The first 3 practicals are done on ECS, so it is required to login to ics-login first:

%ssh ecs-login

Users with full HPC access can do the practicals from hpc-login node as well.

Exercise 4) is done from your local computer or laptop with (s)ftp.


1)

Create new directory in ectmp and archive file: /home/trx/grib_practicals.tar to the directory:

%emkdir ectmp:training_2023                # create a new directory in ectmp
%ecd ectmp:training_2023                   # change ECFS directory to your new ECFS directory
%epwd ectmp:                               # see what is your current directory in ectmp
%ecp /home/trx/grib_practicals.tar ectmp:  # copy the file to your current ectmp directory
%els -l ectmp:                             # list your current ectmp directory (the grib_practicals.tar file should appear in the list now)
%ecd ectmp:                                # go back to your ectmp home
%els -l ectmp:                             # you should see your training_2023 directory now 
%els -l ectmp:training_2023/               # list the directory to see grib_practicals.tar file inside


2)

In GRIB practical session you have already unpacked grib_practicals.tar in your $SCRATCH or another folder on ECS. Archive the entire folder to ECFS (ectmp) as one ECFS file.

%ecfsdir grib_practicals ectmp:

    grib_practicals
    grib_practicals  directory saved

%els -l ectmp:
    -rw-r-----   1 user     group           37014528 Nov  2 16:15 grib_practicals

Note, in ECFS your Unix directory structure is saved as a file.


3)

Restore your grib_practicals directory from ECFS

%mkdir $SCRATCH/temp_dir_for_ECFS_practicals              # create temporarily directory
%cd $SCRATCH/temp_dir_for_ECFS_practicals
%ecfsdir ectmp:grib_practicals ./grib_practicals_copy     # download the directory previously saved in ECFS to your local directory with name grib_practicals_copy/

%ls -l
    total 4
    drwxr-x--- 5 user group 4096 Nov  2 16:26 grib_practicals_copy


4)

Download one ECFS file directly from your local computer / laptop via ECaccess (requires (s)ftp on your local computer).

%sftp <ECMWF username>@boaccess.ecmwf.int
Authorized access only.

***************************************************************
   For further information, read the ECaccess documentation at:

   https://software.ecmwf.int/wiki/display/ECAC/ECaccess+Home

   You can also use ECaccess to load & download files from your
   EChome, ECscratch or ECfs directories using the ECaccess FTP
   server:

   ftp://uid@boaccess.ecmwf.int/

   Please note you must use your passcode to login!
***************************************************************

(usbk@boaccess.ecmwf.int) usbk@88.152.186.157's password:

{Enter your first configured TOTP}

Connected to boaccess.ecmwf.int.

sftp> ls -l
drwxr-x--- 1 16924    1212            2048 Oct 31 11:06 ECFS
drwxr-x--- 1 16924    1212            2048 Oct 31 11:06 ECHOME
drwxr-x--- 1 16924    1212            2048 Oct 31 11:06 ECHOST
drwxr-x--- 1 16924    1212            2048 Oct 31 11:06 ECSCRATCH
drwxr-x--- 1 16924    1212            2048 Oct 31 11:06 ECTMP
drwxr-x--- 1 16924    1212            2048 Oct 31 11:06 TMP 

sftp> cd ECTMP
sftp> cd training_2023
sftp> ls -l
-rw-r----- 1 16924    1212        37027840 Nov 01 19:56 grib_practicals.tar

sftp> get grib_practicals.tar
 Fetching /ECTMP/training_2023/grib_practicals.tar to grib_practicals.tar
grib_practicals.tar                                                                                              100%   35MB   3.7MB/s   00:09    

sftp> quit

The file should be in your local folder on your computer.