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Category: How To

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AWS dynamic IP ranges

Hi,

What are the dynamic IP ranges used by AWS in Ireland for the EC2 service?

$ curl -s https://ip-ranges.amazonaws.com/ip-ranges.json | jq '.p[......]

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Author AndreaPosted on November 15, 2018Categories Fun, How To, Programming, TipTags AWS, Bash, Linux, One-linerLeave a comment on AWS dynamic IP ranges

How to soft reset Linux disks

Sometimes disks stop responding and cause issues/slowness to the whole system, simply because the system is expecting some sort of response.
In these[……]

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Author AndreaPosted on November 27, 2017Categories How To, TipTags Bash, Hard Disk, LinuxLeave a comment on How to soft reset Linux disks

Find sdx device/ATAx mappings

When dealing with hardware, you often see messages in the logs about disk issues or warnings.
Messages like:

ata9: hard resetting link
ata9: SATA[......]

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Author AndreaPosted on March 18, 2017Categories How To, Programming, TipTags Bash, Hard Disk, Linux, One-linerLeave a comment on Find sdx device/ATAx mappings

sed – match and replace BIND/DNS serial number programmatically

I had to make some modifications to several BIND zone files, sed proved itself invaluable once again!

All the zone files looked something like this[……]

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Author AndreaPosted on January 27, 2017March 18, 2017Categories How To, Programming, TipTags Bash, DNS, SedLeave a comment on sed – match and replace BIND/DNS serial number programmatically

Remove all non-ascii characters with perl

Sometimes when creating one-liners, when the source is not “clean”, you may end up with non-ascii characters which make the parsing harder.

To get[……]

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Author AndreaPosted on January 26, 2017January 26, 2017Categories How To, Programming, TipTags One-liner, PerlLeave a comment on Remove all non-ascii characters with perl

Converting spreadsheets to text files with ssconvert

ssconvert is a utility shipped with Gnumeric, and it’s a command line spreadsheet converter.

Let’s say that you have some data in a spreadsheet (eg[……]

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Author AndreaPosted on January 25, 2017January 31, 2017Categories How To, Programming, TipTags BashLeave a comment on Converting spreadsheets to text files with ssconvert

How to update all docker base images with one command

for docker in $(docker images|awk '{print $1,$2}'|sed 's/ /:/g'|grep -v REPOSITORY); do docker pull $docker; done

This command updates all your[……]

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Author AndreaPosted on October 4, 2016January 26, 2017Categories How To, Programming, TipTags Bash, Docker, Linux, One-linerLeave a comment on How to update all docker base images with one command

How to update all pip python packages with one command

sudo pip install -U `pip list -o|cut -d ' ' -f1|tr '\n' ' '`

NB: One liners are potentially destructive. Don’t run anything unless you fully un[……]

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Author AndreaPosted on September 11, 2016January 25, 2017Categories How To, Programming, TipTags Bash, Linux, One-liner, Pip, PythonLeave a comment on How to update all pip python packages with one command

Proxmox – Passthrough card/device to openVz container

I wanted to passthrough a dual tuner TV card (Hauppauge WinTV Nova-T-500) to an openVz container in order to use tvHeadEnd.

Here I show how to achi[……]

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Author AndreaPosted on February 23, 2014January 26, 2017Categories How ToTags Linux, ProxmoxLeave a comment on Proxmox – Passthrough card/device to openVz container

Use Remmina to satisfy all your remote connection needs

Remmina is a remote desktop client that support multiple network protocols (RDP, VNC, NX, XDMCP and SSH) in a nice and very user friendly GUI.

In i[……]

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Author AndreaPosted on February 13, 2014January 25, 2017Categories How ToTags Linux, OpenSource, ssh, UbuntuLeave a comment on Use Remmina to satisfy all your remote connection needs

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