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Q&A When a command takes filenames as argument, how can I avoid creating temporary files?

What you're looking for is called process substitution. In Bash and many bash-like shells, you can use <(foo_command --with --arguments) instead of the file path: diff <(ls /home/alice) &lt...

posted 1y ago by matthewsnyder‭  ·  edited 1y ago by BryKKan‭

Answer
#2: Post edited by user avatar BryKKan‭ · 2023-06-12T14:18:44Z (over 1 year ago)
Added name of feature and link to documentation.
  • In Bash and many bash-like shells, you can use `<(foo_command --with --arguments)` instead of the file path:
  • ```
  • diff <(ls /home/alice) <(ls /home/bob)
  • ```
  • What you're looking for is called [process substitution](https://tldp.org/LDP/abs/html/process-sub.html).
  • In Bash and many bash-like shells, you can use `<(foo_command --with --arguments)` instead of the file path:
  • ```
  • diff <(ls /home/alice) <(ls /home/bob)
  • ```
#1: Initial revision by user avatar matthewsnyder‭ · 2023-06-12T01:30:55Z (over 1 year ago)
In Bash and many bash-like shells, you can use `<(foo_command --with --arguments)` instead of the file path:

```
diff <(ls /home/alice) <(ls /home/bob)
```