10-23-2014
Is this a homework assignment?
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i have a file in unix in which the records are like this
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i get text files with
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Hi All,
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Hi I have a difficulty in writing shell script for performing the tasks.
A B C D
12 230 16 259
18 260 23 283
21 291 36 298
41 309 49 420
52 425 57 450
61 456 70 473
72 475 79 486
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Hi All,
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Col1 Col2 Col3 Col4
A 1 0 5
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C 3 0 7
D 4 0 9
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Can anyone please assist?
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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