csvutils

A collection of command line CSV utilities.

npm install -g csvutils

To see available commands and options

$ csv --help

Usage

Peeking

To quickly see what's in each column

$ csv peek < input.csv

Sorting

Sort the rows by column number col_no

$ csv sort col_no < input.csv

To sort numerically, use the -n switch. To output rows in descending order use the -d switch

Uniques

To output rows with unique col_no

$ csv unique col_no < input.csv

Extracting a column

$ csv extract col_no < input.csv

To extract multiple columns, use $ csv extract col1 col2 colN < input.csv

Distinct Columns

To see distinct column values from col_no

$ csv extract col_no < input.csv | csv unique

Adding elements

To the start of each line

$ csv unshift element < input.csv

To the end of each line

$ csv push element < input.csv

Slicing

To input a range of lines

$ csv slice start_line end_line < input.csv

Inserting an element

$ csv insert pos element < input.csv

Replacing a column

$ csv replace pos element < input.csv

Counting lines

$ csv count < input.csv

Modifying elements

$ csv eval col_no <eval> < input.csv

E.g. remove the "," and "%" characters from column 2

$ csv eval 2 "column.replace(/[,%]/g, '')" < input.csv

If no column number is specified, the first column is eval'd.

E.g. extract column 4 and remove non-int chars

$ csv extract 4 < input.csv | csv eval "column.replace(/[^0-9]/g,'')"

Ignoring a header line

Use the --header switch.

LICENSE

Copyright (c) 2010 Chris O'Hara [e-mail]

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.