DBCOLRENAME

NAME

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:

-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.

AUTHOR and COPYRIGHT

Copyright (C) 1991-2022 by John Heidemann <johnh AT isi DOT edu>

This program is distributed under terms of the GNU general public license, version 2. See the file COPYING with the distribution for details.