Run md5sum shell command and save the output in C

Question

I'm trying to run a md5sum command and save the output in C, what is the most efficient way to do it?

It is a good habit to search stack overflow before you post something here. Not voting down though because it is your #SOFirstTime — sjsam, Dec 12 '15 at 18:17

score 1 · Answer 1 · edited May 23 '17 at 11:59

1

S.Iquebal deleted answer is giving the right way. Use some library functions to compute the md5sum (without running any command) - see md5 openssl functions, since running a command has some overhead.

If you insist on running a command, run it with popen(3) or do the equivalent pipe + fork + execve syscalls(2)

edited May 23 '17 at 11:59

Community

1
1

answered Dec 12 '15 at 21:14

Basile Starynkevitch

223,805
18
296
547

Run md5sum shell command and save the output in C

1 Answers1