Citrix Commands to Know
aierun Run isolation environment. Primarily for use in scripting environments.
Aiesetup Install or uninstall an application from an isolation environment.
altaddr Specify server alternate IP address.
app Run application execution shell.
apputil Add servers to Configured Servers list for published applications.
auditlog Generate server logon/logoff reports.
chfarm Change the server farm membership [...]

su

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The command “su” stands for “switch user”. And it does just that, it switches users.
When it used without parameters, we are specifying to switch to the user root. However, we can use the su command to switch shell to any user account that we know the password of. In the first example, we are [...]

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Aclcheck – Security Audit Utility
 
Aclset – Set Default Security ACLs
 
Altaddr – Specify Alternate Server IP Address
 
App – Application Execution Shell
 
Auditlog – Generate Logon/Logoff Reports
 
Change /? – displays all of the different uses for the change command Change Client – changes client mapping settings Change Port -changes com port mappings Change User /install /execute /query /? [...]

ifconfig

Used to determine what IP address you have, the equivalent of the ipconfig command in Windows. You can use the command without parameters to view all interfaces, or you can be interface specific, e.g.[root@esx1host] # ifconfig vswif0vswif0    Link encap:Ethernet  HWaddr 00:50:56:49:96:03
          inet addr:192.168.1.7  Bcast:192.168.1.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:4867312 errors:0 dropped:0 [...]

vmkfstools

Used to manipulate virtual disks at the service console command line. It is used most often for import and export operations, where a virtual disk is converted from monolithic format to sparse format (previously called COW format).There is a great switch with the command -X which can be used to extend the size of [...]

The esxcfg- Commands

esxcfg-

There are a new set of command line tools in ESX 3.x which all start with “esxcfg-”. These tools are used to configure each part of the ESX 3.x configuration. For example, esxcfg-firewall is used to manage the service console firewall while the esxcfg-nic is used to manage the physical Ethernet adapters [...]

/etc/ssh/sshd_config
The configuration of SSH client is stored in the text file /etc/ssh/ssh_config
The configuration of the SSH server daemon is stored in the text file /etc/ssh/sshd_config. An important setting in this file is PermitRootLogin=No. This is the default setting in ESX 3.x and it is recommended that you keep the setting at “No”. This way you [...]