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---
created_at: '2013-08-16T04:46:04.000Z'
title: Webserver in bash (2007)
url: http://paulbuchheit.blogspot.ca/2007/04/webserver-in-bash.html
author: soundsop
points: 53
story_text: ''
comment_text:
num_comments: 14
story_id:
story_title:
story_url:
parent_id:
created_at_i: 1376628364
_tags:
- story
- author_soundsop
- story_6222215
objectID: '6222215'
year: 2007
---
[Source](http://paulbuchheit.blogspot.ca/2007/04/webserver-in-bash.html "Permalink to Paul Buchheit: Webserver in bash")
# Paul Buchheit: Webserver in bash
# [ Paul Buchheit ][1]
## Friday, April 13, 2007
### Webserver in bash
And not using perl or any of that fancy stuff. It's the inane things that keep me awake at night.
Getting nc to behave turned out to be the most difficult part. It won't exit until both ends of the connection are closed. Correction, making blogger not mangle this code was the most difficult part.
#!/bin/bash
# web.sh -- <http://localhost:9000/hello?world>
RESP=/tmp/webresp
[ -p $RESP ] || mkfifo $RESP
while true ; do
( cat $RESP ) | nc -l -p 9000 | (
REQ=`while read L && [ " " "<" "$L" ] ; do echo "$L" ; done`
echo "[`date '+%Y-%m-%d %H:%M:%S'`] $REQ" | head -1
cat >$RESP <<EOF
HTTP/1.0 200 OK
Cache-Control: private
Content-Type: text/plain
Server: bash/2.0
Connection: Close
Content-Length: ${#REQ}
$REQ
EOF
)
done
Update: Fixed script so that it also work in Linux, where tr lacks the -u option.
Posted by Paul Buchheit at [5:53 PM][2] [ ![][3] ][4]
#### 6 comments:
![][5][ ][6]
[abbot][6] said...
:
It should be like this to behave with both gnu and bsd utils:
( cat $RESP ) | nc -l 9000 | sed -ue 's/r//g' | (
: [ 2:29 PM ][7] [ ![][8] ][9]
![][10][ ][11]
[Paul Buchheit][11] said...
:
Thanks abbot, but OSX sed doesn't support -u. I found a way to get rid of tr instead.
: [ 3:53 PM ][12] [ ![][8] ][13]
![][14][ ][15]
[brett][15] said...
:
well that wasted a bit of my day.
how about a version that takes a document root and serves html files:
#!/bin/bash
# pass in document root as first arg
# web.sh ~/Sites/test
DOC_ROOT=$1
RESP=/tmp/webresp
[ -p $RESP ] || mkfifo $RESP
while true ; do
( cat $RESP ) | nc -l -p 9000 | tr -ud 'r' | (
REQ=`while read L && [ -n "$L" ] ; do echo "$L" ; done`
SERV_PATH=`echo "$REQ" | head -1 | cut -f2 -d" " `
FULL_PATH="$DOC_ROOT$SERV_PATH"
echo $FULL_PATH
if [ -f "$FULL_PATH" ]; then
RESP_BODY=`cat $FULL_PATH`
RESP_CODE="200 OK"
else
RESP_BODY="not found<br/><br/>$REQ"
RESP_CODE="404 NOT FOUND"
fi
echo "[`date '+%Y-%m-%d %H:%M:%S'`] $REQ" | head -1
cat >$RESP <<EOF
HTTP/1.0 $RESP_CODE
Cache-Control: private
Content-Type: text/html
Server: bash/2.0
Connection: Close
Content-Length: ${#RESP_BODY}
$RESP_BODY
EOF
)
done
: [ 11:00 PM ][16] [ ![][8] ][17]
![][18][ ][19]
[andreas][19] said...
:
Another web server written in bash: http://sourceforge.net/projects/mws/
: [ 6:23 AM ][20] [ ![][8] ][21]
![][22][ ][23]
[Bill Blum][23] said...
:
This both intrigues me and scares me...
: [ 7:34 AM ][24] [ ![][8] ][25]
![][26][ ][27]
[ralph][27] said...
:
Does the HTTP spec. say the time must be GMT rather than your local timezone, e.g. "TZ=GMT date ...".
Cheers, Ralph Corderoy.
: [ 9:46 AM ][28] [ ![][8] ][29]
[Post a Comment][30]
[Newer Post][31] [Older Post][32] [Home][1]
Subscribe to: [Post Comments (Atom)][33]
## About Me
[ Paul Buchheit ][11]
: <http://en.wikipedia.org/wiki/Paul_Buchheit> <https://twitter.com/paultoo>
[View my complete profile][11]
[ ![][34] ][35]
## Blog Archive
* [ ►  ][36] [ 2014 ][37] (2)
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* [ ►  ][36] [ February ][64] (2)
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* [ ▼  ][36] [ 2007 ][66] (49)
* [ ►  ][36] [ December ][67] (4)
* [ ►  ][36] [ November ][68] (2)
* [ ►  ][36] [ October ][69] (1)
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* [ ►  ][36] [ June ][72] (15)
* [ ►  ][36] [ May ][73] (4)
* [ ▼  ][36] [ April ][74] (10)
* [And you thought all the good domain names were tak...][75]
* [Whose reality are you living in? Whose reality wou...][76]
* [The secret to making things easy: avoid hard probl...][77]
* [The problem with conventional databases][78]
* [What if I could not only change the way things are...][79]
* [And there it is. Microsoft complains about Google ...][80]
* [1 - 2 + 3 - 4 + 5 - 6 + ... made easy][81]
* [Google buys DoubleClick, for a double-dose of the ...][82]
* "[Perfect" is the enemy of "good enough", and][83]
* [Webserver in bash][84]
* [ ►  ][36] [ March ][85] (8)
[ ![][34] ][86]
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[ ![][34] ][88]
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[40]: http://paulbuchheit.blogspot.ca/2012/
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[45]: http://paulbuchheit.blogspot.ca/2011/02/
[46]: http://paulbuchheit.blogspot.ca/2011/01/
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[53]: http://paulbuchheit.blogspot.ca/2009/
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[55]: http://paulbuchheit.blogspot.ca/2009/11/
[56]: http://paulbuchheit.blogspot.ca/2009/10/
[57]: http://paulbuchheit.blogspot.ca/2009/09/
[58]: http://paulbuchheit.blogspot.ca/2009/04/
[59]: http://paulbuchheit.blogspot.ca/2009/01/
[60]: http://paulbuchheit.blogspot.ca/2008/
[61]: http://paulbuchheit.blogspot.ca/2008/12/
[62]: http://paulbuchheit.blogspot.ca/2008/04/
[63]: http://paulbuchheit.blogspot.ca/2008/03/
[64]: http://paulbuchheit.blogspot.ca/2008/02/
[65]: http://paulbuchheit.blogspot.ca/2008/01/
[66]: http://paulbuchheit.blogspot.ca/2007/
[67]: http://paulbuchheit.blogspot.ca/2007/12/
[68]: http://paulbuchheit.blogspot.ca/2007/11/
[69]: http://paulbuchheit.blogspot.ca/2007/10/
[70]: http://paulbuchheit.blogspot.ca/2007/09/
[71]: http://paulbuchheit.blogspot.ca/2007/08/
[72]: http://paulbuchheit.blogspot.ca/2007/06/
[73]: http://paulbuchheit.blogspot.ca/2007/05/
[74]: http://paulbuchheit.blogspot.ca/2007/04/
[75]: http://paulbuchheit.blogspot.ca/2007/04/and-you-thought-all-good-domain-names.html
[76]: http://paulbuchheit.blogspot.ca/2007/04/whose-reality-are-you-living-in-whose.html
[77]: http://paulbuchheit.blogspot.ca/2007/04/secret-to-making-things-easy-avoid-hard.html
[78]: http://paulbuchheit.blogspot.ca/2007/04/problem-with-conventional-databases.html
[79]: http://paulbuchheit.blogspot.ca/2007/04/what-if-i-could-not-only-change-way.html
[80]: http://paulbuchheit.blogspot.ca/2007/04/and-there-it-is-microsoft-complains.html
[81]: http://paulbuchheit.blogspot.ca/2007/04/1-2-3-4-5-6-made-easy.html
[82]: http://paulbuchheit.blogspot.ca/2007/04/google-buys-doubleclick-for-double-dose.html
[83]: http://paulbuchheit.blogspot.ca/2007/04/perfect-is-enemy-of-good-enough-and.html
[84]: http://paulbuchheit.blogspot.ca/2007/04/webserver-in-bash.html
[85]: http://paulbuchheit.blogspot.ca/2007/03/
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[*[5:53 PM]: 2007-04-13T17:53:00-07:00
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