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# usefull when parse output frow aws cli

# from https://github.com/stedolan/jq/issues/370
jq '.Attributes[] | select (.Name == "public_ip") | .Value'

# json to bash-style env
jq  -r  'to_entries | .[] | .key + "=\"" + .value + "\""' | grep -P '^AWS_(REGION|ACCESS_KEY|SECRET|SESSION)'

# parse CloudTail logs (from http://flaws2.cloud/defender3.htm )
jq -cr '.Records[]|[.eventTime, .sourceIPAddress, .userIdentity.arn, .userIdentity.accountId, .userIdentity.type, .eventName]|@tsv' | sort

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[root@bigben audit]# iptables --line-numbers -n -L -t nat
Chain PREROUTING (policy ACCEPT)
num  target     prot opt source               destination         
1    DOCKER     all  --  0.0.0.0/0            0.0.0.0/0            ADDRTYPE match dst-type LOCAL

Chain INPUT (policy ACCEPT)
num  target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
num  target     prot opt source               destination         

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for i in {1..83} ; do echo $i ; pdftoppm file.pdf page-$i -png -f $i -singlefile ; done; 

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nvm install 11.9.0 --reinstall-packages-from=11.8.0
nvm ls-remote
du -sh ~/.nvm/versions/node/*

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#!/bin/bash -xe

VGNAME=eph

# now we need to check that we use ephemeral disk as /dev/xvdb
# its very naive check but better then nothing because operations above can be dangerous
if ! lsblk | grep '^xvdb' | grep 75G > /dev/null ; then
  echo "Problems with expectations for /dev/xvdb"
  exit 1
fi

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hhvm.conf:

check program check-hhvm with path "/etc/monit/bin/check-hhvm.sh"
  if status != 0 then alert
  if status != 0
  then exec "/usr/sbin/service hhvm restart"
  
/etc/monit/bin/check-hhvm.sh:
#!/bin/bash

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# rename files with complex names
j=1
for f in *.jpg ; do
  echo "mv '$f' p${j}.jpg"
  j=$((j+1))
done

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lvextend  -L +90G /dev/exhdd/backup
btrfs: btrfs filesystem resize max /mnt/backup/

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AWS Lambda + Node Modules, no Docker required : https://medium.com/@haydnjmorris/aws-lambda-node-modules-no-docker-required-76443a0f6c4e
Automate Custom EC2 AMIs: (python, terraform, docker): https://medium.com/devopslinks/automate-custom-ec2-amis-155af71fae7d

NEWS about JAVA + Docker:
https://blog.softwaremill.com/docker-support-in-new-java-8-finally-fd595df0ca54?gi=53e209ef5a04
https://blog.docker.com/2018/04/improved-docker-container-integration-with-java-10/

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#!/bin/bash

rm -rf /var/run/nginx-cache/*
rm -rf /home/shop_production/htdocs/var/cache/*

rm -rf /cache/catalog-cache/*
rm -rf /cache/shop-cache/*
rm -rf /cache/nginx-cache/*

# clean redis