dbcoltype - define (or redefine) types for columns of an Fsdb file
dbcol [-v] [column type...]
Define the type of each column, where COLUMN and TYPE are pairs. Or, with the -v option, redefine all types as string.
-v
The data does not change (just the header).
Remove definitions from columns that are listed, or from all columns if none are listed. The effect is to restore types to their default type of "a" (string).
and the standard fsdb options:
Enable debugging output.
Read from InputSource, typically a file, or - for standard input, or (if in Perl) a IO::Handle, Fsdb::IO or Fsdb::BoundedQueue objects.
Write to OutputDestination, typically a file, or - for standard output, or (if in Perl) a IO::Handle, Fsdb::IO or Fsdb::BoundedQueue objects.
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.
--(no)autorun
Use H as the full Fsdb header, rather than reading a header from then input.
Show help.
Show full manual.
#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
cat DATA/passwd.fsdb account | dbcoltype uid l gid l
#fsdb account passwd uid:l gid:l 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
dbcoldefine(1), dbcolcreate(1), Fsdb(3).
Copyright (C) 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.
To install Fsdb, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Fsdb
CPAN shell
perl -MCPAN -e shell install Fsdb
For more information on module installation, please visit the detailed CPAN module installation guide.