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cheatsheet-tldr/tldr/less-than-more-than
2025-08-27 00:19:48 +00:00

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---
syntax: markdown
tags: [tldr, common]
source: https://github.com/tldr-pages/tldr.git
---
# <>
> Open a file descriptor for read and write.
> More information: <https://www.gnu.org/software/bash/manual/bash.html#Opening-File-Descriptors-for-Reading-and-Writing>.
- Open a file in a file descriptor for read an write:
`exec {{3}}<>{{path/to/file}}`
- Open a file descriptor to a remote connection:
`exec {{3}}<>/dev/{{tcp}}/{{remote_host}}/{{port_number}}`
- Close a file descriptor:
`exec {{3}}<>-`