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https://github.com/ryan-williams/col-helpers
bash helpers related to slicing/formatting columns from lines of text
https://github.com/ryan-williams/col-helpers
Last synced: about 2 months ago
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bash helpers related to slicing/formatting columns from lines of text
- Host: GitHub
- URL: https://github.com/ryan-williams/col-helpers
- Owner: ryan-williams
- Created: 2019-04-26T20:09:58.000Z (over 5 years ago)
- Default Branch: main
- Last Pushed: 2024-11-10T16:25:26.000Z (about 2 months ago)
- Last Synced: 2024-11-10T16:27:43.727Z (about 2 months ago)
- Language: Python
- Homepage:
- Size: 6.84 KB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# col-helpers
bash helpers related to slicing/formatting columns from lines of text
## Install
```bash
git clone [email protected]:ryan-williams/col-helpers.git
echo "source $PWD/col-helpers/.cols-rc" >> ~/.bashrc
. ~/.bashrc
```
## Usage
### `col`: get columns or column-ranges from input
Write some test data:
```bash
cat <foo
0 1 2 3 4 5 6
0 1 2 3 4 5 6
00 11 22 33 44 55 66
00,11,22,33,44,55,66
EOF
```
Get columns from index 2 on:
```bash
cat foo | col 2:
# 2 3 4 5 6
# 2 3 4 5 6
# 22 33 44 55 66
#
```
Get columns [2,4):
```bash
cat foo | col 2:4
# 2 3
# 2 3
# 22 33
#
```
Negative indices work:
```bash
cat foo | col -2:
# 5 6
# 5 6
# 55 66
# 00,11,22,33,44,55,66
cat foo | col :-2
# 0 1 2 3 4
# 0 1 2 3 4
# 00 11 22 33 44
#
cat foo | col 2:-2
# 2 3 4
# 2 3 4
# 22 33 44
#
```
Slice an individual column:
```bash
cat foo | col -2
# 5
# 5
# 55
#
```
Customize input/output delimiters:
```bash
cat foo | col -i, -o'|' 2:5
#
#
#
# 22|33|44
```
Multiple columns/ranges can be separated by commas:
```bash
cat foo | col 1,3:-1
# 1 3 4 5
# 1 3 4 5
# 11 33 44 55
#
```
### `first`, `second`, `last`
shorthands for `col 0`, `col 1`, and `col -1`, resp.
### `splt`: split N-column lines into N lines each
```bash
echo 1 2 3 4 5 | spc
# 1
# 2
# 3
# 4
# 5
echo 1,2,3,4,5 | sp,
# 1
# 2
# 3
# 4
# 5
```
See alias definitions in [`.cols-rc`](./.cols-rc).
### `column -t` aliases
Align columns by a given delimiter.
Write some test data:
```bash
cat <foo
a,b,c,d,e
AAAAA,BBBBB,CCCCC,DDDDD,EEEEE
111,222,333,444,555
EOF
```
Format:
```bash
ct, foo
# a b c d e
# AAAAA BBBBB CCCCC DDDDD EEEEE
# 111 222 333 444 555
```
See alias definitions in [`.cols-rc`](./.cols-rc).