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md5sum command

Upgrading lighttpd is a piece of cake. There are two methods:

a) Use yum or apt-get or FreeBSD ports / command to update binary lighttpd package

b) Just download latest lighttpd tar ball from official web site and install the same.

Let us see how to upgrade lighttpd using source code (tar ball).

# 1 : Download lighttpd

Use wget or lftp command line http / ftp accelerator tools:
$ cd /opt
$ wget http://www.lighttpd.net/download/lighttpd-1.4.17.tar.gz

# 2 : Verify lighttpd

Use sha1sum or md5sum hash to verify lighttpd tar ball integrity:
$ md5sum lighttpd-1.4.17.tar.gz

# 3: Configure lighttpd

Now configure and compile lighttpd web server:
$ ./configure
$ make

# 4: Stop lighttpd

First stop currently running lighttpd web server:
# /etc/init.d/lighttpd stop
Make sure you are in installation directory, use the following command to uninstall old version:
# make uninstall

# 5: Install lighttpd

Just enter the following command:
# make install
Start lighttpd:
# /etc/init.d/lighttpd start
Watch out for lighttpd log files for any problems:
# tail -f /var/log/messages
# tail -f /var/log/lighttpd/error.log
# tail -f /var/log/lighttpd/scripts.log
# tail -f /var/log/lighttpd/access.log

A note about binary package upgrade method

You can download rpm file or use yum / apt-get command:
apt-get update lighttpd
yum update lighttpd

md5sum command is use to check or print MD5 (128-bit) checksums. For example purpose download your favorite Linux distribution from Linux distribution web site / project site. Now you will need to to check md5sum on a Linux ISO file.

1) Download Debian linux # 1 ISO please note down md5sum listed next to each ISO file with the help of wget command:
$ wget http://someproject.org/path/to/isofile.iso

2) Verify integrity of a Linux iso:
$ md5sum isofile.iso
Output:

a0b162e26281ef097ee8b39b8690a8c2 isofile.iso

Compare output (a0b162e26281ef097ee8b39b8690a8c2) with key listed online at linuxiso.org's site.

You can read MD5 sums from the FILEs and check them:
$ md5sum -c xcache-1.2.2.tar.gz.md5.txt
Sample output:

xcache-1.2.2.tar.gz: OK

Online References: