5 use List::Util qw( min max sum );
6 use open qw( :std :utf8 );
14 Getopt::Long->import('2.33', qw( :config gnu_getopt ));
18 'M' => sub { $opt{color} = 0 },
22 s/\A[0-9]+\z/(?:\\S*\\h+){$_}\\K/;
24 (!!$1 && '(?:\d+\D+\b){'.$1.'}\K') . '\s* (?=\d)'
26 $opt{anchor} = qr/$_/;
27 } or die $@ =~ s/(?:\ at\ \N+)?\Z/ for option $_[0]/r;
34 'trim|length|l=s' => sub {
35 my ($optname, $optval) = @_;
36 $optval =~ s/%$// and $opt{trimpct}++;
37 $optval =~ m/\A-?[0-9]+\z/ or die(
38 "Value \"$optval\" invalid for option $optname",
39 " (number or percentage expected)\n"
47 my ($optname, $optval) = @_;
49 $optval =~ /\A-[0-9]+\z/ and $optval .= '-'; # tail shorthand
52 $optval =~ m/\A (?: (-? [0-9]+)? - )? (-? [0-9]+)? \z/ or die(
53 "Value \"$optval\" invalid for option limit",
58 s/\A-0*\z// and $_ ||= undef for $end // ();
63 return max(0, $lines + $start + 2);
68 my ($limit, $offset) = @_;
70 return $offset - $end - 1; # count
73 return $limit - $end + 1; # bottom
75 elsif ($end <= $limit) {
76 return $end - 1; # less
84 'graph-format=s' => sub {
85 $opt{'graph-format'} = substr $_[1], 0, 1;
92 fire => [qw( 90 31 91 33 93 97 96 )],
93 fire256=> [map {"38;5;$_"} qw(
95 202 208 214 220 226 227 228 229 230 231 159
97 whites => [qw( 1;30 0;37 1;37 )],
98 grays => [map {"38;5;$_"} 0, 232..255, 15],
99 random => [map {"38;5;$_"} List::Util::shuffle(17..231)],
100 rainbow=> [map {"38;5;$_"}
102 (map { 196 + $_*6 } 0..4), # +g
103 (map { 226 - $_*6*6 } 0..4), # -r
104 (map { 46 + $_ } 0..4), # +b
105 (map { 51 - $_*6 } 0..4), # -g
106 (map { 21 + $_*6*6 } 0..4), # +r
107 (map { 201 - $_ } 0..4), # -b
111 my @vals = split /[^0-9;]/, $_[1]
112 or die "Empty palette resulting from \"$_[1]\"\n";
122 my $mascot = $opt{ascii} ? '=^,^=' : 'ฅ^•ﻌ•^ฅ';
123 say "barcat $mascot version $VERSION";
127 /^=/ ? last : print for readline *DATA; # text between __END__ and pod
132 Pod::Usage::pod2usage(
133 -exitval => 0, -perldocopt => '-oman', -verbose => 2,
136 ) or exit 64; # EX_USAGE
139 $opt{width} ||= $ENV{COLUMNS} || qx(tput cols) || 80 unless $opt{spark};
140 $opt{color} //= $ENV{NO_COLOR} ? 0 : -t *STDOUT; # enable on tty
141 $opt{'graph-format'} //= '-';
142 $opt{trim} *= $opt{width} / 100 if $opt{trimpct};
143 $opt{units} = [split //, ' kMGTPEZYRQqryzafpn'.($opt{ascii} ? 'u' : 'μ').'m']
144 if $opt{'human-readable'};
145 $opt{'value-length'} = 4 if $opt{units};
146 $opt{'value-length'} = 1 if $opt{unmodified};
147 $opt{'signal-stat'} //= exists $SIG{INFO} ? 'INFO' : 'QUIT';
148 $opt{markers} //= '=avg >31.73v <68.27v +50v |0';
149 $opt{report} //= join('',
150 '${partsum+; $_ .= " of "}',
151 '${sum+; color(1); $_ .= " total in "}',
153 '${lines#; $_ = $_ != @order && " over $_ lines"}',
154 sprintf('${count: (%s)}', join ', ',
155 '${min; color(31)} min',
156 '${avg; $opt{reformat} or $_ = sprintf "%0.2f", $_; color(36)} avg',
157 '${max; color(32)} max',
160 $opt{palette} //= $opt{color} && [31, 90, 32];
161 $opt{indicators} = [split //, $opt{indicators} ||
162 ($opt{ascii} ? ' .oO' : $opt{spark} ? ' ▁▂▃▄▅▆▇█' : ' ▏▎▍▌▋▊▉█')
163 ] if defined $opt{indicators} or $opt{spark};
164 $opt{input} = (@ARGV && $ARGV[0] =~ m/\A[-0-9]/) ? \@ARGV : undef
165 and undef $opt{interval};
167 $opt{'calc-format'} = sub { sprintf '%*.*f', 0, 2, $_[0] };
168 $opt{'value-format'} = $opt{sexagesimal} ? sub {
169 my $s = abs($_[0]) + .5;
170 sprintf('%s%d:%02d:%02d', $_[0] < 0 && '-', $s/3600, $s/60%60, $s%60);
171 } : $opt{units} && sub {
173 log(abs $_[0] || 1) / log(10)
174 - 3 * (abs($_[0]) < .9995) # shift to smaller unit if below 1
175 + 1e-15 # float imprecision
177 my $decimal = ($unit % 3) == ($unit < 0);
178 $unit -= log($decimal ? .995 : .9995) / log(10); # rounded
179 $decimal = ($unit % 3) == ($unit < 0);
180 $decimal &&= $_[0] !~ /^-?0*[0-9]{1,3}$/; # integer 0..999
182 3 + ($_[0] < 0), # digits plus optional negative sign
184 $_[0] / 1000 ** int($unit/3), # number
185 $#{$opt{units}} * 1.5 < abs $unit ? sprintf('e%d', $unit) :
186 $opt{units}->[$unit/3] # suffix
188 } and $opt{reformat}++;
189 $opt{'value-format'} ||= sub { sprintf '%.8g', $_[0] };
192 my (@lines, @values, @order, %uniq);
194 $SIG{$_} = \&show_stat for $opt{'signal-stat'} || ();
197 alarm $opt{interval} if defined $opt{interval} and $opt{interval} > 0;
199 $SIG{INT} = \&show_exit;
201 if (defined $opt{interval}) {
202 $opt{interval} ||= 1;
203 alarm $opt{interval} if $opt{interval} > 0;
206 require Tie::Array::Sorted;
207 tie @order, 'Tie::Array::Sorted', sub { $_[1] <=> $_[0] };
208 } or warn $@, "Expect slowdown with large datasets!\n"
212 my $float = qr<[0-9]* [.]? [0-9]+ (?: e[+-]?[0-9]+ )?>; # positive numberish
213 my $valmatch = $opt{anchor} // qr/\A/;
214 $valmatch .= !$opt{count} ? qr/( \h* -? $float |)/ :
215 $opt{anchor} ? qr/(\S*)/ : qr/(.*)/;
217 while (defined ($_ = $opt{input} ? shift @{ $opt{input} } : readline)) {
221 $valnum = m/$valmatch/ && $1;
222 $uniq{$valnum}++ and next;
223 push @values, $valnum;
227 s/\A\h*// unless $opt{unmodified};
228 $valnum = s/$valmatch/\n/ && $1;
229 push @values, $valnum;
230 push @order, $valnum if length $valnum;
233 if (defined $opt{trim} and defined $valnum) {
234 my $trimpos = abs $opt{trim};
235 $trimpos -= length $valnum if $opt{unmodified};
237 $_ = substr $_, 0, 2;
239 elsif (length > $trimpos) {
240 # cut and replace (intentional lvalue for speed, contrary to PBP)
241 substr($_, $trimpos - 1) = $opt{ascii} ? '>' : '…';
247 show_lines() if defined $opt{interval} and $opt{interval} < 0
248 and $. % $opt{interval} == 0;
251 $SIG{INT} = 'DEFAULT';
254 $opt{color} and defined $_[0] or return '';
255 return "\e[$_[0]m" if defined wantarray;
256 $_ = color(@_) . $_ . color(0) if defined;
261 state $nr = $opt{hidemin} ? $opt{hidemin}->($#lines) : 0;
262 @lines > $nr or return;
264 my $limit = $opt{hidemax} ? $opt{hidemax}->($#lines, $nr) : $#lines;
267 $_ = $uniq{$_} for @values[$nr .. $limit];
271 @order = sort { $b <=> $a } @order unless tied @order;
272 my $maxval = $opt{maxval} // (
273 $opt{hidemax} ? max grep { length } @values[$nr .. $limit] :
276 my $minval = $opt{minval} // min $order[-1] // (), 0;
277 my $range = $maxval - $minval;
278 $range &&= log $range if $opt{log};
279 my $lenval = $opt{'value-length'} // max map { length } @order;
280 my $len = defined $opt{trim} && $opt{trim} <= 0 ? -$opt{trim} + 1 :
281 max(map { length $values[$_] && length $lines[$_] } $nr .. $limit)
283 my $size = defined $opt{width} && $range &&
284 ($opt{width} - $lenval - $len - !!$opt{indicators}); # bar multiplication
287 if ($opt{markers} and $size > 0) {
288 for my $markspec (split /\h/, $opt{markers}) {
289 my ($char, $func) = split //, $markspec, 2;
291 if ($func eq 'avg') {
292 return sum(@order) / @order;
294 elsif ($func =~ /\A([0-9.]+)v\z/) {
296 "Invalid marker $char: percentile $1 out of bounds\n"
298 my $index = $#order * $1 / 100;
299 return ($order[$index] + $order[$index + .5]) / 2;
301 elsif ($func =~ /\A-?[0-9.]+\z/) {
304 elsif ($func =~ /\A\/($float)\z/) {
305 my @range = my $multiple = my $next = $1;
306 while ($next < $maxval) {
307 $multiple *= 10 if $opt{log};
308 push @range, $next += $multiple;
313 die "Unknown marker $char: $func\n";
322 $pos &&= log $pos if $opt{log};
324 color(36) for $barmark[$pos / $range * $size] = $char;
328 state $lastmax = $maxval;
329 if ($maxval > $lastmax) {
330 print ' ' x ($lenval + $len);
333 ($lastmax - $minval) * $size / $range + .5,
334 '-' x (($values[$nr - 1] - $minval) * $size / $range);
336 say '+' x (($range - $lastmax) * $size / $range + .5);
343 color(31), sprintf('%*s', $lenval, $minval),
344 color(90), '-', color(36), '+',
345 color(32), sprintf('%*s', $size - 3, $maxval),
346 color(90), '-', color(36), '+',
350 while ($nr <= $limit) {
351 my $val = $values[$nr];
354 $rel = $val - $minval;
355 $rel &&= log $rel if $opt{log};
356 $rel = min(1, $rel / $range) if $range; # 0..1
358 my $color = !length $val || !$opt{palette} ? undef :
359 $val == $order[0] ? $opt{palette}->[-1] : # max
360 $val == $order[-1] ? $opt{palette}->[0] : # min
361 $opt{palette}->[ $rel * ($#{$opt{palette}} - 1) + 1 ];
362 my $indicator = $opt{indicators} && $opt{indicators}->[
363 !length($val) || !$#{$opt{indicators}} ? 0 : # blank
364 $#{$opt{indicators}} < 2 ? 1 :
365 $val >= $order[0] ? -1 :
366 $rel * ($#{$opt{indicators}} - 1e-14) + 1
370 say '' if $opt{width} and $nr and $nr % $opt{width} == 0;
371 print color($color), $_ for $indicator;
374 print $indicator if defined $indicator;
377 $val = sprintf("%*s", $lenval,
378 $opt{reformat} ? $opt{'value-format'}->($val) : $val
380 color($color) for $val;
382 my $line = $lines[$nr] =~ s/\n/$val/r;
383 if (not length $val) {
387 printf '%-*s', $len + length($val), $line;
388 if ($rel and $size) {
389 print $barmark[$_] // $opt{'graph-format'}
390 for 1 .. $rel * $size + .5;
397 say $opt{palette} ? color(0) : '' if $opt{spark};
398 %uniq = () if $opt{interval} and $opt{count};
408 my $linemin = !$opt{hidemin} ? 0 :
409 ($vars{start} = $opt{hidemin}->($#lines));
410 my $linemax = !$opt{hidemax} ? $#lines :
411 ($vars{end} = $opt{hidemax}->($#lines, $vars{start}));
413 $vars{partsum} = sum(0, grep {length} @values[$linemin .. $linemax])
414 if $linemin <= $linemax and ($opt{hidemin} or $opt{hidemax});
420 $vars{avg} = $vars{sum} / @order;
422 say varfmt($opt{report}, \%vars);
427 my ($fmt, $vars) = @_;
428 $fmt =~ s[\$\{ \h*+ ((?: [^{}]++ | \{(?1)\} )+) \}]{
429 my ($name, $op, $cmd) = split /\s*([;:])/, $1, 2;
430 my $format = $name =~ s/\+// || $name !~ s/\#// && $opt{reformat};
431 local $_ = $vars->{$name};
433 $_ = $opt{'value-format'}->($_) if $format;
434 if ($cmd and $op eq ':') {
435 $_ = varfmt($cmd, $vars);
439 warn "Error in \$$name report: $@" if $@;
449 show_stat() if $opt{stat};
450 exit 130 if @_; # 0x80+signo
458 barcat [OPTIONS] [FILES|NUMBERS] (=•.•=)
461 -a, --[no-]ascii Restrict user interface to ASCII characters
462 -C, --[no-]color Force colored output of values and bar markers
463 -c, --count Omit repetitions and count the number of
465 -f, --field=([+]N|REGEXP)
466 Compare values after a given number of whitespace
468 --header Prepend a chart axis with minimum and maximum
470 -H, --human-readable Format values using SI unit prefixes
471 --sexagesimal Convert seconds to HH:MM:SS time format
472 -t, --interval[=(N|-LINES)]
473 Output partial progress every given number of
474 seconds or input lines
475 -l, --length=[-]SIZE[%] Trim line contents (between number and bars)
476 -L, --limit=[N|[-]START(-[END]|+N)]
477 Select a range of lines to display
478 -e, --log Logarithmic (exponential) scale instead of linear
479 --graph-format=CHAR Glyph to repeat for the graph line
480 -m, --markers=FORMAT Statistical positions to indicate on bars
481 --min=N, --max=N Bars extend from 0 or the minimum value if lower
482 --palette=(PRESET|COLORS)
483 Override colors of parsed numbers
484 -_, --spark Replace lines by sparklines
485 --indicators[=CHARS] Prefix a unicode character corresponding to each
487 -s, --stat Total statistics after all data
488 -u, --unmodified Do not reformat values, keeping leading whitespace
489 --value-length=SIZE Reserved space for numbers
490 -w, --width=COLUMNS Override the maximum number of columns to use
491 -h, --usage Overview of available options
492 --help Full pod documentation
493 -V, --version Version information
499 barcat - concatenate texts with graph to visualize values
503 B<barcat> [I<options>] [I<file>... | I<numbers>]
507 Visualizes relative sizes of values read from input
508 (parameters, file(s) or STDIN).
509 Contents are concatenated similar to I<cat>,
510 but numbers are reformatted and a bar graph is appended to each line.
512 It can has various options for input and output (re)formatting,
513 but remains limited to one-dimensional charts.
514 For more complex graphing needs
515 you'll need a larger animal like I<gnuplot>.
521 =item B<-a>, B<-->[B<no->]B<ascii>
523 Restrict user interface to ASCII characters,
524 replacing default UTF-8 by their closest approximation.
525 Input is always interpreted as UTF-8 and shown as is.
527 =item B<-C>, B<-->[B<no->]B<color>
529 Force colored output of values and bar markers.
530 Defaults on if output is a tty,
531 disabled otherwise such as when piped or redirected.
532 Can also be disabled by setting B<-M>
533 or the I<NO_COLOR> environment variable.
535 =item B<-c>, B<--count>
537 Omit repetitions and count the number of occurrences.
538 Similar to piping input through C<sort | uniq -c>
539 but keeping the order of first appearances.
541 Lines are omitted if they (or a specified field) are identical,
542 and the amount of matches is prepended and used as values
543 for bars and subsequent statistics.
545 =item B<-f>, B<--field>=([B<+>]I<number> | I<regexp>)
547 Compare values after a given number of whitespace separators,
548 or matching a regular expression.
550 Unspecified or B<-f0> means values are at the start of each line.
551 With B<-f1> the second word is taken instead.
552 A string can indicate the starting position of a value
553 (such as B<-f:> if preceded by colons),
554 or capture the numbers itself,
555 for example B<-f'(\d+)'> for the first digits anywhere.
556 A shorthand for this is C<+0>, or C<+N> to find the Nth number.
560 Prepend a chart axis with minimum and maximum values labeled.
562 =item B<-H>, B<--human-readable>
564 Format values using SI unit prefixes,
565 turning long numbers like C<12356789> into C<12.4M>.
566 Also changes an exponent C<1.602176634e-19> to C<160.2z>.
567 Short integers are aligned but kept without decimal point.
569 =item B<--sexagesimal>
571 Convert seconds to HH:MM:SS time format.
573 =item B<-t>, B<--interval>[=(I<seconds> | B<->I<lines>)]
575 Output partial progress every given number of seconds or input lines.
576 An update can also be forced by sending a I<SIGALRM> alarm signal.
578 =item B<-l>, B<--length>=[B<->]I<size>[B<%>]
580 Trim line contents (between number and bars)
581 to a maximum number of characters.
582 The exceeding part is replaced by an abbreviation sign,
583 unless B<--length=0>.
585 Prepend a dash (i.e. make negative) to enforce padding
586 regardless of encountered contents.
588 =item B<-L>, B<--limit>=[I<count> | [B<->]I<start>(B<->[I<end>] | B<+>I<count>)]
590 Select a range of lines to display.
591 A single integer indicates the last line number (like I<head>),
592 or first line counting from the bottom if negative (like I<tail>).
594 A range consists of a starting line number followed by either
595 a dash C<-> to an optional end, or plus sign C<+> with count.
597 All hidden input is still counted and analyzed for statistics,
598 but disregarded for padding and bar size.
600 =item B<-e>, B<--log>
602 Logarithmic (B<e>xponential) scale instead of linear
603 to compare orders of magnitude.
605 =item B<--graph-format>=I<character>
607 Glyph to repeat for the graph line.
608 Defaults to a dash C<->.
610 =item B<-m>, B<--markers>=I<format>
612 Statistical positions to indicate on bars.
613 A single indicator glyph precedes each position:
619 Exact value to match on the axis.
620 A vertical bar at the zero crossing is displayed by C<|0>
622 For example C<π3.14> would locate pi.
624 =item B</>I<interval>
626 Repeated at every multiple of a number.
627 For example C<:/1> for a grid at every integer.
629 =item I<percentage>B<v>
631 Ranked value at the given percentile.
632 The default shows C<+> at C<50v> for the mean or median;
633 the middle value or average between middle values.
634 One standard deviation right of the mean is at about C<68.3v>.
635 The default includes C<< >31.73v <68.27v >>
636 to encompass all I<normal> results, or 68% of all entries, by I<< <--> >>.
641 the sum of all values divided by the number of counted lines.
642 Indicated by default as C<=>.
646 =item B<--min>=I<number>, B<--max>=I<number>
648 Bars extend from 0 or the minimum value if lower,
649 to the largest value encountered.
650 These options can be set to customize this range.
652 =item B<--palette>=(I<preset> | I<color>...)
654 Override colors of parsed numbers.
655 Can be any CSI escape, such as C<90> for default dark gray,
656 or alternatively C<1;30> for bright black.
658 In case of additional colors,
659 the last is used for values equal to the maximum, the first for minima.
660 If unspecified, these are green and red respectively (C<31 90 32>).
661 Multiple intermediate colors will be distributed
662 relative to the size of values.
664 A non-numeric name can refer to a predefined color scheme:
670 Minimal set of monochrome brightnesses.
674 Utilize the 24 grayscale ramp in 256-color terminals.
678 Gradient red to white in 7 out of 16 colors.
682 Extended to 17 colors out of 256.
686 Saturated red to green to blue to red.
690 All 215 extended colors in unrelated orders.
694 =item B<-_>, B<--spark>
696 Replace lines by I<sparklines>,
697 single characters (configured by B<--indicators>)
698 corresponding to input values.
700 =item B<--indicators>[=I<characters>]
702 Prefix a unicode character corresponding to each value.
703 The first specified character will be used for non-values,
704 the remaining sequence will be distributed over the range of values.
705 Unspecified, block fill glyphs U+2581-2588 will be used.
707 =item B<-s>, B<--stat>
709 Total statistics after all data.
711 While processing (possibly a neverending pipe),
712 intermediate results are also shown on signal I<SIGINFO> if available (control+t on BSDs)
713 or I<SIGQUIT> otherwise (ctrl+\ on linux).
715 =item B<-u>, B<--unmodified>
717 Do not reformat values, keeping leading whitespace.
718 Keep original value alignment, which may be significant in some programs.
720 =item B<--value-length>=I<size>
722 Reserved space for numbers.
724 =item B<-w>, B<--width>=I<columns>
726 Override the maximum number of columns to use.
727 Appended graphics will extend to fill up the entire screen,
728 otherwise determined by the environment variable I<COLUMNS>
729 or by running the I<tput> command.
731 =item B<-h>, B<--usage>
733 Overview of available options.
737 Full pod documentation
738 as rendered by perldoc.
740 =item B<-V>, B<--version>
750 seq 30 | awk '{print sin($1/10)}' | barcat
752 Compare file sizes (with human-readable numbers):
754 du -d0 -b * | barcat -H
756 Same from formatted results, selecting the first numeric value:
758 tree -s --noreport | barcat -H -f+
760 Compare media metadata, like image size or play time:
762 exiftool -T -p '$megapixels ($imagesize) $filename' * | barcat
764 exiftool -T -p '$duration# $avgbitrate# $filename' * | barcat --sexagesimal
766 find -type f -print0 | xargs -0 -L1 \
767 ffprobe -show_format -of json -v error |
768 jq -r '.format|.duration+" "+.bit_rate+" "+.filename' | barcat --sex
770 Memory usage of user processes with long names truncated:
772 ps xo rss,pid,cmd | barcat -l40
774 Monitor network latency from prefixed results:
776 ping google.com | barcat -f'time=\K' -t
778 Commonly used after counting, eg letter frequencies in text files:
780 cat /usr/share/games/fortunes/*.u8 |
781 perl -CS -nE 'say for grep length, split /\PL*/, uc' |
782 sort | uniq -c | barcat
784 Users on the current server while preserving order:
786 users | tr ' ' '\n' | barcat -c
788 Number of HTTP requests per day:
790 barcat -cf'\[([^:]+)' httpd/access.log
792 Any kind of database query results, preserving returned alignment:
794 echo 'SELECT sin(value * .1) FROM generate_series(0, 30) value' |
797 In PostgreSQL from within the client; a fancy C<\dt+> perhaps:
799 > SELECT schemaname, relname, pg_total_relation_size(relid)
800 FROM pg_statio_user_tables ORDER BY idx_blks_hit
803 Same thing in SQLite (requires the sqlite3 client):
806 > SELECT name, sum(pgsize) FROM dbstat GROUP BY 1;
808 Earthquakes worldwide magnitude 1+ in the last 24 hours:
810 curl https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/1.0_day.csv |
811 column -ts, -n | barcat -f4 -u -l80%
813 External datasets, like movies per year:
815 curl https://github.com/prust/wikipedia-movie-data/raw/master/movies.json -L |
816 jq .[].year | uniq -c | barcat
818 Pokémon height comparison:
820 curl https://github.com/Biuni/PokemonGO-Pokedex/raw/master/pokedex.json -L |
821 jq -r '.pokemon[] | [.height,.num,.name] | join(" ")' | barcat
823 USD/EUR exchange rate from CSV provided by the ECB:
825 curl https://sdw.ecb.europa.eu/export.do \
826 -Gd 'node=SEARCHRESULTS&q=EXR.D.USD.EUR.SP00.A&exportType=csv' |
827 barcat -f',\K' --value-length=7
829 Total population history in XML from the World Bank:
831 curl http://api.worldbank.org/v2/country/1W/indicator/SP.POP.TOTL |
832 xmlstarlet sel -t -m '*/*' -v wb:date -o ' ' -v wb:value -n |
833 barcat -f1 -H --markers=+/1e9
835 Population and other information for all countries:
837 curl http://download.geonames.org/export/dump/countryInfo.txt |
838 grep -v '^#\s' | column -ts$'\t' -n | barcat -f+2 -e -u -l150 -s
840 And of course various Git statistics, such commit count by year:
842 git log --pretty=%ci | cut -b-4 | uniq -c | barcat
844 Or the top 3 most frequent authors with statistics over all:
846 git shortlog -sn | barcat -L3 -s
848 Activity graph of the last days (substitute date C<-v-{}d> on BSD):
850 ( git log --pretty=%ci --since=30day | cut -b-10
851 seq 0 30 | xargs -i date +%F -d-{}day ) |
852 sort | uniq -c | awk '$1--' | barcat --spark
854 Sparkline graphics of simple input given as inline parameters:
856 barcat -_ 3 1 4 1 5 0 9 2 4
858 Misusing the spark functionality to draw a lolcat line:
860 seq $(tput cols) | barcat --spark --indicator=- --palette=rainbow
864 Mischa POSLAWSKY <perl@shiar.org>