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Full Discussion: Join two files with matching columns
Top Forums Shell Programming and Scripting Join two files with matching columns Post 302825655 by Scrutinizer on Tuesday 25th of June 2013 12:20:09 AM
Old 06-25-2013
Quote:
Originally Posted by unkleruckus
Yes I did. I am read through several threads and am currently trying this:

Code:
join -t\, file1 file2

which works, but it only prints out 5 lines for some reason, even though the first column for each file is identical.
The join command would work too, but it requires that the lines in the inout files are in sorted order..


Quote:
Originally Posted by unkleruckus
That is very helpful, thank you!

Can you help me understand what is being matched up with that line of code, though? For example if I wanted file2 to be matched with column 2 instead, but only print column 1 to the output, what would I have to change around?

thanks!!
Then you could try something like this:
Code:
awk 'NR==FNR{A[$2]; next} $2 in A{print $1}' file1 file2

If that does not work, you would need to provide a better data sample..
Last edited by Scrutinizer; 06-25-2013 at 01:27 AM..
 

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LEARN ABOUT MOJAVE

tk_nameofjoinstyle

Tk_GetJoinStyle(3)					       Tk Library Procedures						Tk_GetJoinStyle(3)

__________________________________________________________________________________________________________________________________________________

NAME

       Tk_GetJoinStyle, Tk_NameOfJoinStyle - translate between strings and join styles

SYNOPSIS

       #include <tk.h>

       int
       Tk_GetJoinStyle(interp, string, joinPtr)

       const char *
       Tk_NameOfJoinStyle(join)

ARGUMENTS

       Tcl_Interp *interp (in)		 Interpreter to use for error reporting.

       const char *string (in)		 String containing name of join style: one of "bevel", "miter", or "round".

       int *joinPtr (out)		 Pointer to location in which to store X join style corresponding to string.

       int join (in)			 Join style: one of JoinBevel, JoinMiter, JoinRound.
_________________________________________________________________

DESCRIPTION

       Tk_GetJoinStyle places in *joinPtr the X join style corresponding to string, which will be one of JoinBevel, JoinMiter, or JoinRound.  Join
       styles are typically used in X graphics contexts to indicate how adjacent line segments should be joined together.  See the X documentation
       for information on what each style implies.

       Under  normal circumstances the return value is TCL_OK and interp is unused.  If string does not contain a valid join style or an abbrevia-
       tion of one of these names, then an error message is stored in interp->result, TCL_ERROR is returned, and *joinPtr is unmodified.

       Tk_NameOfJoinStyle is the logical inverse of Tk_GetJoinStyle.  Given a join style such  as  JoinBevel  it  returns  a  statically-allocated
       string corresponding to join.  If join is not a legal join style, then "unknown join style" is returned.

KEYWORDS

       bevel, join style, miter, round

Tk																Tk_GetJoinStyle(3)
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