selr(USP)

Name

selr : Selects rows that match exactly

Synopsis

Usage   : selr <field> <str> <file>

Option  : --through <str>

Version : Tue Jan  9 09:02:34 JST 2024

Edition : 1

Description

Outputs records from <file> where the specified field <field>

matches the specified string <str> exactly.

If <file> is omitted or equal to "-", data is read from stdin.

Example 1

Only outputs rows where the specified field matches exactly.

$ cat data

0001 a

0002 b

0003 c

0004 c

$ selr 1 0001 data

0001 a

$ selr 2 c data

0003 c

0004 c

Example 2

If you specify option --through <str> then if both <str> values are

the same all records are output unconditionally, while if the two

<str> values are different, the command executes normally as if

--through were not specified.

$ selr --through _ 2 _ data

0001 a

0002 b

0003 c

0004 c

$ selr --through _ 2 a data

0001 a