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Chapter 13. Commands on the ThinLinc Server
tl-ssh-all
This command is used to perform shell commands on all slaves in a ThinLinc cluster. It works by
running the ssh command against all terminal servers in the cluster. When using this command, it’s
convenient if password-less SSH login between the servers in the clusters has been set up.
Best Practice: An alternative approach to using password-less login is to use the SSH agent to
cache the passphrase of a SSH keypair. This increases the security, since a malicious party
that gains access to the server which is configured to login to the other servers with SSH
key-pair does not automatically get access to the rest of the servers - a password is needed.
First, setup the SSH key-pair as described below:
#
# First time / One time procedure
#
# Generate a private and public key-pair for SSH with SSH keygen.
# When prompted pick a secret password for the key-pair.
#
ssh-keygen -t dsa
# Copy the public key to SSH authorized_keys
cp /root/.ssh/id_dsa.pub /root/.ssh/authorized_keys
# Make sure the authorized key has the right permissions
chmod 600 /root/.ssh/authorized_keys
# Copy the authorized key to all Thinlinc Agents
tl-rsync-all /root/.ssh/authorized_keys
Next, before using tl-ssh-all, do as follows
eval ‘ssh-agent‘
ssh-add
# Run your commands
tl-ssh-all rpm -Uvh /root/kdelibs-3.5.1-1.fc4.i386.rpm
Commands in /opt/thinlinc/libexec
tl-crossover-drives
CodeWeavers CrossOver allows you to configure the mapping between Windows drive letters and
paths in the Linux file system. This can be done globally by adding symbolic links to the directory
/opt/cxoffice/support/BOTTLENAME/dosdevices. However, this does not work if drive
letters should correspond to different paths for different users. In this case, a bottle hook script is
required. tl-crossover-drives is such a script that automatically maps "personal" mounts to separate
drive letters in CrossOver. This includes all mounts mounted on subdirectories in the users home
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