write file


 
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# 1  
Old 03-30-2010
write file

Hi all,
I want to append some 20 statements into a file. I'm doing now in ksh script as,
echo “Statement1" >> filename
..........................................
.........................................
echo "statement20" >> filename

I guess that above code will open, write & close file for 20 times.

Pls suggest me to do it in single open, write & close? Correct me if I'm wrong here.

Regards,
Poova.
# 2  
Old 03-30-2010
use sed with a\ option
# 3  
Old 03-30-2010
IMHO the best way in this scenario is to add the commands with an editor (vi) in the file.

Regards
# 4  
Old 03-30-2010
with (very) little modification
Code:
{
    echo “Statement1"
    ..........................................
    .........................................
    echo "statement20"
} >>  filename

# 5  
Old 03-30-2010
Purists will use inward redirect rather than cat, but this is the usual method to create a file line-by-line in shell.

Code:
#!/bin/ksh
# Append lines to existing file called "filename"
cat <<EOF >>filename
statement1
statement2
statement3
statement4
statement5
EOF


Last edited by methyl; 03-30-2010 at 08:20 AM.. Reason: OP said append!
# 6  
Old 03-30-2010
Thanks all. Nice experience.
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