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UNIX for Dummies Questions & Answers
converting unique identifiers in a column using conversion file
Post 302489782 by peanuts48 on Friday 21st of January 2011 03:38:29 PM
01-21-2011
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Hi,
Request To guide me in writing a shell program for the following requirement:
Example:if the Input File contains the follwing data
Input File Data:
80723240029,12,323,443,88,98,7,98,67,87
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cat sample.csv
ID,Name,no
1,AAA,1
2,BBB,1
3,AAA,1
4,BBB,1
cut -d',' -f2 sample.csv | sort | uniq
this gives only the 2nd column values
Name
AAA
BBB
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3330690|373846|108471
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LEARN ABOUT OSX
colrm
COLRM(1) BSD General Commands Manual COLRM(1) NAME
colrm -- remove columns from a file SYNOPSIS
colrm [start [stop]] DESCRIPTION
The colrm utility removes selected columns from the lines of a file. A column is defined as a single character in a line. Input is read from the standard input. Output is written to the standard output. If only the start column is specified, columns numbered less than the start column will be written. If both start and stop columns are spec- ified, columns numbered less than the start column or greater than the stop column will be written. Column numbering starts with one, not zero. Tab characters increment the column count to the next multiple of eight. Backspace characters decrement the column count by one. ENVIRONMENT
The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of colrm as described in environ(7). EXIT STATUS
The colrm utility exits 0 on success, and >0 if an error occurs. SEE ALSO
awk(1), column(1), cut(1), paste(1) HISTORY
The colrm command appeared in 3.0BSD. BSD
August 4, 2004 BSD