How can I format my grep output to show line numbers at the end of the line and also the hit count

Question

I m using grep to match string in a file  Here is an example file   example one  example two null  example three  example four null    grep -i null myfile txt returns   example two null  example four null    How can I return matched lines together with their line numbers like this     example two null  - Line number   2   example four null  - Line number   4   Total null count   2   I know -c returns total matched lines  but I don t how to format it properly to add total null count in front  and I don t know how to add the line numbers   What can I do

User · Accepted Answer

-n returns line number   -i is for ignore-case  Only to be used if case matching is not necessary    grep -in null myfile txt  2 example two null  4 example four null    Combine with awk to print out the line number after the match     grep -in null myfile txt   awk -F    print  2  - Line number     1    example two null  - Line number   2 example four null  - Line number   4   Use command substitution to print out the total null count     echo  Total null count      grep -ic null myfile txt   Total null count   2

User · Answer

Refer this link for linux command linux http   linuxcommand org man pages grep1 html  for displaying line no  line of code and file use this command in your terminal or cmd  GitBash Powered by terminal   grep -irn  YourStringToBeSearch

User · Answer

Use -n or --line-number   Check out man grep for lots more options

User · Answer

use grep -n -i null myfile txt to output the line number in front of each match   I dont think grep has a switch to print the count of total lines matched  but you can just pipe grep s output into wc to accomplish that   grep -n -i null myfile txt   wc -l

User · Answer

Just thought I d something that might help you in the future  To search multiple string and output line numbers and browse thru the output  type   egrep -ne  null three   will show      2 example two null    3 example three    4 example four null       egrep -ne  null three    less  will display output in a less session  HTH Jun

User · Answer

Or use awk instead   awk   null    counter    printf   s s i n   0    - Line number     NR   END  print  Total null count    counter   file

User · Answer

or in perl  for completeness       perl -npe  chomp   null  and print     - Line number      n  and  i         END print  Total null count    i n

User · Answer

grep find the lines and output the line numbers  but does not let you  program  other things  If you want to include arbitrary text and do other  programming   you can use awk     awk   null  c   print  0   - Line number   NR END print  Total null count   c   file example two null   - Line number  2 example four null   - Line number  4 Total null count  2   Or only using the shell bash ksh   c 0 while read -r line do   case   line  in     null             c         echo   line - Line number  c           esac done  lt   file  echo  total count   c

[linux] How can I format my grep output to show line numbers at the end of the line, and also the hit count?

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