One-liner - OpenSource is Better

AWS dynamic IP ranges

Need to know the dynamic IP ranges used by AWS in a specific region? AWS publishes this as a JSON file.

curl -s https://ip-ranges.amazonaws.com/ip-ra[......]Read more

When dealing with hardware, you often see log messages like:

ata9: hard resetting link
ata9: SATA link up 1.5 Gbps (SStatus 113 SControl 310)

To map[……]

Somebody had the brilliant idea of using Unix timestamps in Squid log files. It makes parsing easy but reading them is not so human-friendly.

This is[……]

Say you have a file called test.txt:

line 1
line 2
line 3

Remove the first line:

tail -n +2 test.txt

Remove the last line:

head -n -1 test.txt

R[……]

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Sometimes when creating one-liners, the source contains non-ASCII characters that make parsing harder. To strip them all out, use Perl:

cat dirty-sou[......]Read more

To pull the latest version of all your Docker images at once:

for docker in $(docker images | awk '{print $1,$2}' | sed 's/ /:/g' | grep -v REPOSITOR[......]Read more

To update all your pip-installed Python packages at once:

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

This lists outdated packa[……]