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Using sed to change file into an awk script


 
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# 1  
Old 08-18-2019
Using sed to change file into an awk script

Hi I want to use sed to change a text files input into an awk script.
For example if the input says " chord -- english " I want to change this using sed 's/pattern 1 /pattern 2 /'g filename but I don't understand how to use part of the pattern 1 to input that into pattern 2 . Like after using sed chord-- english should look like this awk '/pattern 1/ {awk function}' filename.

Any help will be appreciated.

Last edited by jim mcnamara; 08-18-2019 at 11:53 AM..
# 2  
Old 08-18-2019
Not sure I understand the request. You have a text file processed by awk and want it preprocessed by sed? Why don't you do all of it in awk itself?
# 3  
Old 08-18-2019
Do you need distinct awk functions for every line of text or just a few functions? Sample input, output would help a lot.

Edit: I don't understand the request either....
This User Gave Thanks to jim mcnamara For This Post:
# 4  
Old 08-18-2019
Actually, my main issue is that I want to use part of the pattern 1 in pattern 2 in sed. Like so


-sagot this should change to /sagot$/{count++}
-sagot- this should change to /sagot/{count++}
sagot- should change to /^sagot/{count++}

so basically I need to change according to the position of '-' and use the word in pattern 1 without hard coding it treating as if it is a variable because I have to run this on a big file and cannot write all the combinations.
# 5  
Old 08-18-2019
That's what "back references" (man regex / man sed) are for. But I think your "ansatz" is flawed - you could use the "pattern1" in awk only with tricks.
Paint the whole picture, include sample input and output data, and you might receive proposals to solve the whole picture.
# 6  
Old 08-18-2019
I have to use sed to transform every line into an awk code

Last edited by enforcer; 08-20-2019 at 01:10 AM..
# 7  
Old 08-18-2019
Hmm. Assuming the file looks like your example -
FWIW you can do this many ways, you may be over thinking your task.
Example:

Code:
greek=$(grep -c "[Gg]reek$" infile)
latin=$(grep -c "[Ll]atin$" infile)
echo "greek= $greek   latin= $latin"

This provides the same information your awk preprocessing generates, with no intermediate files. And ignores upper/lowercase issues.

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