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[......]
Tag: Bash
Bash is the shell, or command language interpreter, for the GNU operating system.
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[……]
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[......]
Convert Squid/timestamps to a human readable format
Somebody had the brilliant idea to use Unix timestamps in the Squid log.
I suppose this makes it easy to parse, not so easy to read for us humans tho[……]
bash – remove first line with tail and last line with head
You can achieve the same result with other (more powerful) tools, but I like this approach because it’s the simplest I can think of.
Let’s say you[……]
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[……]
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[……]
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[……]
Test email from command line
After having setup an email server (eg: using gmail as smtp server or sendmail as a SMART HOST or any other way you want..) you need to test it.[……]