ssum

If you're on the lookout for a free, open-source command line utility to help you generate md5 sums for each segment of a file while also examining it for any bad segments, then ssum is an excellent choice. It comes packed with features, such as the ability to make a rip file that can extract segments of data from valid copies of files and combine them into a single data file. The rip function reads these data files and produces an inject file that can transfer back the data to the location with corrupt files to inject them.

For instance, suppose you want to generate a list of sums for two files, test.bin and test2.bin. In that case, you can easily do it with ssum by typing this command, "ssum -o sums test.bin test2.bin." You can then check them against another copy by typing "ssum -c sums." If there are any segments that don't match, you can utilize the tool to create a rip file using the "-g" option by typing "ssum -c sums -g."

The tool also allows you to extract the necessary data from the good files using the rip file. For this, you can type "ssum -r sums.rip." Additionally, you can use the inject file created by the rip to fix the corruption in the files by typing "ssum -i sums.inj." However, to use the application correctly, you have to compile it by editing the ssum.c file. Open the file and search for "#include," and replace it with "#include".