/target/classes started by apple in /Users/apple/Documents/WorkspaceAlgo/SpringBootHelloWorldExample) Let’s say your application is deployed on linux machine and you need do analysis of log file and you need to find lines with the specific words in it.įor example: you want to find all the lines with “ WARNING” or “ DEBUG” words in it. In this post, we will see how to grep multiple Strings in linux. 5.Command to find “ERROR” or “DEBUG” in all logs files in the current folder in applicationLog.log file.In brief, both of these commands accomplish finding multiple strings: using the or condition grep ‘hello\fizz’ myfile.txt using -e grep -e. In other words, running multiple grep in one line. Display 4 lines after dropped word matched in firewall log file. Similarly, display the lines after your matches by passing the -A to the grep: grep -A NUM 'string' /path/to/file. $ grep -i ‘DEBUG\|ERROR’ applicationLog.log Grep is a command line utility useful for many text-based search tasks, including searching for two or more strings or regular expressions. Try passing the -B to the grep: grep -B NUM 'word' file.4.Command to find “ERROR” or “DEBUG” witn case insensitive in applicationLog.log file in applicationLog.log file.$ grep -n ‘INFO.*DEBUG\|DEBUG.*INFO’ applicationLog.log.This will miss instances where the string occurs 2+ times on one line, though. This will list each occurrence on a single line and then count the number of lines. Command to find “INFO” and “DEBUG” with line number in applicationLog.log file. Instead of using -c, just pipe it to wc -l. $ grep ‘INFO.*DEBUG\|DEBUG.*INFO’ applicationLog.log.Command to find “INFO” and “DEBUG” in applicationLog.log file. $ egrep ‘DEBUG|ERROR’ applicationLog.log.$ grep ‘DEBUG\|ERROR’ applicationLog.log. ![]() When printed as-is, those delete characters hide the three-character "gap" string.Īnother option would be to pipe the output through od, perhaps. Where the ^?^?^? characters represent three "delete" characters. I created some test files to demonstrate the difference: $ grep -r gap. How do I grep a exact string from multiple files at the same time WebExample 2: Apply grep & grepl with Multiple Patterns We can also use grep and grepl to. The cat -v command "displays nonprinting characters as visible characters." Or find /u/user/.History/ -type f -exec grep gap + | cat -v My recommendation would be to filter the output so that it expands the non-printable portions into printable characters so that you can see the underlying text. I believe your grep -r "gap" /u/user/.History/ command was actually finding the right files and displaying the matching lines it's just that those lines also have non-printable portions that are obscuring the text when the line is written to your terminal. ![]()
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