How to overwrite the data in a file with bash
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by Stefan Liebenberg
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Published on 2010-04-15T09:45:26Z
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2010/04/15
10:03 UTC
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I'm writing a bash script that encrypts the data of a folder or file
#!/bin/bash
file_name=$1
tmp_file=/tmp/tmpfile.tar
# tar compress file
tar -cf $tmp_file $file_name;
# encrypt file
gpg -c $tmp_file
# remove temp file
rm -rf $tmp_file $file_name
# mv encrypted file to orignal place
mv ${tmp_file}.gpg $file_name
but the data will still be recoverable by using photorec or similar methods...
Is there a way to ensure the absolute deletion of the original file in bash?
Thank You
Stefan
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