INTELLIGENT WORK FORUMS
FOR COMPUTER PROFESSIONALS

Log In

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Jobs

Join Files without separator

Join Files without separator

(OP)
Hi, I'm trying a join of two files but, the format is special. For example:

file1:

11223344
12234455
22454488
55448877

file2:

11882244
13445588
55446677

Output:
11223344
55446677

The key are the positions (1,2,7,8) (numbers of columns) and these records are contains in the file1.

Thanks and sorry for my English.

RE: Join Files without separator



Try this:

CODE

awk '{k=substr($1,1,2)substr($1,7,2);o[k]=o[k]" "$1;}END{for(k in o){n=split(o[k],e);if(n>1)print e[1];}}' file1 file2 
3eyes

----------------------------------------------------------------------------
The person who says it can't be done should not interrupt the person doing it. -- Chinese proverb

RE: Join Files without separator

(OP)
Thanks for your help, LKBrwnDBA.
Can you explain me the code, please.

RE: Join Files without separator


CODE

k=substr($1,1,2)substr($1,7,2)		- Extract "key": first and last two characters
o[k]=o[k]" "$1				- Collect each corresponding element in an array
END{for(k in o){			- At the end, loop through the array
n=split(o[k],e);if(n>1)print e[1];}	- .. print only those elements for array which has more than 1
}' file1 file2 				- source both files. 
noevil

----------------------------------------------------------------------------
The person who says it can't be done should not interrupt the person doing it. -- Chinese proverb

RE: Join Files without separator

(OP)
Thanks, LKBrwnDBA for your help!;)

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Tek-Tips Forums free from inappropriate posts.
The Tek-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Click Here to join Tek-Tips and talk with other members!

Resources

Close Box

Join Tek-Tips® Today!

Join your peers on the Internet's largest technical computer professional community.
It's easy to join and it's free.

Here's Why Members Love Tek-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close