Procedure to access optical disks on julia:

The following procedure assumes that the user is familiar with Unix. If not, go to http://www.bic.mni.mcgill.ca/external/UNIXhelp/ and/or find an introductory book to Unix.

The optical drive is attached to julia, an O2 located in the wedge - that room between the PET scanning room and the entrance to the BTRC. It has no room number.

Julia is the first “blue toaster” like computer to your left when entering the room.

You then have to find the corresponding optical disk with the appropriate label - most of the optical disks can be found on the shelves to the left of julia.

Some other optical disks are located in the computer room which now has a restricted access policy so if you think the disk is there, ask one of the [ ContactDale | system’s administrators ] or send mail to trinity@bic.

When looking for mri data, typing the following command will print outfiles found and where you can find them, for example:

>find_mri cade_a
"cade_adolphus_caitl_8285000_1_0120_mri.mnc.gz" found on /home/bic/mritrans/images
"cade_adolphus_caitl_8285000_2_0120_mri.mnc.gz" found on /home/bic/mritrans/images
"cade_adolphus_caitl_8285000_5_0120_mri.mnc.gz" found on /home/bic/mritrans/images

In this example, the rightmost string tells you that the data is online since it prints out a directory name.

>find_mri milot
"milot_sylvain_11436000_1_0120_mri.mnc.gz" found on mritrans_24a
"milot_sylvain_11436000_2_0120_mri.mnc.gz" found on mritrans_24a

In this example, the rightmost string is an optical disk label - you simply have to find the corresponding disk with that label on the shelves. There’s no equivalent procedure for other optical disk contents although one can find optical disk listings in /data/disk2/optical_listings/. Use grep to search thru them, for example:

>egrep -i '~DiMeglio.*stat.*rep-sb' /data/disk2/optical_listings/pet_clinical_studies_*
/data/disk2/optical_listings/pet_clinical_studies_29:-rw-r--r--    1 sylvain  pet          4335 Jul 21  2003 cl_~DiMeglio_stat_rep-sb_sub.cls
/data/disk2/optical_listings/pet_clinical_studies_29:-rw-r--r--    1 sylvain  pet         27324 Jul 21  2003 cl_~DiMeglio_stat_rep-sb_sub.dvi
/data/disk2/optical_listings/pet_clinical_studies_29:-rw-r--r--    1 sylvain  pet       2444062 Jul 21  2003 cl_~DiMeglio_stat_rep-sb_sub.mnc.gz
/data/disk2/optical_listings/pet_clinical_studies_29:-rw-r--r--    1 sylvain  pet         81165 Jul 21  2003 cl_~DiMeglio_stat_rep-sb_sub.ps
/data/disk2/optical_listings/pet_clinical_studies_29:-rw-r--r--    1 sylvain  pet          4886 Jul 21  2003 cl_~DiMeglio_stat_rep-sb_sub.sss
/data/disk2/optical_listings/pet_clinical_studies_29:-rw-r--r--    1 sylvain  pet          3883 Jul 21  2003 cl_~DiMeglio_stat_rep-sb_sub.tag
/data/disk2/optical_listings/pet_clinical_studies_29:-rw-r--r--    1 sylvain  pet          8877 Jul 21  2003 cl_~DiMeglio_stat_rep-sb_sub.tex

Now to access the contents of any optical disk, insert the optical disk into the optical drive and use the following commands to mount and unmount the filesystem:

The comands to mount and dismount are ‘mntopt1’ and ‘dismopt1’, e.g:

‘mntopt1 r’ - will mount the disk in read only on the ‘/optical’ mount point.

‘ls -al /optical’ - will list the contents.

‘dismopt1’ - will unmount the filesystem

The rest depends on your familiarity with Unix.