Communities

Writing
Writing
Codidact Meta
Codidact Meta
The Great Outdoors
The Great Outdoors
Photography & Video
Photography & Video
Scientific Speculation
Scientific Speculation
Cooking
Cooking
Electrical Engineering
Electrical Engineering
Judaism
Judaism
Languages & Linguistics
Languages & Linguistics
Software Development
Software Development
Mathematics
Mathematics
Christianity
Christianity
Code Golf
Code Golf
Music
Music
Physics
Physics
Linux Systems
Linux Systems
Power Users
Power Users
Tabletop RPGs
Tabletop RPGs
Community Proposals
Community Proposals
tag:snake search within a tag
answers:0 unanswered questions
user:xxxx search by author id
score:0.5 posts with 0.5+ score
"snake oil" exact phrase
votes:4 posts with 4+ votes
created:<1w created < 1 week ago
post_type:xxxx type of post
Search help
Notifications
Mark all as read See all your notifications »
Q&A

Post History

77%
+5 −0
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 10mo ago by matthewsnyder‭  ·  edited 10mo ago by BryKKan‭

Answer
#2: Post edited by user avatar BryKKan‭ · 2023-06-12T14:18:44Z (10 months 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 (10 months 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)
```