Commands by wordlenyt (0)

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List of reverse DNS records for a subnet
This command uses nmap to perform reverse DNS lookups on a subnet. It produces a list of IP addresses with the corresponding PTR record for a given subnet. You can enter the subnet in CDIR notation (i.e. /24 for a Class C)). You could add "--dns-servers x.x.x.x" after the "-sL" if you need the lookups to be performed on a specific DNS server. On some installations nmap needs sudo I believe. Also I hope awk is standard on most distros.

display date of last time a process was started in `date` format
STARTED Mon Oct 18 04:02:01 2010

list block devices
Shows all block devices in a tree with descruptions of what they are.

Save your terminal commands in bash history in real time
Use this command if you want your terminal commands be saved in your history file in real time instead of waiting until the terminal is closed

Test a SSLv2 connection
Test for weak SSL version.

Reload all sysctl variables without reboot
Reload all defined kernel variables from /etc/sysctl.conf(if no parameter after -p is given) without the old myth "Ah, you'll need to reboot to apply those variables"...

Remount root in read-write mode.
Saved my day, when my harddrive got stuck in read-only mode.

MoscowML with editable input-line and history
Works also with SML/NJ and other interpreters or tools with interactive environments.

How much RAM is Apache using?
Display the amount of memory used by all the httpd processes. Great in case you are being Slashdoted!

Rename files in batch

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