- Cyclic-Redundancy-Check Verification when trying to existing extract files
Given dummy files
data*.txt
rm -f data-{2,3,4,5,6,7}.txt;
rm -f *.txt
cat >gendata.sh <<EOF
#!/bin/bash
for s in \$(seq 2 7); do
target="data-\${s}.txt"
echo -n > \$target
echo "\$(seq 10 | xargs | sed 's/[[:space:]]//g' | sed 's/[[:digit:]]/-/g')" >> \$target
echo "\$target" >> \$target
echo -e "\$(seq 10 | xargs | sed 's/[[:space:]]//g' | sed 's/[[:digit:]]/-/g')\n\n" >> \$target
seq \$((s * 7)) | sed "s,^,[\$(date +"%Y/%m/%d-%H:%M:%S")],g" >> \$target
echo "Generated dummy data in: \$target"
done
EOF
bash gendata.sh
s7zip -o archive.7z data*.txt
sunzip archive.7z
or
s7unzip archive.7z