dbcolrename man page

dbcolrename — change the names of columns in a fsdb schema

Synopsis

dbcolrename OldName1 NewName1 [OldName2 NewName2] ...

Description

Dbcolrename changes the names of columns in a fsdb schema, mapping OldName1 to NewName1, and so on for multiple pairs of column names.

Note that it is valid to do "overlapping" renames like "dbcolrename a b b a".

Options

No non-standard options.

This module also supports the standard fsdb options:

-d
Enable debugging output.
-i or --input InputSource
Read from InputSource, typically a file name, or "-" for standard input, or (if in Perl) a IO::Handle, Fsdb::IO or Fsdb::BoundedQueue objects.
-o or --output OutputDestination
Write to OutputDestination, typically a file name, or "-" for standard output, or (if in Perl) a IO::Handle, Fsdb::IO or Fsdb::BoundedQueue objects.
--autorun or --noautorun
By default, programs process automatically, but Fsdb::Filter objects in Perl do not run until you invoke the run() method. The "--(no)autorun" option controls that behavior within Perl.
--help
Show help.
--man
Show full manual.

Sample Usage

Input

#fsdb account passwd uid gid fullname homedir shell
johnh * 2274 134 John_Heidemann /home/johnh /bin/bash
greg * 2275 134 Greg_Johnson /home/greg /bin/bash
root * 0 0 Root /root /bin/bash
# this is a simple database

Command

cat DATA/passwd.fsdb | dbcolrename fullname first_last

Output

#fsdb      account passwd  uid     gid     first_last      homedir shell
johnh * 2274 134 John_Heidemann /home/johnh /bin/bash
greg * 2275 134 Greg_Johnson /home/greg /bin/bash
root * 0 0 Root /root /bin/bash
# this is a simple database
#  | dbcolrename fullname first_last

See Also

Fsdb.

Referenced By

dbcolsplittocols(1), dbcolsplittorows(1).

2016-09-05 perl v5.24.0 User Contributed Perl Documentation