limitar um professor a visualisar apenas a informação do grupo a que pertence

eduardo
2 Nov 2016

To do this for all teachers globally:

Site administration > Users > Permissions > Define roles
Select the editing teacher role;
Click to edit the role
Click the Show advanced button
Type in the search box accessallgroups
When it appears, click Prevent

To do this within a course:

Course administration > Users > Permissions
Type accessallgroups into the filter
Click the X to remove from the editing teacher (Teacher) role.

comparar ficheiros binários no linux

eduardo
29 Oct 2016

How do I compare binary files in Linux

This will print the offset and bytes in hex:

cmp -l file1.bin file2.bin | gawk '{printf "%08X %02X %02X\n", $1, strtonum(0$2), strtonum(0$3)}'

Or do $1-1 to have the first printed offset start at 0.

cmp -l file1.bin file2.bin | gawk '{printf "%08X %02X %02X\n", $1-1, strtonum(0$2), strtonum(0$3)}'

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configurar servers

eduardo
26 Oct 2016

utilizador/rede
criar utilizador:
adduser neo

mudar de utilizador:
su neo
cd ~

copiar credenciais ssh:
mkdir .ssh
nano .ssh/authorized_keys
chmod 600 .ssh/authorized_keys

impedir aceso ssh por palavra passe:
nano /etc/ssh/sshd_config
Port 45022
PermitRootLogin no
PasswordAuthentication no
UsePAM no
service ssh restart

remover utilizador marco:
deluser marco
rm -r /home/marco

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