tldr/pages/common/sort.md

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# sort
> Sort lines of text files.
- Sort a file in ascending order:
`sort {{filename}}`
- Sort a file in descending order:
`sort -r {{filename}}`
- Sort a file in case-insensitive way:
`sort --ignore-case {{filename}}`
- Sort a file using numeric rather than alphabetic order:
`sort -n {{filename}}`
- Sort the passwd file by the 3rd field, numerically:
`sort -t: -k 3n /etc/passwd`
- Sort a file preserving only unique lines:
`sort -u {{filename}}`
- Sort human-readable numbers (in this case the 5th field of `ls -lh`):
`ls -lh | sort -h -k 5`