CODEWITHSUNDEEP
linuxcommand-linesed
Manus
Manus

Reputation: 879

Copying certain words from one file to another using command line

I have a text file which is of the following format:

{
Name: Me
Age:17
Qualification : Doctor
}
{
 Name: You
 Age:21
 Qualification : Another Doctor
}

I need to copy the number in the Age lines, '17' and '21' in this case, to another file in this format:

17,21.

As you can see i am trying to create a File 2 CSV of the numbers in a certain field in File 1. I need to automate this using shell script. Kindly suggest a solution to this.

When I searched on Google, the 'sed' option turned up but I could not figure out a compact solution for this problem.

Thanks in advance for your time and contributions.

Upvotes: 1

Views: 796

Answers (4)

potong
potong

Reputation: 58578

This might work for you (GNU sed):

sed '/\s*Age:\s*/H;$!d;x;s///;s//,/g' file

This appends the lines with Age: to the hold space (HS) and deletes everything else. On end-of-file it swaps to the HS and removes the unwanted text replacing it with ,'s.

Upvotes: 2

Mark Setchell
Mark Setchell

Reputation: 208107

Here is a variation on Jotne's response with tidied up trailing comma:

awk -F: '/Age:/{r=r $2 ","}END{sub(/,$/,"",r);print r}' a
17,21

Basically, it builds up a result string in the variable "r" by looking for lines containing "Age" and then appending the second field on that line and adding a comma afterwards. At the end, it replaces a trailing comma (at the end of the line) with nothing, and then prints the result string "r".

Upvotes: 2

Magoo
Magoo

Reputation: 80211

@ECHO OFF
SETLOCAL
SET "number1="
(
 FOR /f "tokens=1,2delims=: " %%a IN (q20072209.txt) DO IF "%%a"=="Age" (
  IF DEFINED number1 (
   CALL ECHO %%number1%%,%%b.
   SET "number1="
   ) ELSE SET number1=%%b
 )
)>newfile.txt
TYPE newfile.txt
GOTO :EOF

Not at all sure what is supposed to happen if there's more than 1 pair of data elements. q20072209.txt is the name of your input textfile and newfile.txt will be produced.

Upvotes: 1

Jotne
Jotne

Reputation: 41460

Some like this?

awk -F: '/Age/ {printf "%s,",$2} END {print ""}' file1 >agefile
cat agefile
17,21,

Upvotes: 2

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