Using curl by default will return the response of a request as-is. If the response is a redirect, you can tell curl to follow the redirect with the -L option, e.g.
curl -L http://some.site
To use curl to download a file, use the -O option.
Mount exFat filesystem on Debian
ExFat file systems are not supported out of the box on Debian, but support is provided by installing the exfat-utils package:
# apt-get install exfat-utils Reading package lists... Done Building dependency tree Reading state information... Done The following additional packages will be installed: exfat-fuse The following NEW packages will be installed: exfat-fuse exfat-utils 0 upgraded, 2 newly installed, 0 to remove and 28 not upgraded. Need to get 73.0 kB of archives. After this operation, 295 kB of additional disk space will be used. Do you want to continue? [Y/n] y
fdisk -l shows my usb disk as:
Disk /dev/sdc: 186.3 GiB, 200049647616 bytes, 390721968 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: gpt Disk identifier: ... Device Start End Sectors Size Type /dev/sdc1 40 409639 409600 200M EFI System /dev/sdc2 411648 390721535 390309888 186.1G Microsoft basic data
So to mount sdc2:
mkdir /media/usbdisk (or whatever mountpoint you prefer)
mount -t exfat /dev/sdc2 /media/usbdisk
Done!
Checklist for accessing an AWS EC2 instance with ssh
Quick checklist of items to check for enabling ssh instance into a running EC2 instance:
- EC2 instance is started (check from AWS console)
- From AWS console, check Security Group for the instance has an inbound rule for SSH – if only accessing remotely from your current IP, you can press ‘My IP’ to set your current public IP
- From Network & Security, create a keypair and download the .pem file
- Check the public DNS name for your EC2 instance from the console
- chmod 400 your .pem file, otherwise you’ll get an error that it’s publicly readable
Connect with:
ssh -i path-to-.pem-file ec2-user@ec2-your-instance-name.compute-xyz.amazonaws.com
Docker usage notes – continued (2)
A few rough usage notes, continuing from my first post a while back.
Delete all containers:
Run a container from an image and delete it when it exits: use –rm:
docker run -it --rm containerid
Pass an argument into a build:
- use ‘ARG argname’ to declare the argument in your Dockerfile
- pass value for argname with –build-arg argname=value
Test during build if an arg was passed:
RUN test -n "$argname"