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Full Discussion: Merging lines
Top Forums Shell Programming and Scripting Merging lines Post 302490627 by MDM on Tuesday 25th of January 2011 10:25:13 AM
Old 01-25-2011
Merging lines

Hi folks.

Could somebody help me write a script or command that will look through a file and for every line that doesn't contain a certain value, merge it with the one above?

For example, the file contains:
SCOTLAND|123|ABC|yes
SCOTLAND|456|DEF|yes
SCOTLAND|78
9|GHI|yes
SCOTLAND|101|JKL|yes
SCOTLA
ND|112|M
NO|yes
SCOTLAND|131|PQR|yes
SCOTLAND|415|STU|yes
SCOTLAND|161|VWX|yes

I need to have all the lines merged so each line starts with SCOTLAND:

SCOTLAND|123|ABC|yes
SCOTLAND|456|DEF|yes
SCOTLAND|789|GHI|yes
SCOTLAND|101|JKL|yes
SCOTLAND|112|MNO|yes
SCOTLAND|131|PQR|yes
SCOTLAND|415|STU|yes
SCOTLAND|161|VWX|yes

Is this possible?

The file I receive has ^M at the end of each records 'yes' value, but for some reason the lines are splitting up - could this be 'line feeds'?
 

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LETTERIZE(1)							    Miscellanea 						      LETTERIZE(1)

NAME
letterize_ - phone-number to letter-mnemonic generator SYNOPSIS
letterize nnnnnnn DESCRIPTION
This program tries to help you find a letter mnemonic matching a given phone number. It emits to standard output each possible pronounceable mnemonic, one per line, using the American standard mapping of dial letters to numbers (2 goes to ABC, 3 to DEF, 4 to GHI, 5 to JKL, 6 to MNO, 7 to PRS, 8 to TUV, 9 to XYZ). The program uses a table of pronounceable letter-triples derived from a dictionary scan. Each potential mnemonic must be such that all of its letter-triples are in the table to be emitted. About 30% of possible triples are considered pronounceable. A typical 7-digit phone number has 19,683 possible mnemonics, but this test usually cuts the list down to a few hundred or so, a reasonable number to eyeball-check. For some numbers, the list will, sadly, be empty. It's best to leave out punctuation such as dashes and parens. BUGS
The filtering method doesn't know what plausible medial triples are not reasonable at the beginnings and ends of words. I'm not sure what table position 0 (which is what 0 and 1 are mapped to) means. If you figure it out, you tell me. I really should have generated my own table, but that would have been more work than this seemed worth -- if your number contains either, you probably need to generate your mnemonic in disjoint pieces around the digits anyway. AUTHOR
Eric S. Raymond esr@snark.thyrsus.com. It's based on a table of plausible letter-triples that had no name attached to it. Surf to http://www.catb.org/~esr/ for updates and related resources. letterize 05/30/2012 LETTERIZE(1)
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