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foreach loop in unix script

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# 1  
Old 03-04-2012
foreach loop in unix script
Hi all,

I have a script which searches for all sql files in the current directory and replaces all sql files with an underscore with a dash. The next part I need to do is record the number of changes made (underscore to dash) and display this value (e.g.2). This is what I have so far;
Code:
find / -name "*.sql" | sed -e  's/_/-/g'

foreach f ('*-.sql')
    set n = 0
    n = `expr $n + 1`
    echo "Number of conversions is $n"
end

Now this returns '0'. I need it to increment the value of n depending on the number of conversions. Any ideas?

Thanks
Last edited by Franklin52; 03-05-2012 at 03:16 AM.. Reason: Please use code tags for code and data samples, thank you
# 2  
Old 03-04-2012
Hello friend ,
You need to modify your looping part as below

Code:
for i in $(ls *-.sql)
do
        ((n++))
done
echo "Number of conversions is $n"

This User Gave Thanks to codemaniac For This Post:
shawi
# 3  
Old 03-04-2012
Thank you for the quick reply, appreciated.

I get a 'Badly placed ()'s.' error when running the code above. Can I ask why it is 'n++' as opposed to 'n = n +1'?
# 4  
Old 03-04-2012
Theoritically
Code:
n=`expr $n + 1`
((n++))
let "n=n+1"

all are same .

Couple of things you need to check .
Are you using bash as your shell while running the script .Because some of the above mentioned syntaxes are native to bash only .
If you are using some older shells you may try using something like below .

Code:
for i in `ls *-.sql`
do
        n=`expr $n + 1`
done
echo "Number of conversions is $n"

Last edited by codemaniac; 03-04-2012 at 08:43 AM.. Reason: removing additional spaces
# 5  
Old 03-04-2012
This is running with csh, should have mentioned that before:$

I've also tried to set n to 0 followed by @n = n + 1, but this doesn't work either
# 6  
Old 03-04-2012
can you add an #!/bin/bash at the very beginning of your shell script and run .
That would run the code in bash only .
# 7  
Old 03-04-2012
Changed to bash, same Badly placed ()'s error appears

This is the code running;
Code:
#!/usr/bin/bash

echo WARNING : THIS DATA HAS BEEN SQLED

#finds all sql files in the home directory and replace sql files containing an underscore with a dash

find / -name "*.sql" | sed -e  's/_/-/g'

#records the number of changes made and outputs them to the user

for i in $ (ls *-.sql)
do
        set n = 0
        n++
done
    echo "Number of conversions is $n"

Last edited by Franklin52; 03-05-2012 at 03:16 AM.. Reason: Please use code tags for code and data samples, thank you
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