pipe html to a browser

browser

#!/bin/sh -e
#
# Usage: browser
#        pipe html to a browser
# e.g.
#  $ echo '<h1>hi mom!</h1>' | browser
#  $ ron -5 man/rip.5.ron | browser   

if [ -t 0 ]; then
  if [ -n "$1" ]; then
    open $1
  else
    cat <<usage
Usage: browser
       pipe html to a browser

$ echo '<h1>hi mom!</h1>' | browser
$ ron -5 man/rip.5.ron | browser
usage
fi
else
  f="/tmp/browser.$RANDOM.html"
  cat /dev/stdin > $f
  open $f
fi

or with zsh, it is
open =(echo '<h1>zsh rulez!</h1>')

=(foo) takes the output of foo, writes it into a file in /tmp and returns the files path.

In bash you can do <(foo) to achieve the same as zsh's =(foo). But it doesn't work with the open(1) utility for me. How should it figure out the file type anyway?

Zeokat usefull piece of code.

Try

:; I="$(basename $0)"; [ -z $BROWSER ] && open=open || open=$BROWSER

[ $# -eq 0 ] && set -- -; [ "$1" = "-" ] && [ -t 0 ] &&
  echo "Usage: [ COMMAND | $I ] | [ $I < FILE ] | [ $I FILE ... ]" >&2 && exit

for what; do where="/tmp/$(od -N2 < /dev/urandom | openssl dgst -sha1).html"
  cat "$what" > "$where" && $open "$where"; sleep 1 && rm -f "$where" & done

Some advantages:

• Respect $BROWSER. Can be BROWSER=lynx, BROWSER='open -a Firefox', etc.
• No bashisms ($RANDOM) or zsh-isms (=(...)).
• Correctly handles arguments that do not end in .html.
• Correctly handles multiple arguments and shell globs.
• Cleans up after itself.
• Doesn't even need a shebang!

Or, you might prefer what I use: avoid leaving your terminal at all, and:

cat "$what" > "$where" && qlmanage -p "$where" >/dev/null 2>&1; sleep 1 ...

To show Markdown files in browsers, I found a way without temporary files: https://gist.github.com/Boldewyn/4311962

It uses data: URIs for fun and profit:

x-www-browser $(base64 -w0 | cat <(echo -n 'data:text/html;base64,') -)
#  ^--- Debian link to default browser
#               ^---- base64 slurps stdin as default
#                            ^--- concat the "data:" header, then the content

It's still working after ~10 years. 😊 Thanks!

Installed with brew install browser 👉 Tested on MacOS Mojave 10.14.6 👍

Works perfectly! Thanks Chris. Oh.. and thanks for making Github! 🙂

Small heads up for an improvement: open can be replaced by xdg-open to make this work on Linux. Maybe the script could detect if it is used on Mac/Linux and use the correct command based on that.

Small heads up for an improvement: open can be replaced by xdg-open to make this work on Linux. Maybe the script could detect if it is used on Mac/Linux and use the correct command based on that.

Here's @geoff-nixon's version as a standalone Bash script, with support already baked in for Quick Look or some other previewer. Requires bash to be somewhere in the search path if you're on Mac; should mostly work on Linux, too.

Note this was removed from Homebrew in January.