convoluted code Post: 302666535

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The Lounge War Stories convoluted code Post 302666535 by jgt on Wednesday 4th of July 2012 04:13:33 PM

07-04-2012

Registered User

convoluted code

Hi,
I have been thinking of how to script this but i have no clue at all..
Could someone please help me out or give me some idea on this?
I would like to group those lines with the same first variable in each line, joining the 2nd variables with commas.
Let's say i have the following input.

Code:

aa c1
aa c2
aa c3
cc d1
dd e1
dd e2
ee f1

I would like the output to be like this.

Code:

aa c1,c2,c3
cc d1
dd e1,e2
ee f1

Could this be easily done with bash script?
Or should i try perl script then?
I'm a beginner in bash script and perl.
Thank you.

***************************
Try this

Code:

first="Y"                
while read a b           
do                       
if [ "$first"  =  "Y"  ] 
then                     
   first="N"             
   prev=$a               
   echo "$a $b\c"        
else                     
if [ "$a" != "$prev" ]   
then                     
   echo "\n$a $b\c"      
   prev=$a               
else                     
   echo ",$b\c"          
fi                       
fi                       
done

This assumes that the input file is sorted.

********************************************************
Sorry.. don't understand..
what is a, b , F ..?
Anyway i found a short solution.
${input} is the filename for the input file.

Code:

for m in `cat ${input} | awk '{print $1}' | sort | uniq `
do
        var=`grep "^${m} " ${output} | awk '{print $2}' | tr '\n' ',' | sed '$s/,$//'`
        echo "${m} ${var}"
done

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LEARN ABOUT SUNOS

euctoibmj

euctoibmj(1)							   User Commands						      euctoibmj(1)

NAME

       euctoibmj, ibmjtoeuc - Code conversion between Japanese EUC and IBM-Japanese

SYNOPSIS

       euctoibmj [-t] [-u code] [-U] [filename...]

       ibmjtoeuc [-u code] [-U] [filename...]

AVAILABILITY

       SUNWjfpu

DESCRIPTION

       euctoibmj  converts  the contents of the specified filenames from  ASCII/ Japanese EUC to  EBCDIC/IBM-Japanese. ibmjtoeuc converts the con-
       tents of the specified filenames from  EBCDIC/IBM-Japanese to  ASCII/ Japanese EUC. The both commands write the resultant code  to  stdout.
       If filename is not given, input characters are read from the standard input.

       For Japanese language handling, the euctoibmj/ibmjtoeucj pair of commands provide conversion only between the two code standards. Code con-
       version among Japanese EUC, JIS, and PC kanji are supported by another set of commands, jistoeuc(1) family or iconv(1).

OPTIONS

       -u code	With this option specified, characters in one code set that do not have corresponding characters in the other are  mapped  to  the
		code  given  in four-digit hexadecimal HOST CODE of IBM Japanese (for euctoibmj) or in four-digit JIS Ku-Ten code (for ibmjtoeuc).
		Without this option, such characters are mapped to HOST CODE 4040 (for euctoibmj) or JIS Ku-Ten code 0101 (for ibmjtoeuc).

       -U	The output is not buffered (The default is buffered output).

       -t	With this option specified, euctoibmj translates Half-Size Katakana (Code Set 2) in Japanese EUC to the  corresponding	characters
		in Code Set 1 prior to conversion. Without this option, Code Set 2 characters in Japanese EUC are processed to the illegal charac-
		ter.

ENVIRONMENT VARIABLES

       The environment variables LC_CTYPE and LANG control the character classification throughout these commands. For euctoibmj and ibmjtoeuc	to
       work correctly, one or both of the environment variables must be set to ja or an equivalent locale. On entry to these commands, these envi-
       ronment variables are checked in the following order: LC_CTYPE and LANG. When a valid value is found, remaining environment  variables  for
       character classification are ignored.

FILES

       /usr/lib/jcodetables/ibmj-euc

	   Code conversion table for IBM Japanese.

SEE ALSO

       iconv(1), jistoeuc(1), iconv_ja(5)

DIAGNOSTICS

       unexpected data encountered in input.

	   Illegal character code is found in input file.

BUGS

       The   ASCII/EBCDIC conversion table are taken from the 256 character standard in the  CACM Nov, 1968. The conversion, while less blessed as
       a standard, corresponds better to certain  IBM print train convertions. There is no universal solution.

       The Japanese EUC/IBM Japanese conversion table is based on the  IBM Kanji codebook (4th edition - September 1987),  JIS X 0201, and  JIS  X
       0208-1983.

       If  JIS X 0212 caracter set is specified as input, euctoibmj can not support the conversion correctly.

SunOS 5.10							    10 Jan 2003 						      euctoibmj(1)

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euctoibmj