05-15-2014
Please find below the answers
Is your program supposed to read a list of Col=start,stop values from a file, or are these fixed values?
Ans : The col=start, stop values are fixed as mentioned.
Is there supposed to be a comma added before column 4 (or before the 1st identified field)?
Ans: No, the first identified field will start from character 4 of the the given sample line.
Is there supposed to be a comma added after column 81 (or after the last identified field)?
Ans : No, there shouldn't be any comma after the last identified field.
If the Col=values entries are supposed to be read from a file:
are they always in increasing order?
do they always specify adjacent fields?
Ans : The values are always fixed as mentioned.
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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