Yan's collection of scripts for daily chores. Use at your own risk! There is no warranty, but I do welcome comments/issues/pull requests.
del: Use this instead of rm because rm is too risky. del uses /tmp as a recycle bin so you can recover your files until you reboot.
distill-pdf.sh: Distill a PDF and generat a (somehow) PDF/A compliant PDF file using GhostScript.
media/change_framerate_no_reencode.sh: Change the framerate of a video file without reencoding it.
media/to-webp-lossless.sh: Convert images to best-compression lossless webp and preserve metadata. Useful for reduce the space for archiving large images that need lossless compression.
media/to-png.sh: Convert images to best-compression lossless png using optipng.
os/{daily-health-monitor.sh,enable-health-monitors.yaml}: Handy script for checking system health that should be run daily on servers and sending out emails.
os/fileset_par2.py: create par2 files recursively for a set of files.
os/git-compare-remote.sh: Check if a git-repo against its remote branch.
os/if-bytes-warn.sh: Check the bytes sent from all NICs and sent a warning email or run a command.
os/is-{debian/rhel}.sh: Distro detection.
os/powertune.sh: Run powertop --auto-tune but disable autosuspend for USB HID device because autosuspend could make most of them unusable.
os/pull-docker-base-image.sh: Pull the base image referred to by a dockerfile.
os/run_until_success.sh: Run a command until success.
os/start-virtualbox-vm.yaml: Ansible playbook for starting a VirtualBox VM and waiting until it starts accepting SSH connection.
os/stop-virtualbox-vm.yaml: Ansible playbook for stop a VirtualBox VM and waiting until it is fully stopped.
remote-backup: Incremental, differential, de-duplicated backup tool using zpaq (http://mattmahoney.net/dc/zpaq.html). This tool creates snapshots and uploads them to a remote host.
borgmatic_wrapper: A wrapper script for running borgmatic with anacron. Retry automatically on flaky network.
shell/_check.sh: A shell function for checking a condition with timeout.
shell/_step.sh: Functions for managing steps. You can use these functions to: * Split a script into meaningful steps. * Let user choose a start up step instead of always having to start
from the beginning.
- Resume from the interrupted step of a previous run.
vbox-remove-old-auto-snapshots.sh: A tool for keeping a certain number of VirtualBox snapshots and removing the older ones.
roles/bootstrap-linux: default tasks that need to be done on all my newly installed Debian/Ubuntu systems.
roles/mail-relay-gmx: set up a host to send outgoing emails through a GMX relay account.
roles/mysql-container: Start a MySQL container and wait until it starts to accept incoming requests.
roles/reboot: Reboot a host and wait for it to come back online.
roles/local-security-scanners: Install and set up local security scanners (for now it only includes ClamAV). The local security scan is done weekly and any changes are mailed to you. Check roles/local-security-scanners/README for instructions.
roles/bootstrap-docker: Install Docker CE.
replace-text-block.py: Find and replace a block of text.
roles/ipv6: Disable or enable IPv6.
Check out the README file of each tool for help information.
I am currently using Ubuntu 20.10 and Debian, and have only tested these tools on them. I no longer have CentOS installation, so CentOS support will gradually be removed unless someone else want to step up. But patches for supporting other OS and any kinds of improvements are always welcome!
- Many scripts lack test cases.
I try to follow Google's style as closely as possible:
Scripts that begin with _ are support scripts that generally shouldn't be called by users directly.
Code that doesn't conform to the style guide will be fixed gradually. Patches are welcome!