I am looking for a simple way to pipe the result of md5sum into another command. Something like this:$echo -n 'test' | md5sum | ...My problem is that md5sum outputs not only the hash of the string, but also an hypen, which indicates that the input came from stdin. I checked the man file and I didn't find any flags to control output.
How to pipe md5 hash result in shell
bash;ubuntu;shell script;hashsum
You can use the command cut; it allows you to cut a certain character/byte range from every input line. Since the MD5 hash has fixed length (32 characters), you can use the option -c 1-32 to keep only the first 32 characters from the input line:echo -n test | md5sum | cut -c 1-32Alternatively, you can tell cut to split the line at the every space and output only the first field: (note the quotes around the space character)echo -n test | md5sum | cut -d   -f 1See the cut manpage for more options.