How to fix "unary operator expected error" in bash script
If testing a shell script produces [: =: unary operator expected error, check the if condition on the reported line to see whether the variable has a value and whether the code…
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389 notes on Linux, tools and troubleshooting
How to create a partition size larger than 2 TB on linux
Disks larger than 2 TB require a GPT-capable partitioning tool. gdisk works much like fdisk and supports large disks and up to 128 partitions.
Backup incoming mail from zimbra system to another mail system
Edit /opt/zimbra/postfix/conf/mail.cf and add the following two lines. sender_bcc_maps = pcre:/opt/zimbra/postfix/conf/archive_mail recipient_bcc_maps = pcre:/opt/zimbra/postfix/conf/archive_mail
How to transfer the anti-spam database to another Zimbra server
When migrating zimbra to a new system or installing a new zimbra server, you can retain spam detection as effective as the previous system.
How to install whois using yum on CentOS
whois queries domain information directly, helping administrators check domain ownership, expiry dates, or use the information in scripts.
Improving Anti-spam on Zimbra with Whitelist/Blacklist
Email sent by users often ends up in the SPAM folder of recipients on the same Domain or system because the anti-spam system considers the message to resemble SPAM.
Zimbra users migration from 32-bit to 64-bit server
Migrating user data from 32-bit Zimbra to 64-bit Zimbra follows a process similar to normal backup and restore of user data in zimbra. Steps for moving user data from a 32-bit machine to a 64-bit machine.
How to fix "Error: 0x80300001" when install Windows Server in KVM
Windows Server 2008 R2 installation on KVM can report Error: 0x80300001 when the installer cannot find or read its DVD-ROM after loading virtio drivers.
Install uTorrent on CentOS 6
uTorrent is a widely used BitTorrent client. Years ago it did not support Linux, so running it required Wine. Now uTorrent officially supports Linux…