cloud engineer
If you have a file with @ sign at end, this is how to remove extended attributes on the Mac OS.
Example.
ls -l -rwxr-xr-x@ 4 username staff 128 Mar 24 10:51 sample.txt |
ls -l -rwxr-xr-x@ 4 username staff 128 Mar 24 10:51 sample.txt
Remove extended attributes.
xattr -c sample.txt |
xattr -c sample.txt
Result
ls -l -rwxr-xr-x 4 username staff 128 Mar 24 10:51 sample.txt |
ls -l -rwxr-xr-x 4 username staff 128 Mar 24 10:51 sample.txt
Here’s how to update SSL certificates to AWS ELB.
Import SSL certificate
aws acm import-certificate \ --certificate fileb://example.crt \ --private-key fileb://example.key \ --certificate-chain fileb://example-bundle.crt \ --tags Key=Name,Value=mydomain.com_20220107 \ --profile default |
aws acm import-certificate \ --certificate fileb://example.crt \ --private-key fileb://example.key \ --certificate-chain fileb://example-bundle.crt \ --tags Key=Name,Value=mydomain.com_20220107 \ --profile default
Add SSL to a listener.
aws elbv2 add-listener-certificates \ --listener-arn arn:aws:elasticloadbalancing:us-east-1:xxxxxxxxxxxxx:listener/app/elbname/xxxxxxxxxxxxxxxx/xxxxxxxxxxxxxxxx \ --certificates CertificateArn=arn:aws:acm:us-east-1:xxxxxxxxxxxx:certificate/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxxx \ --profile default |
aws elbv2 add-listener-certificates \ --listener-arn arn:aws:elasticloadbalancing:us-east-1:xxxxxxxxxxxxx:listener/app/elbname/xxxxxxxxxxxxxxxx/xxxxxxxxxxxxxxxx \ --certificates CertificateArn=arn:aws:acm:us-east-1:xxxxxxxxxxxx:certificate/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxxx \ --profile default
Modify listener. Set SSL certificate as default.
aws elbv2 modify-listener \ --listener-arn arn:aws:elasticloadbalancing:us-east-1:xxxxxxxxxxxxx:listener/app/elbname/xxxxxxxxxxxxxxxx/xxxxxxxxxxxxxxxx \ --certificates CertificateArn=arn:aws:acm:us-east-1:xxxxxxxxxxxx:certificate/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxxx \ --profile default |
aws elbv2 modify-listener \ --listener-arn arn:aws:elasticloadbalancing:us-east-1:xxxxxxxxxxxxx:listener/app/elbname/xxxxxxxxxxxxxxxx/xxxxxxxxxxxxxxxx \ --certificates CertificateArn=arn:aws:acm:us-east-1:xxxxxxxxxxxx:certificate/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxxx \ --profile default
Remove SSL from a listener.
aws elbv2 remove-listener-certificates \ --listener-arn arn:aws:elasticloadbalancing:us-east-1:xxxxxxxxxxxxx:listener/app/elbname/xxxxxxxxxxxxxxxx/xxxxxxxxxxxxxxxx \ --certificates CertificateArn=arn:aws:acm:us-east-1:xxxxxxxxxxxx:certificate/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxxx \ --profile default |
aws elbv2 remove-listener-certificates \ --listener-arn arn:aws:elasticloadbalancing:us-east-1:xxxxxxxxxxxxx:listener/app/elbname/xxxxxxxxxxxxxxxx/xxxxxxxxxxxxxxxx \ --certificates CertificateArn=arn:aws:acm:us-east-1:xxxxxxxxxxxx:certificate/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxxx \ --profile default
How to rebuild your application from scratch using Docker.
#!/bin/bash docker-compose down -v docker rmi $(docker images -a -q) docker-compose up -d docker-compose restart -t 10 |
#!/bin/bash docker-compose down -v docker rmi $(docker images -a -q) docker-compose up -d docker-compose restart -t 10
Steps
How to stop and remove all Docker containers.
Stop all containers
$ docker kill $(docker ps -q) |
$ docker kill $(docker ps -q)
Remove all containers
$ docker rm $(docker ps -a -q) |
$ docker rm $(docker ps -a -q)
Delete all docker images
$ docker rmi $(docker images -q) |
$ docker rmi $(docker images -q)
How to delete a line containing a pattern using sed.
Contents of test.txt.
$ cat test.txt
one
two
three |
$ cat test.txt one two three
Delete a line matching the string “one.”
sed -i '/one/d' test.txt |
sed -i '/one/d' test.txt
Display test.txt
$ cat test.txt
two
three |
$ cat test.txt two three