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Top Forums Programming Read arguments from a config file in C Post 302442145 by semash! on Tuesday 3rd of August 2010 11:00:57 AM
Old 08-03-2010
Read arguments from a config file in C

Hello everybody,
I'm coding a program in C and i'm getting troubles with this.

I need to read a config file and store the arguments into individual variables, let's say the config file looks like the following:
Code:
#This is the configuration file...
192.168.0.1      A1:B1:C1:D1:E1:F1
192.168.0.2      A2:B2:C2:D2:E2:F2
192.168.0.3      A3:B3:C3:D3:E3:F3
#End of Configuration file.

So, what i need is to read the first line, and store the first IP address ("192.168.0.1") into a variable, and "A1:B1:C1Smilie1:E1:F1" into another, use the stored data, and then, read the next line and do the same.

Also, i have to skip the lines starting with "#" to allow comments on the config file.

Any help will be appreciated,
Thanks.
 

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ROUTE.CONF(5)						      BSD File Formats Manual						     ROUTE.CONF(5)

NAME
route.conf -- static routes config file DESCRIPTION
The route.conf file is read by the staticroute rc.d script during system start-up and shutdown, and is intended for adding and removing static routes. FILE FORMAT Lines starting with a hash ('#') are comments and ignored. Lines starting with a plus sign ('+') are run during start-up, while lines start- ing with a minus sign ('-') are run during system shutdown. If a line starts with a '!', the rest of the line will get evaluated as a shell script fragment. All other lines are passed to route(8). During start-up, they are passed behind a ``route add -'' command and during shut- down behind a ``route delete -'' command. FILES
/etc/route.conf The route.conf file resides in /etc. /etc/rc.d/staticroute rc.d(8) script that parses route.conf. EXAMPLES
In this example, the interface for the desired routing changes is set, the IP address on that interface is determined, and a route is added during startup, or deleted during system shutdown. # Set interface and determine current IP address for added route. !ifname=bnx0 !ipaddr=$(/sbin/ifconfig ${ifname} | awk '$1 == "inet" {print $2}') net 10.10.1 -interface ${ipaddr} In this example, IP forwarding is turned on during start-up, and a static route added for 192.168.2.0. During system shutdown, the route is removed and IP forwarding turned off. # Turn on/off IP forwarding. +sysctl -w net.inet.ip.forwarding=1 -sysctl -w net.inet.ip.forwarding=0 net 192.168.2.0 -netmask 255.255.255.0 192.168.150.2 SEE ALSO
rc.conf(5), rc(8), route(8) BSD
May 1, 2012 BSD
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