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Need help in copying the file once

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Top Forums Shell Programming and Scripting Need help in copying the file once
# 1  
Old 08-26-2014
Need help in copying the file once
hi all ,
i had a following problem in my script
Code:
filename=oas/data/output.txt
printf"content1" >> $filename
printf"content2" >> $filename
printf"content3" >> $filename
printf"content4" >> $filename
printf"content5" >> $filename
printf"content6" >> $filename

my contents are different like based on condition iam adding them to file .. i had a problem like if i am running the script for first time iam getting correct output,but if iam running script for second time it getting append the same for the existing file like its appearing twice... if i use > instead of >> operand then iam getting the output as content6 wat should i do please guide me

thanks in advance
hemanthsaikumar.
# 2  
Old 08-26-2014
At the start of the script, clear/remove the file before appending to it. Or, make all the printf one compound command (using e.g. {...; }) and redirect that output using >.
# 3  
Old 08-26-2014
You can do someting like this :
Code:
filename=oas/data/output.txt
{
  printf "%s\n" "content1"
  printf "%s\n" "content2"
  printf "%s\n" "content3"
  printf "%s\n" "content4"
  printf "%s\n" "content5"
  printf "%s\n" "content6"
} >"$filename"

or

Code:
printf "%s\n" "content1" "content2" "content3" "content4" "content5" "content6" >"$filename"

or

Code:
cat << "EOF" > "$filename"
content1
content2
content3
content4
content5
content6
EOF

Last edited by Scrutinizer; 08-26-2014 at 07:24 AM..
# 4  
Old 08-26-2014
try
Code:
filename=oas/data/output.txt
rm $filename
printf"content1" >> $filename
printf"content2" >> $filename
printf"content3" >> $filename
printf"content4" >> $filename
printf"content5" >> $filename
printf"content6" >> $filename

# 5  
Old 08-26-2014
Or:
Code:
filename=oas/data/output.txt
printf"content1" > $filename
printf"content2" >> $filename
printf"content3" >> $filename
printf"content4" >> $filename
printf"content5" >> $filename
printf"content6" >> $filename

# 6  
Old 08-26-2014
hi all,
thanks for the reply go it made the following change
Code:
printf"content1" > $filename
printf"content2" >> $filename
printf"content3" >> $filename
printf"content4" >> $filename
printf"content5" >> $filename
printf"content6" >> $filename

just replaced the first operand its working

i had one more query like
Code:
a=qw
b=rter
c=fdfd
curency=1000
printf"${curency} $a $b $c" > filename

can i have printf statement that can change the currency from 1000 to 1,000 like it should convert the number to currency format ..?
# 7  
Old 08-26-2014
@hemanthsaikumar. Please open a new thread for a new question..
This User Gave Thanks to Scrutinizer For This Post:
hemanthsaikumar
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