Grep output with multiple Colors?

by

You can cascade greps with different colors by specifying –color=always and using the regular expression ‘foo|$’ to pass all lines.

For example:

tail -f myfwlog | GREP_COLOR='01;36' egrep --color=always 'ssh|$' | GREP_COLOR='01;31' egrep -i --color=always 'drop|deny|$'

If you want the entire line to be highlighted, update your regular expression accordingly:

.... GREP_COLOR='01;31' egrep -i --color=always '^.*drop.*$|^.*deny.*$|$'

More Related Contents:

  1. How can I manipulate text in bash? [closed]
  2. How to merge every two lines into one from the command line?
  3. How to delete rows from a csv file based on a list values from another file?
  4. How to grep for case insensitive string in a file?
  5. Convert 11/2/1998 to 110298 [duplicate]
  6. Some troubles with using sed and awk [closed]
  7. How can I do a recursive find/replace of a string with awk or sed?
  8. Bash tool to get nth line from a file
  9. Extraction of data from a simple XML file
  10. Remove first N lines of a file in place in unix command line
  11. How to add to the end of lines containing a pattern with sed or awk?
  12. Colorized grep — viewing the entire file with highlighted matches
  13. Check if all of multiple strings or regexes exist in a file
  14. How to remove double-quotes in jq output for parsing json files in bash?
  15. How to find/replace and increment a matched number with sed/awk?
  16. find difference between two text files with one item per line [duplicate]
  17. Using grep to search for hex strings in a file
  18. How to append a string at end of a specific line in a file in bash [duplicate]
  19. How to strip out all of the links of an HTML file in Bash or grep or batch and store them in a text file
  20. using bash (sed/awk) to extract rows AND columns in CSV files?
  21. How to pass a variable containing slashes to sed
  22. Fast way of finding lines in one file that are not in another?
  23. awk in bash with ls and variable
  24. Delete all lines beginning with a # from a file
  25. Specify other flags in awk script header
  26. Error with sed unterminated s command in bash
  27. Convert line endings [duplicate]
  28. Can I use sed to manipulate a variable in bash?
  29. How to get the PID of a process in a pipeline
  30. How can I format the output of a bash command in neat columns

Leave a Comment