dbcolrename - Man Page
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)autorunoption 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 databaseCommand
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_lastSee Also
Fsdb.
AUTHOR and COPYRIGHT
Copyright (C) 1991-2022 by John Heidemann <johnh@isi.edu>
This program is distributed under terms of the GNU general public license, version 2. See the file COPYING with the distribution for details.
Referenced By
dbcolsplittocols(1), dbcolsplittorows(1).