Cat a file with grep, showing current "cat" line

Question

I search through a HUGE file with cat and grep. I need to know on which line is cat all the time.

If i want to search ball:

cat file.txt | grep ball

FILE:

football
tennis
hockey
basketball
...

WHAT I NEED:

1. row - football [1/1000]
2. row - [2/1000]
2. row - [3/1000]
3. row - basketball [4/1000]

Would getting the line number (and not the total lines in the file) in front of each line be enough for you? — ojs
– ojs, Commented Nov 11, 2017 at 21:31
Of course it would be enough. Total lines i do with "wc -l file" — XYZT
– XYZT, Commented Nov 11, 2017 at 21:48
This is not exactly what i want. I want to see all the time the number of line where awk or cat is. Like printing percentage example: print("{}% Complete".format(percent), end="\r"). That current line of awk or cat will be printed on same line, updating every "tick". — XYZT
– XYZT, Commented Nov 11, 2017 at 22:08

RomanPerekhrest · Accepted Answer · 2017-11-11 22:20:59Z

1

Complete awk + wc approach:

Sample file.txt:

football
tennis
hockey
basketball
boxing

awk -v t=$(wc -l file.txt | cut -d' ' -f1) '{ printf "%s[%d/%d]\n",(/ball/? $0" ":""),NR,t }' file.txt

The output:

football [1/4]
[2/4]
[3/4]
basketball [4/4]
[5/5]

answered Nov 11, 2017 at 22:20

RomanPerekhrest

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ojs · Accepted Answer · 2017-11-11 21:51:02Z

1

Doing grep -n ball file.txt will output

1:football
4:basketball

answered Nov 11, 2017 at 21:51

ojs

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2 Answers 2