Generate MD5 Checksum On AIX
I have been looking for a command to generate MD5 checksum values on AIX 4 years ago. There was a need then to get the checksum values to compare if the files were the same. Then, I used the sum command.
Today, I found this command, csum. With this command, you can generate an MD5 or a SHA1 checksum.
The syntax is as below:
csum -h MD5 [filename]
Example:
csum -hMD5 .profile
Alvin Sim's Blog 
do you know why piping into csum gives a different value?
Note: this file is less than 2GB, which has been a problem in the past.
bash-4.3# csum -hMD5 testfile
9834c2bfb45b1b36512f253080d1ecb1 testfile
bash-4.3# cat testfile | csum -hMD5 –
2398ff3d22f6de98c2c39b6479a4e431 –