dbfilecat - Man Page
concatenate two files with identical schema
Synopsis
dbfilecat --input A.fsdb [--input B.fsdb...]
or
echo A.fsdb | dbfilecat --xargs
Description
Concatenate all provided input files, producing one result. We remove extra header lines.
Inputs can both be specified with --input
, or one can come from standard input and the other from --input
. With --xargs
, each line of standard input is a filename for input.
Inputs must have identical schemas (columns, column order, and field separators).
Like dbmerge, but no worries about sorting, and with no arguments we read standard input (although that's not very useful).
Options
General option:
- --xargs
Expect that input filenames are given, one-per-line, on standard input. (In this case, merging can start incrementally.
- --removeinputs
Delete the source files after they have been consumed. (Defaults off, leaving the inputs in place.)
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
File a.fsdb:
#fsdb cid cname 11 numanal 10 pascal
File b.fsdb:
#fsdb cid cname 12 os 13 statistics
Command
dbfilecat --input a.fsdb --input b.fsdb
Output
#fsdb cid cname 11 numanal 10 pascal 12 os 13 statistics # | dbmerge --input a.fsdb --input b.fsdb
See Also
dbmerge(1), Fsdb(3)
AUTHOR and COPYRIGHT
Copyright (C) 2013-2018 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.