Author Archives: SoCRaT

About SoCRaT

Research Support and Infrastructure Engineer, OSS & Linux Geek

A nice way to show progress when copying files

The cp command is not really good with that, there are some ways to do it, but unnecessarily complicated. The best option is to use rsync instead: rsync –progress source destination It will show you something like this: 3885367296 0% … Continue reading

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Force PKI and Password authentication simultaneously on Ubuntu

I use AD authentication in my environment (for password-based authentication) Current Scenario A valid AD user logs in to the Ubuntu Linux server via SSH That user adds his public key to ~/.ssh/authorized_keys for passwordless login I disable/lock/delete the AD … Continue reading

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Force expiry of a Linux Account

Just locking the linux account isn’t enough, since the user can use other methods to login, such as PKI. The best solution would be to force expire the account: sudo chage -M 0 username

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Search for an AD user using PBIS and userid

Let’s say I have a user id in Linux 234234234 and I need to check which user that represents in Active Directory. All I need is: pbis enum-users | grep -B 5 -A 5 234234234 where: enum-users: returns all users … Continue reading

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Create random passwords from command line in Ubuntu

There are two handy tools that generate random passwords from the command line in Ubuntu (and other distros of course). It’s more secure to use passwords from these tools instead of online password generators. First of which is apg and … Continue reading

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How to solve vSphere Windows Client 5.1 SSL Error

In this article, I am using Windows 7 64-bit with vSphere Client 5.1.0 This issue has been bugging me for quite some time. Whenever I search for any VM inside vSphere Windows Client, I keep receiving this message, and I … Continue reading

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Use fsck with LVM

A VM’s filesystem (which was using LVM) was corrupt and it couldn’t boot. All I did was force boot from systemrescuecd and ran the following command: fsck.ext4 /dev/vgname/lvname Note: Switch ext4 to any other type of filesystem you have, e.g. … Continue reading

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