Parse text columns, like the output of Unix commands
npm install parse-columns$ df -kP
Filesystem 1024-blocks Used Available Capacity Mounted on
/dev/disk1 487350400 467871060 19223340 97% /
devfs 185 185 0 100% /dev
map -hosts 0 0 0 100% /net
import {promisify} from 'node:util';
import childProcess from 'node:child_process';
import parseColumns from 'parse-columns';
const execFileP = promisify(childProcess.execFile);
const {stdout} = await execFileP('df', ['-kP']);
console.log(parseColumns(stdout, {
transform: (item, header, columnIndex) => {
// Coerce elements in column index 1 to 3 to a number
if (columnIndex >= 1 && columnIndex <= 3) {
return Number(item);
}
return item;
}
}));
/*
[
{
Filesystem: '/dev/disk1',
'1024-blocks': 487350400,
Used: 467528020,
Available: 19566380,
Capacity: '96%',
'Mounted on': '/'
},
…
]
*/Type: string
The text columns to parse.
Type: object
Type: string
Default: ' '
Separator to split columns on.
Type: string[]
Headers to use instead of the existing ones.
Type: Function
Transform elements.
Useful for being able to cleanup or change the type of elements.
The supplied function gets the following arguments and is expected to return the element:
element(string)header(string)columnIndex(number)rowIndex(number)
- parse-columns-cli - CLI for this module
