I figured out (hopefully correctly) that owner, group and accession rights to files and directories on an smbmount are not changeable, not even by root. Thus you have to specify everything at mount time, e.g.:
sudo mount -t smbfs -o username=jeltsch,credentials=/home/jeltsch/.smbpasswd5 -o uid=backuppc,gid=users,fmask=644,dmask=755 //patolmac217/jeltsch /mnt/jeltsch@patolmac217.hi.helsinki.fi
I got a bit confused about the ps2pdf conversion utility. Some people claim, that it invariably creates pdf files with letter pagesize. However there is the argument -sPAPERSIZE=a4 and that should make pdf files with a4-sized pages. It apparently works. If one uses eps files as input files, ps2pdf puts the eps image directly to the border of the pdf file which gets cut off during printing. There should be some utilities to correct this.
We have a shared directory (/home/shared) on our computer and a usergroup called "shared". The purpose is that we put things there that should be accessible (including writable) to several users of the system. If one user puts a file there, it can be read by others but not e.g. deleted. In order to fix this, we edited the crontab to execute every 5 minutes the following two commands:
chgrp -R shared /home/shared
chmod -R 744 /home/shared
In order to do this we edited (as root of course) the /etc/crontab file by adding the line: