Posts Tagged ‘ubuntu’

FreeBSD find the chmod numerical value for a file or directory

Saturday, January 23rd, 2016

FreeBSD find the chmod numerical value for a file or directory

I need to find out the numerical value of a file on a FreeBSD system. For example, get 644 instead of -rw-r--r-- for the /etc/resolv.conf file. Is there is a way to get this value in my bash shell script?
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Debian Linux 8.3 “jessie” released and here is how to upgrade it from 8.2 to 8.3

Saturday, January 23rd, 2016

Debian Linux 8.3 “jessie” released and here is how to upgrade it from 8.2 to 8.3
Debian 8.3 DesktopThe Debian GNU/Linux project has released an updated version of its stable distribution Debian 8 (“jessie”). You must update to get corrections for security problem as this version made a few adjustments for the serious issue found in Debian 8.2.
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Linux Check Disk Space Command

Saturday, January 23rd, 2016

Linux Check Disk Space Command

I recently switched from a Windows server to a Linux server operating system. I am using Ubuntu LTS server. How do I find out disk space utilization information using command line option?
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Heads up: Google to drop support for all Chrome on 32-bit Linux distributions

Saturday, January 23rd, 2016

Heads up: Google to drop support for all Chrome on 32-bit Linux distributions
Chromium engineer Dirk Pranke says Chrome is about to drop support for all 32-bit Linux distros soon. The open source version of Chrome (Chromium) is not affected. I use Google Chrome on the 32bit netbook for Netflix, and I need to either switch to Firefox or upgrade the netbook.
rip-google-chrome-for-32-bit-linux
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How To Patch and Protect Linux Kernel Zero Day Vulnerability CVE-2016-0728 [ 19/Jan/2016 ]

Tuesday, January 19th, 2016

How To Patch and Protect Linux Kernel Zero Day Vulnerability CVE-2016-0728 [ 19/Jan/2016 ]

A very serious security problem has been found in the Linux kernel. A 0-day local privilege escalation vulnerability has existed since 2012. This bug affects millions of Android or Linux applications to escalate privileges. Any server or desktop (32 or 64 bit) with Linux Kernel version 3.8+ is vulnerable. How do I fix this problem?
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How to block an IP address with ufw on Ubuntu Linux server

Tuesday, January 19th, 2016

How to block an IP address with ufw on Ubuntu Linux server

I am using UFW to manage firewall on my Ubuntu Linux 12.04/14.04 LTS server. I need to block a specific IP address from accessing my server. How do I block an IP address using ufw?
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How to enable colorized output for the ls command in Mac OS X Terminal

Tuesday, January 19th, 2016

How to enable colorized output for the ls command in Mac OS X Terminal

I am new to Apple OS X. How do I enable colorized output for my ls command on Apple Mac OS X just like the ones that shown on my Ubuntu Linux server? How do I configure Mac OS X Terminal app to have color ls output?
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Rollback an apt-get upgrade if something goes wrong on Debian / Ubuntu Linux

Tuesday, January 19th, 2016

Rollback an apt-get upgrade if something goes wrong on Debian / Ubuntu Linux
Rolling back to the previous version may solve the problem or free the disk space. Both CentOS/RHEL support rollback feature, but I learned hard way both Debian and Ubuntu does not support rollback feature yet.


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How To Patch and Protect OpenSSH Client Vulnerability CVE-2016-0777 and CVE-2016-0778 [ 14/Jan/2016 ]

Monday, January 18th, 2016

How To Patch and Protect OpenSSH Client Vulnerability CVE-2016-0777 and CVE-2016-0778 [ 14/Jan/2016 ]

A serious security problem has been found and patched in the OpenSSH software. Two vulnerabilities have been discovered in OpenSSH on 14/Jan/2016. The OpenSSH project released an ssh client bug info that can leak private keys to malicious servers. A man-in-the-middle kind of attack identified and fixed in OpenSSH are dubbed CVE-2016-0777 and CVE-2016-0778. How do I fix OpenSSH’s client vulnerability on a Linux or Unix-like operating system?
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How to find out when Debian or Ubuntu package installed or updated

Monday, January 18th, 2016

How to find out when Debian or Ubuntu package installed or updated

How do I find and list installed Debian or Ubuntu Linux packages date? How can I see when packages got updated on my systems?
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