Using Clonezilla to Image/Clone A Hard Drive
Step-by-step Clonezilla guide to image or clone a hard drive to disk, network share, SSH, or NFS—free Ghost/True Image alternative.
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result 32: no such object, ldapsearch -x empty database
Fix LDAP error 32 (no such object) and empty ldapsearch -x results on CentOS 6 after slapd 2.4.23 config and database changes.
Find Database Names in Microsoft SQL Server (SSMS, T-SQL and sqlcmd)
List all databases on a Microsoft SQL Server instance with SSMS, a sys.databases query, sp_databases, sqlcmd or PowerShell.
Reset LDAP Password Command Line
Reset an LDAP user password from the command line with ldappasswd—basic syntax, bind DN, and tips for scripting directory resets.
Finding the MAC address of a remote computer
Find a remote computer’s MAC address from Windows using ARP after clearing the cache—useful when identical VMs share names or IPs.
Redundant NIC Configuration (bond) CentOS
Configure a Linux NIC bond on CentOS for redundancy and load balancing—step-by-step eth0/eth1 bonding as root.
find shared libraries for binary ldd
Use ldd to list shared library dependencies for a Linux binary—quick root examples under /sbin and how to read the output.
Find Hard Drive IOPS CentOS
Measure hard drive IOPS on CentOS with sysstat’s iostat—install, run, and read idle/user I/O percentages.
Performing a MySQL Upgrade
Run mysql_upgrade after every MySQL version upgrade so tables stay optimized and backups keep working.
Show Line Numbers with Vi
Show line numbers in Vi/Vim with :set number so you can jump to config lines fast—quick tip for Linux admins.