NAME

csvcut - csvcut Documentation

DESCRIPTION

Filters and truncates CSV files. Like the Unix "cut" command, but for tabular data:

usage: csvcut [-h] [-d DELIMITER] [-t] [-q QUOTECHAR] [-u {0,1,2,3}] [-b]


              [-p ESCAPECHAR] [-z FIELD_SIZE_LIMIT] [-e ENCODING] [-S] [-H]


              [-K SKIP_LINES] [-v] [-l] [--zero] [-V] [-n] [-c COLUMNS]


              [-C NOT_COLUMNS] [-x]


              [FILE]
Filter and truncate CSV files. Like the Unix "cut" command, but for tabular
data.
positional arguments:


  FILE                  The CSV file to operate on. If omitted, will accept


                        input as piped data via STDIN.
optional arguments:


  -h, --help            show this help message and exit


  -n, --names           Display column names and indices from the input CSV


                        and exit.


  -c COLUMNS, --columns COLUMNS


                        A comma-separated list of column indices, names or


                        ranges to be extracted, e.g. "1,id,3-5". Defaults to


                        all columns.


  -C NOT_COLUMNS, --not-columns NOT_COLUMNS


                        A comma-separated list of column indices, names or


                        ranges to be excluded, e.g. "1,id,3-5". Defaults to no


                        columns. Ignores unknown columns.


  -x, --delete-empty-rows


                        After cutting, delete rows which are completely empty.

See also: Arguments common to all tools.

NOTE:

csvcut does not implement row filtering, for this you should pipe data to csvgrep.

NOTE:

If a data row is longer than the header row, its additional columns are truncated.

EXAMPLES

Print columns

Print the indices and names of all columns:

$ csvcut -n examples/realdata/FY09_EDU_Recipients_by_State.csv


  1: State Name


  2: State Abbreviate


  3: Code


  4: Montgomery GI Bill-Active Duty


  5: Montgomery GI Bill- Selective Reserve


  6: Dependents' Educational Assistance


  7: Reserve Educational Assistance Program


  8: Post-Vietnam Era Veteran's Educational Assistance Program


  9: TOTAL


 10:

Print only the names of all columns, by removing the indices with the cut command:

$ csvcut -n examples/realdata/FY09_EDU_Recipients_by_State.csv | cut -c6-
State Name
State Abbreviate
Code
Montgomery GI Bill-Active Duty
Montgomery GI Bill- Selective Reserve
Dependents' Educational Assistance
Reserve Educational Assistance Program
Post-Vietnam Era Veteran's Educational Assistance Program
TOTAL

Extract columns

Extract the first and third columns:

csvcut -c 1,3 examples/realdata/FY09_EDU_Recipients_by_State.csv

Extract columns named "TOTAL" and "State Name" (in that order):

csvcut -c TOTAL,"State Name" examples/realdata/FY09_EDU_Recipients_by_State.csv

Extract a column that may not exist in all files:

echo d, | csvjoin examples/dummy.csv - | csvcut -c d


 echo d, | csvjoin examples/join_no_header_row.csv - | csvcut -c d

Other

Add line numbers to a file, making no other changes:

csvcut -l examples/realdata/FY09_EDU_Recipients_by_State.csv

Display a column's unique values:

csvcut -c 1 examples/realdata/FY09_EDU_Recipients_by_State.csv | sed 1d | sort | uniq

Or:

csvcut -c 1 examples/realdata/FY09_EDU_Recipients_by_State.csv | csvsql --query 'SELECT DISTINCT("State Name") FROM stdin'

AUTHOR

Christopher Groskopf and contributors

COPYRIGHT

2016, Christopher Groskopf and James McKinney