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# 1  
Old 11-23-2011
Java New to Shell Scripting
Hi,
I've started to learn shell scripting, I need to check what is happening in the get opts loop i'm using in my scripts and I've no idea where it is going wrong. I don't think so "apeShell" is been supported in Shell scripting, can any one help me out to execute my script line by line??

Thanks
Shiva
# 2  
Old 11-23-2011
Quote:
Originally Posted by shivashankar_S
Hi,
I've started to learn shell scripting, I need to check what is happening in the get opts loop i'm using in my scripts and I've no idea where it is going wrong. I don't think so "apeShell" is been supported in Shell scripting, can any one help me out to execute my script line by line??

Thanks
Shiva
what is your code?
maybe you can execute with -x parameter for debugging
Code:
bash -x yourscript.sh

you can look from this url for learning more/
http://tldp.org/LDP/Bash-Beginners-Guide/html/
# 3  
Old 11-23-2011
Thanks for ur quick response,

my code has some parameters to be grepped and with the grepped values i should create a destination to source a txt file.

if [ $# -lt 10 ]; what does this $# mean, i cant understand this if loop;

else part has get opts, which is clear for me...

Thanks
shiva
Moderator's Comments:
Mod Comment Please use code tags!
Last edited by shivashankar_S; 11-24-2011 at 03:14 AM..
# 4  
Old 11-23-2011
It's not a loop, it runs once.

$# is the number of arguments. So if the number of arguments is less than ten, print a load of error messages.
# 5  
Old 11-23-2011
Quote:
Originally Posted by shivashankar_S
Thanks for ur quick response,

my code has some parameters to be grepped and with the grepped values i should create a destination to source a txt file.

if [ $# -lt 10 ]; what does this $# mean, i cant understand this if loop;

My code says
Code:
if [ $# -lt 10 ];then  
echo "syntax: -G <gender> -a <age> -S <state> -R <religion> -V <verified>"
echo "   gender : male|female"
echo "   age     : <20|>30"
echo "   state      : TN|KER|AP|KAR"
echo "   release    : HIN|CHR|MUS"
echo "   verified    : Yes|NO"
echo "Error: Number of arguments are wrong"

else part has get opts, which is clear for me...

Thanks
shiva
Moderator's Comments:
Mod Comment Please use code tags!
this means if you script get lower than 10 parameter then script echoes these
Code:
# ./script 1 2 3 4 5 6 # in this state , parameter count is 6 then return error messages..

Code:
# ./script 1 2 3 4 5 6
syntax: -G <gender> -a <age> -S <state> -R <religion> -V <verified>
   gender : male|female
   age     : <20|>30
   state      : TN|KER|AP|KAR
   release    : HIN|CHR|MUS
   verified    : Yes|NO
Error: Number of arguments are wrong

Code:
# ./script 1 2 3 4 5 6 7 8 9 10  # in this state , parameter count is 10 then no any error message

This User Gave Thanks to ygemici For This Post:
shivashankar_S
# 6  
Old 11-23-2011
thing i learned with scripting is that you can execute commands at prompt.
try to breakdown your code piece by piece and you'll see your output.
then change the syntax as desired.

if its too tiresome, use the "bash -x <script>" to help you debug.

goodluck!
This User Gave Thanks to kaboink For This Post:
shivashankar_S
# 7  
Old 11-24-2011
Thank you very much, it working for me after changing the parameters value..
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