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Doubt in For loop

 
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# 1  
Old 01-28-2014
Blade Doubt in For loop
Hi All,

I wrote a for loop where i am trying to delete the 1st line of each file and append then into a single file, my code looks like this but i am not sure if its right or worng . Can any one correct me if i am worng.

Code:
FILES=path/to/files/date_*.csv
for f in $FILES
do
   sed '1d' >> merge.csv
   done

# 2  
Old 01-28-2014
Pass filename as input to sed:
Code:
for f in path/to/files/date_*.csv
do
        sed '1d' "$f"
done > merge.csv

This User Gave Thanks to Yoda For This Post:
vikatakavi
# 3  
Old 01-28-2014
Hi Yoda,

Thanks for the quick reply ,in the last step after done do This > append or overwrite the file (as far as my little knowledge in unix to append >> is used right) correct me if i am wrong.
# 4  
Old 01-28-2014
It overwrites the file. But you get the output of the entire loop in the file -- it gets opened once and written to lots of times.
This User Gave Thanks to Corona688 For This Post:
vikatakavi
# 5  
Old 01-28-2014
Hello,

Here is an example for same.

Code:
for i in /home/Singhs1/singh_testing1211/reset_data_check1211
do
sed '1d' "$i" > OUTPUT
done


output will be in OUTPUT file.


Thanks,
R. Singh
# 6  
Old 01-28-2014
Thank you yoda and corona688
# 7  
Old 01-28-2014
Quote:
Originally Posted by RavinderSingh13
Hello,

...
Code:
for i in /home/Singhs1/singh_testing1211/reset_data_check1211
do
sed '1d' "$i" > OUTPUT
done

output will be in OUTPUT file.
...
I am afraid in this variation you have to use
Code:
>>

, as each invocation of sed process will overwrite the OUTPUT file and you will have results from the last file.
 
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