my %opt;
GetOptions(\%opt,
'color|c!',
- 'follow|f:i',
+ 'C' => sub { $opt{color} = 0 },
+ 'interval|t:i',
'trim|length|l=s' => sub {
my ($optname, $optval) = @_;
$optval =~ s/%$// and $opt{trimpct}++;
$opt{color} //= -t *STDOUT; # enable on tty
$opt{trim} *= $opt{width} / 100 if $opt{trimpct};
-if (defined $opt{follow}) {
- $opt{follow} ||= 1;
+if (defined $opt{interval}) {
+ $opt{interval} ||= 1;
$SIG{ALRM} = sub {
show_lines();
- alarm $opt{follow};
+ alarm $opt{interval};
};
- alarm $opt{follow};
+ alarm $opt{interval};
}
$SIG{INT} = 'IGNORE'; # continue after assumed eof
my $minval = min $order[-1], 0;
my $lenval = max map { length } @order;
my $len = defined $opt{trim} && $opt{trim} <= 0 ? -$opt{trim} + 1 :
- 1 + max map { length } @lines; # left padding
+ 1 + max map { length $values[$_] && length $lines[$_] } 0 .. $#lines; # left padding
my $size = ($maxval - $minval) &&
($opt{width} - $lenval - $len) / ($maxval - $minval); # bar multiplication
Defaults on if output is a tty,
disabled otherwise such as when piped or redirected.
-=item -f, --follow[=<seconds>]
+=item -t, --interval[=<seconds>]
-Interval to output partial progress.
+Interval time to output partial progress.
=item -l, --length=[-]<size>[%]
echo 'SELECT count(*),schemaname FROM pg_tables GROUP BY 2' |
psql -t | graph -u
+Exchange rate USD/EUR history from CSV download provided by ECB:
+
+ curl https://sdw.ecb.europa.eu/export.do \
+ -Gd 'node=SEARCHRESULTS&q=EXR.D.USD.EUR.SP00.A&exportType=csv' |
+ awk -F, '{RS="\r\n"} /^[12]/{print $2,$1}' | graph
+
+Total population history from the World Bank dataset (XML):
+
+ curl http://api.worldbank.org/v2/country/1W/indicator/SP.POP.TOTL |
+ xmllint --xpath '//*[local-name()="date" or local-name()="value"]' - |
+ awk -F'<[^>]+>' 'BEGIN {RS="</wb:value>"} {print $4,$2}' | graph
+
+Movies per year from prepared JSON data:
+
+ curl https://github.com/prust/wikipedia-movie-data/raw/master/movies.json |
+ jq '.[].year' | uniq -c | graph
+
+Pokémon height comparison:
+
+ curl https://github.com/Biuni/PokemonGO-Pokedex/raw/master/pokedex.json |
+ jq -r '.pokemon[] | [.height,.num,.name] | join(" ")' | graph
+
Git statistics, such commit count by year:
git log --pretty=%ci | cut -b-4 | uniq -c | graph
Latency history:
ping google.com |
- perl -pe '$|=1; print s/ time=(.*)// ? "$1 for " : "> "' | graph -f
+ perl -pe '$|=1; print s/ time=(.*)// ? "$1 for " : "> "' | graph -t
=head1 AUTHOR