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passing argument in script?

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# 1  
Old 09-14-2012
passing argument in script?
hi,
I want to implement some function to perform following task
Code:
if [ firstArgument is not provided ]; then
$TEXT = "Data_0"
else
$TEXT = $1
fi

if [ secondArgument is not provided]; then
$Lines = 45
else 
$Lines = $2
fi

Kindly suggest,

thanks
Pooja
# 2  
Old 09-14-2012
$# return the number of argument.
This User Gave Thanks to delugeag For This Post:
nrjrasaxena
# 3  
Old 09-14-2012
Which shell are you using?

In sh, dash, should run on bash as well:
Code:
#!/bin/sh

if [ ! "$1" ]; then
TEXT="Data_0"
else
TEXT="$1"
fi

if [ ! "$2" ]; then
Lines=45
else 
Lines=$2
fi

Last edited by tukuyomi; 09-14-2012 at 05:18 PM.. Reason: No $ in front of variables names in assignments, no spaces between =
This User Gave Thanks to tukuyomi For This Post:
nrjrasaxena
# 4  
Old 09-14-2012
Quote:
Originally Posted by tukuyomi
Which shell are you using?

In sh, dash, should run on bash as well:
Code:
#!/bin/sh

if [ ! "$1" ]; then
TEXT = "Data_0"
else
TEXT = "$1"
fi

if [ ! "$2" ]; then
Lines = 45
else 
Lines = $2
fi

Perfect, thanks..Smilie

---------- Post updated at 03:15 PM ---------- Previous update was at 03:12 PM ----------

Quote:
Originally Posted by nrjrasaxena
Perfect, thanks..Smilie
ummm, confusion..SmilieSmilie
my firstargument is String and second argument is integer.

so what if I do following:
Code:
./script.sh text 
and 
./script.sh 10

I am just wondering, wont it take 10 as first argument???? in principle it should be my second argument..?? and vice versa..

Pooja
# 5  
Old 09-14-2012
try this..
Code:
./script.sh text 10

# 6  
Old 09-14-2012
Try as pamu says. To go further, you may need to quote your text if it contains spaces:
Code:
./script.sh 'text with spaces to be taken as first arg' integer_arg

Last edited by tukuyomi; 09-14-2012 at 05:26 PM.. Reason: Code tags, please
# 7  
Old 09-14-2012
Hi pamu,
Quote:
Originally Posted by pamu
try this..
Code:
./script.sh text 10


I am confuse as I want to use it both ways:
Code:
./script.sh 10

And here I want code to understand that it is secondArgument

and also like
Code:
 ./script.sh data_0

where code should know that its firstArgument.

I hope, I stated it clearly now?

Thnaks
Pooja
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