BASH Shell program Read a configuration File

minil · 01-12-2005, 06:16 AM

hi
what is the Shell program to read the configuration file given below

-----------------------------------------------------------

#C program Directory
c_dir "/home/minil/"

#server ip address
server_ip 192.168.48.100

#user login name
logname "minil"

-------------------------------------------------------------
i need to output only as follows

"/home/minil"
192.168.48.100
"minil"

Thanks in Advance

pycoucou · 01-12-2005, 07:33 AM

Hmm... I think you should be interested by the command 'source'

If you type:
source config_file
then the variable would be set properly within the bash.

Nevertheless the appropriate syntax would be (Cf. bashrc or bash_profile):
C_DIR=/home/minil

And you could use it under bash with $C_DIR

For instance, to compile the file prog.c in this directory:
g++ $C_DIR/prog.c

Hoping it would give you clues to solve your problem.

Cheers, PY

minil · 01-12-2005, 08:02 AM

It shows me error

[root@laxman Backup]# source vs.conf
bash: c_dir command not found
bash: server_ip: command not found
bash: logname : command not found

pycoucou · 01-12-2005, 09:15 AM

Hmm... Reread my message, there is a clue !

bigearsbilly · 01-12-2005, 09:45 AM

summink like this....

Code:

billym.primadtpdev>cat ~/2
#C program Directory
c_dir "/home/minil/"

#server ip address
server_ip 192.168.48.100

#user login name
logname "minil"

Code:

billym.primadtpdev>cat ~/1

grep '^[^#].*' |
while read one two;do
    echo $two
done

Code:

billym.primadtpdev>bash ~/1 < ~/2
"/home/minil/"
192.168.48.100
"minil"

chrism01 · 01-12-2005, 05:24 PM

To parse fields separated by whitespace, i'd use awk, but ala pycoucou, I'd recommend instead separating by '=' in a cfg file.
If it's good enough for .bashrc/.bash_profile, it's good enough for me

bigearsbilly · 01-13-2005, 07:39 AM

Quote:

To parse fields separated by whitespace, i'd use awk, but ala pycoucou, I'd recommend instead separating by '=' in a cfg file.
If it's good enough for .bashrc/.bash_profile, it's good enough for me

naaah! You can do it like this...

Code:

billym.primadtpdev>cat ~/2
STARTER  soup 
DINNER  fish and chips
PUDDING   lemon cheesecake

Code:

billym.primadtpdev>cat ~/1
while read var param;do
    eval $var=\\'$param\\'
done
echo $STARTER, then $DINNER followed by $PUDDING

Code:


billym.primadtpdev>bash ~/1 < ~/2
soup, then fish and chips followed by lemon cheesecake

delicious!

minil · 01-16-2005, 11:43 PM

can u explain me the following line
grep '^[^#].*'

minil · 01-16-2005, 11:55 PM

Another solution
------------------------
/home/minil/ cat ~/temp.conf

#C program Directory
c_dir="/home/minil/"

#server ip address
server_ip= 92.168.48.100

#user login name
logname="minil"

--------------------------

code
-------------------------------------------------------
/home/minil/ cat ~/1.sh
#!/bin/sh

. ./temp.conf # To import temp.conf into our file
echo $c_dir
echo $server_ip
echo $logname

--------------------

code 3
------------------------------------------------
/home/minil/ sh 1.sh

"/home/minil"
192.168.48.100
"minil"
----------------------------------------------

bigearsbilly · 01-17-2005, 04:16 AM

of course minil, even better! [removing hat]

Quote:

can u explain me the following line
grep '^[^#].*'

clunky way of excluding comments assuming the start in column 1.
in english:
grep only lines that don't start with a '#' .

bigearsbilly · 01-17-2005, 04:37 AM

do a 'man regexp'

^ means start of line
[^xyz] means a character but not 'x' 'y' 'z'