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Link: http://www.nosoftwarepatents.com/
One Day One GNU/Linux Command
=============================
fold -- Wrap each input line to fit in specified width.
Summary :
`fold' wrap input lines in each input file and writes the output to
standard output. `fold' counts screen columns by default.
Examples :
$ fold myfile -- Fold each input line at column 80 and print in the
screen/stdout.
$ fold -w 40 myfile > myfile1 -- Fold each input line at column 40 and
the output is redirected to myfile1.
$ fold -s -w40 f1 f2 -- Fold each input line of f1 and f2 at column 40
and folding will happen at space only.
$ fold -b 40 myfile -- Folds at 40th byte place.
$ fold -c 40 myfile -- Folds at 40th character position.
Note:
1) Normally all the above options will give same output. Difference
can be felt only with multi-byte encodings, like UTF-8...
2) A tab may count more than one column, backspace decreases the
column count, and carriage return sets the column to zero.
Read : man fold
HTH :)
--
Bharathi S
