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Top Forums Shell Programming and Scripting using field 2 in file2 to complete field 3 in file1 Post 302569924 by smarones on Wednesday 2nd of November 2011 04:25:48 AM
Old 11-02-2011
using field 2 in file2 to complete field 3 in file1

Hello,

I was hoping someone could help me with this work related problem...

basically what I want to do is the following:

file2:
Code:
1 o
2 t
4 f
5 v
7 n
8 e
10 a

file1:
Code:
1 :
2 :
3 :
4 :
5 :
6 :
7 :
8 :
9 :
10 :

Output:
Code:
1 : o
2 : t
3 :
4 : f
5 : v
6 :
7 : n
8 : e
9 :
10 : a

I am using "foreach" to implement this and it works fine when the number of lines is low, but when I hit numbers in the thousands the script becomes really slow.
I am sure there is a faster way of doing this using awk or sed but just dont know the command.
if you could also provide an explanation of the command that implements this I would appreciate it.


Thanks,

Moderator's Comments:
Mod Comment Please use code tags <- click the link!

Last edited by zaxxon; 11-02-2011 at 05:40 AM.. Reason: code tags, see PM
 

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CBCODEC(1)						      Quick Database Manager							CBCODEC(1)

NAME
cbcodec - popular encoders and decoders SYNOPSIS
cbcodec url [-d] [-br] [-rs base target] [-l] [-e expr] [file] cbcodec base [-d] [-l] [-c num] [-e expr] [file] cbcodec quote [-d] [-l] [-c num] [-e expr] [file] cbcodec mime [-d] [-hd] [-bd] [-part num] [-l] [-ec code] [-qp] [-dc] [-e expr] [file] cbcodec csv [-d] [-t] [-l] [-e expr] [-html] [file] cbcodec xml [-d] [-p] [-l] [-e expr] [-tsv] [file] cbcodec zlib [-d] [-gz] [-crc] [file] cbcodec lzo [-d] [file] cbcodec bzip [-d] [file] cbcodec iconv [-ic code] [-oc code] [-ol ltype] [-cn] [-wc] [-um] [file] cbcodec date [-wf] [-rf] [-utc] [str] DESCRIPTION
This manual page documents briefly the cbcodec commands. cbcodec is a tool to use encoding and decoding features provided by Cabin. This command is used in the above format. file specifies a input file. If it is omitted, the standard input is read. OPTIONS
A summary of options is included below. For a complete description, see the file:///usr/share/doc/qdbm-doc/spex.html#cabincli. -d perform decoding (unescaping), not encoding (escaping). -br break up URL into elements. -rs resolve relative URL. -l output the tailing newline. -e expr specify input data directly. -c num limit the number of columns of the encoded data. -hd parse MIME and extract headers in TSV format. -bd parse MIME and extract the body. -part num parse MIME and extract a part. -ec code specify the input encoding, which is UTF-8 by default. -qp use quoted-printable encoding, which is Base64 by default. -dc output the encoding name instead of the result string when decoding. -t parse CSV. Convert the data into TSV. Tab and new-line in a cell are deleted. -html parse CSV. Convert the data into HTML. -p parse XML. Show tags and text sections with dividing headers. -tsv parse XML. Show the result in TSV format. Characters of tabs and new-lines are URL-encoded. -gz use GZIP format. -crc output the CRC32 checksum as hexadecimal and big endian. -ic code specify the input encoding, which is detected automatically by default. -oc code specify the output encoding, which is UTF-8 by default. -ol ltype convert line feed characters, with `unix'(LF), `dos'(CRLF), and `mac'(CR). -cn detect the input encoding and show its name. -wc count the number of characters of the input string of UTF-8. -um output mappings of UCS-2 characters and C strings of UTF-16BE and UTF-8. -wf output in W3CDTF format. -rf output in RFC 1123 format. -utc output the coordinate universal time. SEE ALSO
qdbm(3), cabin(3). AUTHOR
QDBM was written by Mikio Hirabayashi <mikio@fallabs.com>. This manual page was written by Fumitoshi UKAI <ukai@debian.or.jp>, for the Debian project (but may be used by others). Man Page 2005-05-23 CBCODEC(1)
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