mjhjmtu

Assume I'm scping a large file (300GB) from the corporate server to my workplace machine which I don't have ANY access to during the weekend (firewall blocks ssh to machines inside the office network); hence I can't just connect to it and see the progress. Now is there anyway for me to see the progress of that scp job when I ssh into the server with the same account from my home machine?
This is of course not really useful but I'm curios anyway.

You can use lsof to list information on the current files opened by the scp process on the server. Find its process id with pidof scp, for example, then use lsof -p on that pid. You will also need option -o to show the current offset within the file being read by scp. Eg

$ pidof scp
29273

$ lsof -op 29273
COMMAND PID USER FD TYPE DEVICE OFFSET NODE NAME
scp 29273 meuh cwd DIR 179,2 273367 /home/meuh
scp 29273 meuh rtd DIR 179,2 2 /
scp 29273 meuh txt REG 179,2 260817 /usr/bin/scp
...
scp 29273 meuh 0r FIFO 0,10 0t0 3005108 pipe
scp 29273 meuh 1w FIFO 0,10 0t0 3005109 pipe
scp 29273 meuh 2w FIFO 0,10 0t0 3005110 pipe
scp 29273 meuh 3r REG 179,2 0t2834432 530 /home/meuh/x

The last line shows file descriptor 3 is ready to read from offset 2834432 of file /home/meuh/x. You could use watch to repeat the command and see the changes.