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SORT.MAN
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1988-03-28
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SORT ST-UNIX User's Manual SORT
COMMAND
sort - sort files.
FORMAT
sort [ -mubdfinrt_✓x ] [ +_✓p_✓o_✓s_✓1 [ -_✓p_✓o_✓s_✓2 ] ] ... [ -o name ] [
DESCRIPTION
_✓S_✓o_✓r_✓t sorts lines of all the named files (default standard
input), together and writes the result on the standard out-
put. The name `-' may be used to specify the standard
input.
By default sorting is for the entire line and is in ascend-
ing byte order. The ordering is affected by the following
options, one or more of which may appear.
b Ignore leading blanks (spaces and tabs) in field com-
parisons.
d `Dictionary' order: only letters, digits and blanks are
significant in comparisons.
f Fold upper case letters onto lower case.
i Ignore characters outside the ASCII range 32-127 in
nonnumeric comparisons.
n An initial numeric string, consisting of optional
blanks, optional minus sign, and zero or more digits
with optional decimal point, is sorted by arithmetic
value. Option n implies option b.
r Reverse the sense of comparisons.
t_✓x `Tab character' separating fields is _✓x.
The notation +_✓p_✓o_✓s_✓1 -_✓p_✓o_✓s_✓2 restricts a sort key to a field
beginning at _✓p_✓o_✓s_✓1 and ending just before _✓p_✓o_✓s_✓2. _✓P_✓o_✓s_✓1 and
_✓p_✓o_✓s_✓2 each have the form _✓m._✓n, optionally followed by one or
more of the flags bdfinr, where _✓m tells a number of fields
to skip from the beginning of the line and _✓n tells a number
of characters to skip further. A missing ._✓n means .0; a
missing -_✓p_✓o_✓s_✓2 means the end of the line. Under the -t_✓x
option, fields are strings separated by _✓x; otherwise fields
are nonempty nonblank strings separated by blanks.
These option arguments are also understood:
c Check that the input file is sorted according to the
ordering rules; give no output unless the file is out
of sort.
Printed 28/March/1988 30 March 1987 1
SORT ST-UNIX User's Manual SORT
m Merge only, the input files are already sorted.
o The next argument is the name of an output file to use
instead of the standard output. This file may be the
same as one of the inputs.
u Suppress all but one in each set of equal lines.
Printed 28/March/1988 30 March 1987 2