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https://github.com/ryan-williams/comm-helpers
Wrappers and aliases for the bash `comm` utility for comparing lines between two inputs
https://github.com/ryan-williams/comm-helpers
Last synced: about 2 months ago
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Wrappers and aliases for the bash `comm` utility for comparing lines between two inputs
- Host: GitHub
- URL: https://github.com/ryan-williams/comm-helpers
- Owner: ryan-williams
- Created: 2019-04-26T20:15:04.000Z (over 5 years ago)
- Default Branch: main
- Last Pushed: 2024-08-28T13:49:04.000Z (4 months ago)
- Last Synced: 2024-10-20T07:45:17.653Z (3 months ago)
- Language: Shell
- Homepage:
- Size: 1.95 KB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# comm-helpers
Wrappers and aliases for the bash `comm` utility for comparing lines between two inputs
## Install
```bash
git clone [email protected]:ryan-williams/comm-helpers.git
echo "source $PWD/comm-helpers/.comm-rc" >> ~/.bashrc
. ~/.bashrc
```
## Usage
### `c1`, `c2`, `c3`, `c12`, `c13`, `c23`
Invert the `-1`, `-2`, and `-3` flags to `comm`, which normally *exclude* columns, for a more concise and intuitive API:
### `comm-count` (`cmc`), `comm-sort` (`cms`), `comm-count-sort` (`cmcs`)
Wrap `comm`, optionally [sort the inputs] and [count the output lines in each selected category (left only, right only, both)].
Count multiples of 2 (but not 3), 3 (but not 2), and 6 (2 and 3), in (0,60]:
```bash
cmcs <(seq 60 -2 2) <(seq 3 3 60)
# 20 10 10
```
Note: the multiples of 2 (`seq 60 -2 2`) are input in descending order, but `cmcs` sorts the inputs before "joining" them.
Sort and show the multiples of 2, 3, and 6 in (0,30]:
```bash
cms <(seq 30 -2 2) <(seq 3 3 30) | sort -n
# 2
# 3
# 4
# 6
# 8
# 9
# 10
# 12
# 14
# 15
# 16
# 18
# 20
# 21
# 22
# 24
# 26
# 27
# 28
# 30
```