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I've just taken over webmastery for my company's site, and I'm preparing a report for my partner about the LAMP stack. But I'm a new CS graduate, and the only thing I know really well is Java coding, so I need some help!

I'm trying to find out a) if Apache is installed and b) what version is running.

My Linux version is "Ubuntu 8.04.4 LTS \n \l", as reported by /etc/issue.

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5 Answers

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Is it running?

pgrep apache

Any output is good, nothing means it isn't running.

What version:

aptitude show apache2
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pgrep apache produces 11 lines of output. – isme Sep 3 '10 at 22:18
aptitude show apache2 produces lots of output, including the line Version: 2.2.8-1ubuntu0.15. – isme Sep 3 '10 at 22:20
Thank you, this seems to answer my question! – isme Sep 4 '10 at 2:14
apache2 -version in a shell would also work. – Marc B Sep 5 '10 at 6:24
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up vote 1 down vote

Have you tried talking to it?

telnet localhost 80
HEAD / HTTP/1.0
<extra carriage return>
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telnet localhost 80 produces -bash: telnet: command not found – isme Sep 3 '10 at 22:10
You should consider installing it or something with similar functionality such as ncat (part of nmap 5). Talking directly to your web (or SMTP or POP or IMAP or SIP or FTP or …) server can be indispensable for troubleshooting. – Gerald Combs Sep 7 '10 at 15:28
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up vote 1 down vote

To check for Apache 1.X see below, for Apache 2.X see wzzrd's answer.

The apache web server process is called httpd so a quick way to start with confirming apache is installed and running is:

ps -A | grep 'httpd'

ps -A lists all the running processes grep 'httpd' filters only lines containing 'httpd'

If you don't get any results, apache is not running.

regarding version, try:

apachectl status

in the output there should be a line like:
Apache/1.3.41 Server at www.xyz.com Port 80

If it cannot find apachectl, it may not be in your execution path, try:
whereis apachectl
to see where it is located

These are distribution agnostic ways so no matter how apache was installed on the system, you should find it with these.

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"ps -A | grep 'httpd'" produces no output. – isme Sep 3 '10 at 22:07
"apachectl status" produces "-bash: apachectl: command not found" – isme Sep 3 '10 at 22:08
"whereis apachectl" produces "apachectl:" – isme Sep 3 '10 at 22:09
However, ps -A | grep apache2 produces ` 2691 ? 00:00:01 apache2` and 10 other apache2 processes. – isme Sep 3 '10 at 22:14
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@isme, actually, that isn't a distribution issue but an apache major version issue. I was referencing a box with apache 1.x on it. The instructions would have worked on Ubuntu with apache 1.x and the other answer would have not produced a result. – ManiacZX Sep 6 '10 at 17:28
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up vote 0 down vote 
/sbin/service httpd status

Will say that you don't have it | it's OK | it's OFF

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/sbin/service httpd status produces -bash: /sbin/service: No such file or directory – isme Sep 3 '10 at 22:11
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up vote 0 down vote

Click here: http://localhost If you don't get an error 404, it's running.

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My server instance is a VPS, so I can't just click a link on my local machine to check whether it's running. – isme Sep 4 '10 at 2:12
You could run some ncurses web browser like links or lynx directly on the server. – halp Sep 4 '10 at 3:48
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