• bash users should:

. ~/ccp4/ccp4-8.0/bin/ccp4.setup-sh

  • but if you use tcsh or csh then instead:

source ~/ccp4/ccp4-8.0/bin/ccp4.setup-csh

  • then issue the commands:

echo $CCP4
/home/software/ccp4/ccp4-8.0
mtzdmp $CCP4/examples/rnase/rnase18.mtz | grep Space
* Space group = P 21 21 21 (number 19)