Scanning heartbleed bug with the nmap NSE script
Heartbleed Bug: OpenSSL Security Flaw leaves secure-protocol services using OpenSSL 1.0.1 vulnerable. Administrators using OpenSSL need to check their systems.
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389 notes on Linux, tools and troubleshooting
Critical Security: Patch for OpenSSL Heartbleed Vulnerability
The OpenSSL Heartbleed bug (CVE-2014-0160) lets an attacker send a malformed heartbeat message and obtain data stored in the target machine's memory.
Heartbleed Bug: OpenSSL Security Flaw
Security researchers discovered Heartbleed (CVE-2014-0160), a bug in OpenSSL 1.0.1 through 1.0.1f and 1.0.2beta that can expose memory contents.
Rescan a SCSI bus without rebooting
After adding a hotplug-capable HDD to Linux, whether on a VM or physical machine, # fdisk -l may not show it until reboot. Rescanning SCSI can detect it without rebooting.
How to enables command-line history in SQL*PLUS
SQL*PLUS (sqlplus) does not let you press the up or down arrow to browse previous commands. It only lets you inspect one previous command, making repeated commands inconvenient.
How to get a day before current time in Bash
Use date with -d in Bash to display yesterday's date or an earlier date.
Show running processes in Oracle DB
Oracle tip: a script displays queries running on an Oracle database, similar to show processlist in MySQL.
How to trim space from bash variable
A small Bash shell tip: remove trailing spaces, leading spaces, or both from a variable with sed.
How to turn off Oracle password expiration
By default, Oracle user passwords expire after 180 days and must be changed. To remove the expiry, change PASSWORD_LIFE_TIME on the user's profile.