/usr/bin/mmval is in stda 1.3.1-2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 | #!/bin/sh
VERSION=1.3.1
PROGNAME=`basename $0`
DESC="$PROGNAME $VERSION: find minimum and maximum value in a data set"
LICENSE="Copyright (C) 2009, 2012-2013 Dimitar Ivanov
License: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law."
################################################################################
show_usage()
{
cat << EOU
Usage: $PROGNAME [OPTION]... [FILE]
Options:
-m - find the maximum value
-M - find the minimum value
-n - prefix the output with the line number within its input
-c <int> - consider the data in the specified column of the input
-v - print program version and copyright message, then exit
-h - display this help and exit
EOU
}
show_version()
{
cat << !ver
$PROGNAME $VERSION
$LICENSE
!ver
}
[ x$1 = x--help ] \
&& set -- '-h' \
&& DESC="$PROGNAME determines minimum and maximum values of data"
[ x$1 = x--version ] && set -- '-v'
opts="mMnc:vh"
opts=`getopt $opts $*` && RC=0 || { opts="-h"; RC=1; }
set -- $opts
while [ 1 ]
do
case $1 in
-v) show_version; exit
;;
-n) line_numbers=yes
;;
-m) mode=${mode}min
;;
-M) mode=${mode}max
;;
-c) col=$2
shift
;;
-[a-zA-Z0-9])
echo $DESC
show_usage
exit $RC
;;
*) file=$2
[ -z "$file" ] && file=-
break
;;
esac
shift
done
# File sanity check
if [ "$file" != "-" ]; then
[ -f "$file" ] || \
{ echo "Error: no such file '$file'"; exit 1; }
[ -r "$file" ] || \
{ echo "Error: no read permission for '$file'"; exit 2; }
fi
[ x$col = x ] && col=1
case $mode in
min) comp='<'
;;
max) comp='>'
;;
maxmin|minmax)
;;
*) mode=minmax # If no mode chosen, then minimum + maximum is default
;;
esac
# Code for finding out minum or maximum values only
awk_script_min="
{
v_i=\$$col
if( ! i ) v_m = v_i;
if( v_i $comp v_m ) { v_m = v_i; lines = \"\"; }
i++
if( \"$line_numbers\" && v_i == v_m ) {
if( lines )
lines = sprintf( \"%s\\n%d:%s\", lines, i, \$0 );
else
lines = sprintf( \"%d:%s\", i, \$0 )
}
}
END \
{
if( \"$line_numbers\" == \"yes\" ) print lines;
else print v_m;
}
"
# The same like the minimum script
awk_script_max="$awk_script_min"
# Code for finding out concurrently minum and maximum values
awk_script_minmax="
{
v_i=\$$col
if( ! i ) { v_max = v_min = v_i; }
if( v_i < v_min ) { v_min = v_i; lines_min = \"\"; }
if( v_i > v_max ) { v_max = v_i; lines_max = \"\"; }
i++
if( \"$line_numbers\" && v_i == v_max ) {
if( lines_max )
lines_max = sprintf( \"%s\\n%d:%s\", lines_max, i, \$0 );
else
lines_max = sprintf( \"%d:%s\", i, \$0 );
}
if( \"$line_numbers\" && v_i == v_min ) {
if( lines_min )
lines_min = sprintf( \"%s\\n%d:%s\", lines_min, i, \$0 );
else
lines_min = sprintf( \"%d:%s\", i, \$0 );
}
}
END \
{
if( \"$line_numbers\" == \"yes\" ) {
if( \"$mode\" == \"maxmin\" ) { print lines_max; print lines_min; }
else { print lines_min; print lines_max; }
} else {
if( \"$mode\" == \"maxmin\" ) printf( \"%s\n%s\n\", v_max, v_min );
else printf( \"%s\n%s\n\", v_min, v_max );
}
}
"
# The same like the minmax script
awk_script_maxmin="$awk_script_minmax"
# Evaluate the variable to get the actual script name
eval awk_script="\${awk_script_$mode}"
cat $file |awk "$awk_script"
|