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@ -268,6 +268,8 @@ EOF
mkdir empty && rsync -r --delete empty/ some-dir && rmdir some-dir
```
- You can use [`rclone`](https://rclone.org/downloads/) to manage files on remote cloud storage services, including backup/restore, encrypt/decrypt, sync.
- For monitoring progress when processing files, use [`pv`](http://www.ivarch.com/programs/pv.shtml), [`pycp`](https://github.com/dmerejkowsky/pycp), [`pmonitor`](https://github.com/dspinellis/pmonitor), [`progress`](https://github.com/Xfennec/progress), `rsync --progress`, or, for block-level copying, `dd status=progress`.
- Use `shuf` to shuffle or select random lines from a file.
@ -311,6 +313,12 @@ mkdir empty && rsync -r --delete empty/ some-dir && rmdir some-dir
## System debugging
- To log your session, open a subshell using `script [<log_file>] [-T <timing_file>]`. This starts logging of all input and output from your terminal session to `log_file` (`typescript` by default), along with optional timing information to `timing_file`. End the session using `exit`.
- View the script logging file using `less -r <log_file>`, which will handle color codes and other raw characters. You can replay a script with timings using `scriptreplay -t <timing_file> <log_file>`.
- You can augment your prompt to show when you are recording within a `script` subshell by adding the following to your `.bashrc` file: `lsof -tac script "$(tty)" > /dev/null && PS1="[recording] $PS1"`
- For web debugging, `curl` and `curl -I` are handy, or their `wget` equivalents, or the more modern [`httpie`](https://github.com/jkbrzt/httpie).
- To know current cpu/disk status, the classic tools are `top` (or the better `htop`), `iostat`, and `iotop`. Use `iostat -mxz 15` for basic CPU and detailed per-partition disk stats and performance insight.
@ -608,6 +616,7 @@ These items are relevant *only* on Windows.
- [awesome-shell](https://github.com/alebcay/awesome-shell): A curated list of shell tools and resources.
- [awesome-osx-command-line](https://github.com/herrbischoff/awesome-osx-command-line): A more in-depth guide for the macOS command line.
- [Strict mode](http://redsymbol.net/articles/unofficial-bash-strict-mode/) for writing better shell scripts.
- [bats](https://github.com/sstephenson/bats): A test suite for bash scripts.
- [shellcheck](https://github.com/koalaman/shellcheck): A shell script static analysis tool. Essentially, lint for bash/sh/zsh.
- [Filenames and Pathnames in Shell](http://www.dwheeler.com/essays/filenames-in-shell.html): The sadly complex minutiae on how to handle filenames correctly in shell scripts.
- [Data Science at the Command Line](http://datascienceatthecommandline.com/#tools): More commands and tools helpful for doing data science, from the book of the same name