https://github.com/dfithian/bashisms

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# bashisms

Annotated commands and utilities, persisted to help me remember them.

# commands

```bash
top # then press "1" to get CPU% per core

ps faxwu # subprocess tree, add more w's for more info
ps axl

lsof -p # list open files, look for pipes

strace -p # look at the syscalls for this process
strace -f # follow a command - everything and everything it forks

free -h # human readable
```

# nix

```bash
nix-shell --option fallback true --option substitute false # if hydra is down
```