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Full Discussion: Sort and join all .csv files
Top Forums UNIX for Dummies Questions & Answers Sort and join all .csv files Post 302560307 by shruthidwh on Thursday 29th of September 2011 11:57:34 AM
Old 09-29-2011
Sort and join all .csv files

Hi ,

I have a dump of .csv files in a folder, I need to sort all files by the first 3 columns and merge them all in one big csv file.

I am using a cat command to join them, but how can i sort before appending all the files as one big file,

Regards,
Shruthi
 

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flow-merge(1)						      General Commands Manual						     flow-merge(1)

NAME
flow-merge -- Merge flow files. SYNOPSIS
flow-merge [-aghm] [-b big|little] [-C comment] [-d debug_level] [-o filename] [-z z_level] [file|directory ...] DESCRIPTION
The flow-merge utility processes files and/or directories of files in the flow-tools format. The resulting merged data set is written to the standard output or file specified by -o. If file is a single dash (`-') or absent, flow-merge will read from the standard input. Unlike flow-cat, flow-merge interleaves flow records preserving the relative chronological order. OPTIONS
-a Do not ignore filenames that begin with tmp. -b big|little Byte order of output. -C Comment Add a comment. -d debug_level Enable debugging. -g Sort file list by capture start time before processing. -h Display help. -m Disable the use of mmap(). -p Preload headers. Use to preserve meta information such as lost flows. -o file Write to file instead of the standard out. -z z_level Configure compression level to z_level. 0 is disabled (no compression), 9 is highest compression. file|directory... Process the files and/or directory. EXAMPLES
Merge all flow files begining with ft-v05.2001-05.01, use flow-print to display the results. flow-merge ft-v05.2001-05-01.* | flow-print BUGS
None known. AUTHOR
Larry Lidz ellidz@eridu.uchicago.edu SEE ALSO
flow-tools(1) flow-merge(1)
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