X-Git-Url: http://git.shiar.nl/barcat.git/blobdiff_plain/d91b9999c3add998accda17038ce123d0d5a73c1..6b650ba2ecae66117e944cebf5f33a6adaa618d9:/barcat diff --git a/barcat b/barcat index a7c67ee..c3c0dfd 100755 --- a/barcat +++ b/barcat @@ -1,30 +1,39 @@ #!/usr/bin/perl -CA -use 5.018; +use 5.014; use warnings; use utf8; use List::Util qw( min max sum ); use open qw( :std :utf8 ); -use experimental qw( lexical_subs ); +use re '/msx'; -our $VERSION = '1.05'; +our $VERSION = '1.09'; -use Getopt::Long '2.33', qw( :config gnu_getopt ); my %opt; +if (@ARGV) { +require Getopt::Long; +Getopt::Long->import('2.33', qw( :config gnu_getopt )); GetOptions(\%opt, - 'color|c!', - 'C' => sub { $opt{color} = 0 }, + 'ascii|a!', + 'color|C!', + 'M' => sub { $opt{color} = 0 }, 'field|f=s' => sub { eval { local $_ = $_[1]; - $opt{anchor} = /^[0-9]+$/ ? qr/(?:\S*\h+){$_}\K/ : qr/$_/; - } or die $@ =~ s/(?: at .+)?$/ for option $_[0]/r; + s/\A[0-9]+\z/(?:\\S*\\h+){$_}\\K/; + s{\A[+]([0-9]*)\z}{ + (!!$1 && '(?:\d+\D+\b){'.$1.'}\K') . '\s* (?=\d)' + }e; + $opt{anchor} = qr/$_/; + } or die $@ =~ s/(?:\ at\ \N+)?\Z/ for option $_[0]/r; }, 'human-readable|H!', + 'sexagesimal!', + 'reformat!', 'interval|t:i', 'trim|length|l=s' => sub { my ($optname, $optval) = @_; $optval =~ s/%$// and $opt{trimpct}++; - $optval =~ m/^-?[0-9]+$/ or die( + $optval =~ m/\A-?[0-9]+\z/ or die( "Value \"$optval\" invalid for option $optname", " (number or percentage expected)\n" ); @@ -33,40 +42,64 @@ GetOptions(\%opt, 'value-length=i', 'hidemin=i', 'hidemax=i', - 'limit|L=s' => sub { + 'minval=f', + 'maxval=f', + 'limit|L:s' => sub { my ($optname, $optval) = @_; $optval ||= 0; + $optval =~ /\A-[0-9]+\z/ and $optval .= '-'; # tail shorthand ($opt{hidemin}, $opt{hidemax}) = - $optval =~ m/\A (?: ([0-9]+)? - )? ([0-9]+)? \z/x or die( + $optval =~ m/\A (?: (-? [0-9]+)? - )? ([0-9]+)? \z/ or die( "Value \"$optval\" invalid for option limit", " (range expected)\n" ); }, + 'log|e!', + 'header!', 'markers|m=s', 'graph-format=s' => sub { $opt{'graph-format'} = substr $_[1], 0, 1; }, - 'spark:s' => sub { - $opt{spark} = [split //, $_[1] || '▁▂▃▄▅▆▇█']; + 'spark|_!', + 'indicators:s', + 'palette=s' => sub { + $opt{palette} = { + '' => [], + fire => [qw( 90 31 91 33 93 97 96 )], + fire256=> [map {"38;5;$_"} qw( + 235 52 88 124 160 196 + 202 208 214 220 226 227 228 229 230 231 159 + )], + whites => [qw( 1;30 0;37 1;37 )], + greys => [map {"38;5;$_"} 0, 232..255, 15], + random => [map {"38;5;$_"} List::Util::shuffle(17..231)], + rainbow=> [map {"38;5;$_"} + 196, # r + (map { 196 + $_*6 } 0..4), # +g + (map { 226 - $_*6*6 } 0..4), # -r + (map { 46 + $_ } 0..4), # +b + (map { 51 - $_*6 } 0..4), # -g + (map { 21 + $_*6*6 } 0..4), # +r + (map { 201 - $_ } 0..4), # -b + 196, + ], + }->{$_[1]} // do { + my @vals = split /[^0-9;]/, $_[1] + or die "Empty palette resulting from \"$_[1]\"\n"; + \@vals; + }; }, 'stat|s!', 'signal-stat=s', 'unmodified|u!', 'width|w=i', + 'version|V' => sub { + my $mascot = $opt{ascii} ? '=^,^=' : 'ฅ^•ﻌ•^ฅ'; + say "barcat $mascot version $VERSION"; + exit; + }, 'usage|h' => sub { - local $/; - my $pod = readline *DATA; - $pod =~ s/^=over\K/ 22/m; # indent options list - $pod =~ s/^=item \N*\n\n\N*\n\K(?:(?:^=over.*?^=back\n)?(?!=)\N*\n)*/\n/msg; - - require Pod::Usage; - my $parser = Pod::Usage->new; - $parser->select('SYNOPSIS', 'OPTIONS'); - $parser->output_string(\my $contents); - $parser->parse_string_document($pod); - - $contents =~ s/\n(?=\n\h)//msg; # strip space between items - print $contents; + /^=/ ? last : print for readline *DATA; # text between __END__ and pod exit; }, 'help|?' => sub { @@ -76,16 +109,51 @@ GetOptions(\%opt, ); }, ) or exit 64; # EX_USAGE +} -$opt{width} ||= $ENV{COLUMNS} || 80; -$opt{color} //= -t *STDOUT; # enable on tty +$opt{width} ||= $ENV{COLUMNS} || qx(tput cols) || 80 unless $opt{spark}; +$opt{color} //= $ENV{NO_COLOR} ? 0 : -t *STDOUT; # enable on tty $opt{'graph-format'} //= '-'; $opt{trim} *= $opt{width} / 100 if $opt{trimpct}; -$opt{units} = [split //, ' kMGTPEZYyzafpnμm'] if $opt{'human-readable'}; +$opt{units} = [split //, ' kMGTPEZYyzafpn'.($opt{ascii} ? 'u' : 'μ').'m'] + if $opt{'human-readable'}; $opt{anchor} //= qr/\A/; -$opt{'value-length'} = 6 if $opt{units}; +$opt{'value-length'} = 4 if $opt{units}; $opt{'value-length'} = 1 if $opt{unmodified}; $opt{'signal-stat'} //= exists $SIG{INFO} ? 'INFO' : 'QUIT'; +$opt{markers} //= '=avg >31.73v <68.27v +50v |0'; +$opt{palette} //= $opt{color} && [31, 90, 32]; +$opt{indicators} = [split //, $opt{indicators} || + ($opt{ascii} ? ' .oO' : $opt{spark} ? ' ▁▂▃▄▅▆▇█' : ' ▏▎▍▌▋▊▉█') +] if defined $opt{indicators} or $opt{spark}; +$opt{hidemin} = ($opt{hidemin} || 1) - 1; +$opt{input} = (@ARGV && $ARGV[0] =~ m/\A[-0-9]/) ? \@ARGV : undef + and undef $opt{interval}; + +$opt{'calc-format'} = sub { sprintf '%*.*f', 0, 2, $_[0] }; +$opt{'value-format'} = $opt{sexagesimal} ? sub { + my $s = abs($_[0]) + .5; + sprintf('%s%d:%02d:%02d', $_[0] < 0 && '-', $s/3600, $s/60%60, $s%60); +} : $opt{units} && sub { + my $unit = ( + log(abs $_[0] || 1) / log(10) + - 3 * (abs($_[0]) < .9995) # shift to smaller unit if below 1 + + 1e-15 # float imprecision + ); + my $decimal = ($unit % 3) == ($unit < 0); + $unit -= log($decimal ? .995 : .9995) / log(10); # rounded + $decimal = ($unit % 3) == ($unit < 0); + $decimal &&= $_[0] !~ /^-?0*[0-9]{1,3}$/; # integer 0..999 + sprintf('%*.*f%1s', + 3 + ($_[0] < 0), # digits plus optional negative sign + $decimal, # tenths + $_[0] / 1000 ** int($unit/3), # number + $#{$opt{units}} * 1.5 < abs $unit ? sprintf('e%d', $unit) : + $opt{units}->[$unit/3] # suffix + ); +} and $opt{reformat}++; +$opt{'value-format'} ||= sub { sprintf '%.8g', $_[0] }; + my (@lines, @values, @order); @@ -106,20 +174,24 @@ if (defined $opt{interval}) { } or warn $@, "Expect slowdown with large datasets!\n"; } -my $valmatch = qr/$opt{anchor} ( \h* -? [0-9]* \.? [0-9]+ (?: e[+-]?[0-9]+ )? |)/x; -while (readline) { +my $valmatch = qr< + $opt{anchor} ( \h* -? [0-9]* [.]? [0-9]+ (?: e[+-]?[0-9]+ )? |) +>x; +while (defined ($_ = $opt{input} ? shift @{ $opt{input} } : readline)) { s/\r?\n\z//; - s/^\h*// unless $opt{unmodified}; - push @values, s/$valmatch/\n/ && $1; - push @order, $1 if length $1; - if (defined $opt{trim} and defined $1) { + s/\A\h*// unless $opt{unmodified}; + my $valnum = s/$valmatch/\n/ && $1; + push @values, $valnum; + push @order, $valnum if length $valnum; + if (defined $opt{trim} and defined $valnum) { my $trimpos = abs $opt{trim}; - $trimpos -= length $1 if $opt{unmodified}; + $trimpos -= length $valnum if $opt{unmodified}; if ($trimpos <= 1) { $_ = substr $_, 0, 2; } elsif (length > $trimpos) { - substr($_, $trimpos - 1) = '…'; + # cut and replace (intentional lvalue for speed, contrary to PBP) + substr($_, $trimpos - 1) = $opt{ascii} ? '>' : '…'; } } push @lines, $_; @@ -137,103 +209,167 @@ sub color { sub show_lines { -state $nr = $opt{hidemin} ? $opt{hidemin} - 1 : 0; -@lines and @lines > $nr or return; -@lines or return; -@lines > $nr or return unless $opt{hidemin}; +state $nr = + $opt{hidemin} < 0 ? max(0, @lines + $opt{hidemin} + 1) : + $opt{hidemin}; +@lines > $nr or return; + +my $limit = $#lines; +if (defined $opt{hidemax}) { + if ($opt{hidemin} and $opt{hidemin} < 0) { + $limit -= $opt{hidemax} - 1; + } + elsif ($opt{hidemax} <= $limit) { + $limit = $opt{hidemax} - 1; + } +} @order = sort { $b <=> $a } @order unless tied @order; -my $maxval = ($opt{hidemax} ? max grep { length } @values[0 .. $opt{hidemax} - 1] : $order[0]) // 0; -my $minval = min $order[-1] // (), 0; +my $maxval = $opt{maxval} // ( + $opt{hidemax} ? max grep { length } @values[$nr .. $limit] : + $order[0] +) // 0; +my $minval = $opt{minval} // min $order[-1] // (), 0; +my $range = $maxval - $minval; +$range &&= log $range if $opt{log}; my $lenval = $opt{'value-length'} // max map { length } @order; my $len = defined $opt{trim} && $opt{trim} <= 0 ? -$opt{trim} + 1 : max map { length $values[$_] && length $lines[$_] } 0 .. min $#lines, $opt{hidemax} || (); # left padding -my $size = ($maxval - $minval) && - ($opt{width} - $lenval - $len) / ($maxval - $minval); # bar multiplication +my $size = defined $opt{width} && $range && + ($opt{width} - $lenval - $len - !!$opt{indicators}); # bar multiplication my @barmark; -if ($opt{markers} // 1 and $size > 0) { - my sub orderpos { (($order[$_[0]] + $order[$_[0] + .5]) / 2 - $minval) * $size } - $barmark[ (sum(@order) / @order - $minval) * $size ] = '='; # average - $barmark[ orderpos($#order * .31731) ] = '>'; - $barmark[ orderpos($#order * .68269) ] = '<'; - $barmark[ orderpos($#order / 2) ] = '+'; # mean - $barmark[ -$minval * $size ] = '|' if $minval < 0; # zero - color(36) for @barmark; +if ($opt{markers} and $size > 0) { + for my $markspec (split /\h/, $opt{markers}) { + my ($char, $func) = split //, $markspec, 2; + my $pos = eval { + if ($func eq 'avg') { + return sum(@order) / @order; + } + elsif ($func =~ /\A([0-9.]+)v\z/) { + $1 <= 100 or die( + "Invalid marker $char: percentile $1 out of bounds\n" + ); + my $index = $#order * $1 / 100; + return ($order[$index] + $order[$index + .5]) / 2; + } + elsif ($func =~ /\A-?[0-9.]+\z/) { + return $func; + } + else { + die "Unknown marker $char: $func\n"; + } + }; + defined $pos or do { + warn $@ if $@; + next; + }; + $pos -= $minval; + $pos &&= log $pos if $opt{log}; + $pos >= 0 or next; + color(36) for $barmark[$pos / $range * $size] = $char; + } state $lastmax = $maxval; if ($maxval > $lastmax) { print ' ' x ($lenval + $len); printf color(90); printf '%-*s', - ($lastmax - $minval) * $size + .5, - '-' x (($values[$nr - 1] - $minval) * $size); + ($lastmax - $minval) * $size / $range + .5, + '-' x (($values[$nr - 1] - $minval) * $size / $range); print color(92); - say '+' x (($maxval - $lastmax - $minval) * $size + .5); + say '+' x (($range - $lastmax) * $size / $range + .5); print color(0); $lastmax = $maxval; } } -@lines > $nr or return if $opt{hidemin}; - -sub sival { - my $unit = int(log(abs $_[0] || 1) / log(10) - 3*($_[0] < 1) + 1e-15); - my $float = $_[0] !~ /^0*[-0-9]{1,3}$/; - sprintf('%3.*f%1s', - $float && ($unit % 3) == ($unit < 0), # tenths - $_[0] / 1000 ** int($unit/3), # number - $#{$opt{units}} * 1.5 < abs $unit ? "e$unit" : $opt{units}->[$unit/3] - ); -} +say( + color(31), sprintf('%*s', $lenval, $minval), + color(90), '-', color(36), '+', + color(32), sprintf('%*s', $size - 3, $maxval), + color(90), '-', color(36), '+', + color(0), +) if $opt{header}; -while ($nr <= $#lines) { - $nr >= $opt{hidemax} and last if defined $opt{hidemax}; +while ($nr <= $limit) { my $val = $values[$nr]; + my $rel; + if (length $val) { + $rel = $val - $minval; + $rel &&= log $rel if $opt{log}; + $rel = min(1, $rel / $range) if $range; # 0..1 + } + my $color = !length $val || !$opt{palette} ? undef : + $val == $order[0] ? $opt{palette}->[-1] : # max + $val == $order[-1] ? $opt{palette}->[0] : # min + $opt{palette}->[ $rel * ($#{$opt{palette}} - 1) + 1 ]; + my $indicator = $opt{indicators} && $opt{indicators}->[ + !length($val) || !$#{$opt{indicators}} ? 0 : # blank + $#{$opt{indicators}} < 2 ? 1 : + $val >= $order[0] ? -1 : + $rel * ($#{$opt{indicators}} - 1e-14) + 1 + ]; if ($opt{spark}) { - print $opt{spark}->[ ($val - $minval) / $maxval * $#{$opt{spark}} ]; + say '' if $opt{width} and $nr and $nr % $opt{width} == 0; + print color($color), $_ for $indicator; next; } + print $indicator if defined $indicator; if (length $val) { - my $color = !$opt{color} ? undef : - $val == $order[0] ? 32 : # max - $val == $order[-1] ? 31 : # min - 90; - $val = $opt{units} ? sival($val) : sprintf "%*s", $lenval, $val; + $val = sprintf("%*s", $lenval, + $opt{reformat} ? $opt{'value-format'}->($val) : $val + ); color($color) for $val; } my $line = $lines[$nr] =~ s/\n/$val/r; + if (not length $val) { + say $line; + next; + } printf '%-*s', $len + length($val), $line; - print $barmark[$_] // $opt{'graph-format'} for 1 .. $size && (($values[$nr] || 0) - $minval) * $size + .5; + if ($rel and $size) { + print $barmark[$_] // $opt{'graph-format'} + for 1 .. $rel * $size + .5; + } say ''; } continue { $nr++; } -say '' if $opt{spark}; +say $opt{palette} ? color(0) : '' if $opt{spark}; + return $nr; } sub show_stat { if ($opt{hidemin} or $opt{hidemax}) { - $opt{hidemin} ||= 1; - $opt{hidemax} ||= @lines; - printf '%s of ', sum(@values[$opt{hidemin} - 1 .. $opt{hidemax} - 1]) // 0; + my $linemin = $opt{hidemin}; + my $linemax = ($opt{hidemax} || @lines) - 1; + if ($linemin < 0) { + $linemin += @lines; + $linemax = @lines - $linemax; + } + printf '%.8g of ', $opt{'value-format'}->( + sum(grep {length} @values[$linemin .. $linemax]) // 0 + ); } if (@order) { my $total = sum @order; - printf '%s total', color(1) . $total . color(0); - printf ' in %d values', scalar @values; + printf '%s total', color(1) . $opt{'value-format'}->($total) . color(0); + printf ' in %d values', scalar @order; + printf ' over %d lines', scalar @lines if @order != @lines; printf(' (%s min, %s avg, %s max)', - color(31) . $order[-1] . color(0), - color(36) . (sprintf '%*.*f', 0, 2, $total / @order) . color(0), - color(32) . $order[0] . color(0), + color(31) . ($opt{reformat} ? $opt{'value-format'} : sub {$_[0]})->($order[-1]) . color(0), + color(36) . ($opt{reformat} ? $opt{'value-format'} : $opt{'calc-format'})->($total / @order) . color(0), + color(32) . ($opt{reformat} ? $opt{'value-format'} : sub {$_[0]})->($order[0]) . color(0), ); } say ''; + return 1; } sub show_exit { @@ -246,19 +382,56 @@ sub show_exit { show_exit(); __END__ +Usage: /\_/\ + barcat [OPTIONS] [FILES|NUMBERS] (=•.•=) + (u u) +Options: + -a, --[no-]ascii Restrict user interface to ASCII characters + -C, --[no-]color Force colored output of values and bar markers + -f, --field=([+]N|REGEXP) + Compare values after a given number of whitespace + separators + --header Prepend a chart axis with minimum and maximum + values labeled + -H, --human-readable Format values using SI unit prefixes + --sexagesimal Convert seconds to HH:MM:SS time format + -t, --interval[=(N|-LINES)] + Output partial progress every given number of + seconds or input lines + -l, --length=[-]SIZE[%] Trim line contents (between number and bars) + -L, --limit[=(N|-LAST|START-[END])] + Stop output after a number of lines + -e, --log Logarithmic (exponential) scale instead of linear + --graph-format=CHAR Glyph to repeat for the graph line + -m, --markers=FORMAT Statistical positions to indicate on bars + --min=N, --max=N Bars extend from 0 or the minimum value if lower + --palette=(PRESET|COLORS) + Override colors of parsed numbers + -_, --spark Replace lines by sparklines + --indicators[=CHARS] Prefix a unicode character corresponding to each + value + -s, --stat Total statistics after all data + -u, --unmodified Do not reformat values, keeping leading whitespace + --value-length=SIZE Reserved space for numbers + -w, --width=COLUMNS Override the maximum number of columns to use + -h, --usage Overview of available options + --help Full pod documentation + -V, --version Version information + =encoding utf8 =head1 NAME -barcat - graph to visualize input values +barcat - concatenate texts with graph to visualize values =head1 SYNOPSIS -B [] [] +B [] [... | ] =head1 DESCRIPTION -Visualizes relative sizes of values read from input (file(s) or STDIN). +Visualizes relative sizes of values read from input +(parameters, file(s) or STDIN). Contents are concatenated similar to I, but numbers are reformatted and a bar graph is appended to each line. @@ -272,13 +445,21 @@ you'll need a larger animal like I. =over -=item -c, --[no-]color +=item -a, --[no-]ascii + +Restrict user interface to ASCII characters, +replacing default UTF-8 by their closest approximation. +Input is always interpreted as UTF-8 and shown as is. + +=item -C, --[no-]color Force colored output of values and bar markers. Defaults on if output is a tty, disabled otherwise such as when piped or redirected. +Can also be disabled by setting I<-M> +or the I environment variable. -=item -f, --field=(|) +=item -f, --field=([+] | ) Compare values after a given number of whitespace separators, or matching a regular expression. @@ -289,6 +470,11 @@ A string can indicate the starting position of a value (such as I<-f:> if preceded by colons), or capture the numbers itself, for example I<-f'(\d+)'> for the first digits anywhere. +A shorthand for this is I<+0>, or I<+N> to find the Nth number. + +=item --header + +Prepend a chart axis with minimum and maximum values labeled. =item -H, --human-readable @@ -297,7 +483,11 @@ turning long numbers like I<12356789> into I<12.4M>. Also changes an exponent I<1.602176634e-19> to I<160.2z>. Short integers are aligned but kept without decimal point. -=item -t, --interval[=(|-)] +=item --sexagesimal + +Convert seconds to HH:MM:SS time format. + +=item -t, --interval[=( | -)] Output partial progress every given number of seconds or input lines. An update can also be forced by sending a I alarm signal. @@ -312,54 +502,90 @@ unless C<--length=0>. Prepend a dash (i.e. make negative) to enforce padding regardless of encountered contents. -=item -L, --limit=(|-[]) +=item -L, --limit[=( | - | -[])] Stop output after a number of lines. +A single value indicates the last line number (like C), +or first line counting from the bottom if negative (like C). +A specific range can be given by two values. + All input is still counted and analyzed for statistics, but disregarded for padding and bar size. +=item -e, --log + +Logarithmic (Ixponential) scale instead of linear +to compare orders of magnitude. + =item --graph-format= Glyph to repeat for the graph line. Defaults to a dash C<->. -=item -m, --markers= +=item -m, --markers= Statistical positions to indicate on bars. -Cannot be customized yet, -only disabled by providing an empty argument. - -Any value enables all marker characters: +A single indicator glyph precedes each position: =over 2 -=item B<=> +=item -Average: -the sum of all values divided by the number of counted lines. +Exact value to match on the axis. +A vertical bar at the zero crossing is displayed by I<|0> +for negative values. +For example I<:3.14> would show a colon at pi. -=item B<+> +=item I -Mean, median: +Ranked value at the given percentile. +The default shows I<+> at I<50v> for the mean or median; the middle value or average between middle values. +One standard deviation right of the mean is at about I<68.3v>. +The default includes I<< >31.73v <68.27v >> +to encompass all I results, or 68% of all entries, by B<< <--> >>. -=item B<<> +=item I -Standard deviation left of the mean. -Only 16% of all values are lower. +Matches the average; +the sum of all values divided by the number of counted lines. +Indicated by default as I<=>. -=item B<< > >> +=back -Standard deviation right of the mean. -The part between B<< <--> >> encompass all I results, -or 68% of all entries. +=item --min=, --max= -=back +Bars extend from 0 or the minimum value if lower, +to the largest value encountered. +These options can be set to customize this range. -=item --spark +=item --palette=( | ...) + +Override colors of parsed numbers. +Can be any CSI escape, such as I<90> for default dark grey, +or alternatively I<1;30> for bright black. + +In case of additional colors, +the last is used for values equal to the maximum, the first for minima. +If unspecified, these are green and red respectively (I<31 90 32>). +Multiple intermediate colors will be distributed +relative to the size of values. + +Predefined color schemes are named I and I, +or I and I for 256-color variants. + +=item -_, --spark Replace lines by I, -single characters corresponding to input values. +single characters (configured by C<--indicators>) +corresponding to input values. + +=item --indicators[=] + +Prefix a unicode character corresponding to each value. +The first specified character will be used for non-values, +the remaining sequence will be distributed over the range of values. +Unspecified, block fill glyphs U+2581-2588 will be used. =item -s, --stat @@ -377,7 +603,9 @@ Reserved space for numbers. =item -w, --width= Override the maximum number of columns to use. -Appended graphics will extend to fill up the entire screen. +Appended graphics will extend to fill up the entire screen, +otherwise determined by the environment variable I +or by running the C command. =item -h, --usage @@ -385,10 +613,10 @@ Overview of available options. =item --help -Full documentation -rendered by perldoc. +Full pod documentation +as rendered by perldoc. -=item --version +=item -V, --version Version information. @@ -404,9 +632,23 @@ Compare file sizes (with human-readable numbers): du -d0 -b * | barcat -H +Same from formatted results, selecting the first numeric value: + + tree -s --noreport | barcat -H -f+ + +Compare media metadata, like image size or play time: + + exiftool -T -p '$megapixels ($imagesize) $filename' * | barcat + + exiftool -T -p '$duration# $avgbitrate# $filename' * | barcat --sexagesimal + + find -type f -print0 | xargs -0 -L1 \ + ffprobe -show_format -of json -v error | + jq -r '.format|.duration+" "+.bit_rate+" "+.filename' | barcat --sex + Memory usage of user processes with long names truncated: - ps xo %mem,pid,cmd | barcat -l40 + ps xo rss,pid,cmd | barcat -l40 Monitor network latency from prefixed results: @@ -414,7 +656,7 @@ Monitor network latency from prefixed results: Commonly used after counting, for example users on the current server: - users | sed 's/ /\n/g' | sort | uniq -c | barcat + users | tr ' ' '\n' | sort | uniq -c | barcat Letter frequencies in text files: @@ -424,43 +666,55 @@ Letter frequencies in text files: Number of HTTP requests per day: - cat log/access.log | cut -d\ -f4 | cut -d: -f1 | uniq -c | barcat + cat httpd/access.log | cut -d\ -f4 | cut -d: -f1 | uniq -c | barcat -Any kind of database query with counts, preserving returned alignment: +Any kind of database query results, preserving returned alignment: - echo 'SELECT count(*),schemaname FROM pg_tables GROUP BY 2' | + echo 'SELECT sin(value * .1) FROM generate_series(0, 30) value' | psql -t | barcat -u +In PostgreSQL from within the client; a fancy C<\dt+> perhaps: + + > SELECT schemaname, relname, pg_total_relation_size(relid) + FROM pg_statio_user_tables ORDER BY idx_blks_hit + \g |barcat -uHf+ + +Same thing in SQLite (requires the sqlite3 client): + + > .once |barcat -Hf+ + > SELECT name, sum(pgsize) FROM dbstat GROUP BY 1; + Earthquakes worldwide magnitude 1+ in the last 24 hours: - https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/1.0_day.csv | - column -tns, | graph -f4 -u -l80% + curl https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/1.0_day.csv | + column -ts, -n | barcat -f4 -u -l80% External datasets, like movies per year: - curl https://github.com/prust/wikipedia-movie-data/raw/master/movies.json | - perl -054 -nlE 'say if s/^"year"://' | uniq -c | barcat - -But please get I to process JSON -and replace the manual selection by C<< jq '.[].year' >>. + curl https://github.com/prust/wikipedia-movie-data/raw/master/movies.json -L | + jq .[].year | uniq -c | barcat Pokémon height comparison: - curl https://github.com/Biuni/PokemonGO-Pokedex/raw/master/pokedex.json | + curl https://github.com/Biuni/PokemonGO-Pokedex/raw/master/pokedex.json -L | jq -r '.pokemon[] | [.height,.num,.name] | join(" ")' | barcat USD/EUR exchange rate from CSV provided by the ECB: curl https://sdw.ecb.europa.eu/export.do \ -Gd 'node=SEARCHRESULTS&q=EXR.D.USD.EUR.SP00.A&exportType=csv' | - grep '^[12]' | barcat -f',\K' --value-length=7 + barcat -f',\K' --value-length=7 -Total population history from the World Bank dataset (XML): -External datasets, like total population in XML from the World Bank: +Total population history in XML from the World Bank: curl http://api.worldbank.org/v2/country/1W/indicator/SP.POP.TOTL | - xmllint --xpath '//*[local-name()="date" or local-name()="value"]' - | - sed -r 's,,\n,g; s,(<[^>]+>)+, ,g' | barcat -f1 -H + xmlstarlet sel -t -m '*/*' -v wb:date -o ' ' -v wb:value -n | + barcat -f1 -H + +Population and other information for all countries: + + curl http://download.geonames.org/export/dump/countryInfo.txt | + grep -v '^#\s' | column -ts$'\t' -n | barcat -f+2 -e -u -l150 -s And of course various Git statistics, such commit count by year: @@ -470,11 +724,19 @@ Or the top 3 most frequent authors with statistics over all: git shortlog -sn | barcat -L3 -s -Activity of the last days (substitute date C<-v-{}d> on BSD): +Activity graph of the last days (substitute date C<-v-{}d> on BSD): ( git log --pretty=%ci --since=30day | cut -b-10 seq 0 30 | xargs -i date +%F -d-{}day ) | - sort | uniq -c | awk '$1--' | graph --spark + sort | uniq -c | awk '$1--' | barcat --spark + +Sparkline graphics of simple input given as inline parameters: + + barcat -_ 3 1 4 1 5 0 9 2 4 + +Misusing the spark functionality to draw a lolcat line: + + seq $(tput cols) | barcat --spark --indicator=- --palette=rainbow =head1 AUTHOR