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Full Discussion: Replacing last line with awk and change the file name
Top Forums Shell Programming and Scripting Replacing last line with awk and change the file name Post 302914239 by Don Cragun on Saturday 23rd of August 2014 02:19:35 PM
Old 08-23-2014
Your desired output is a little ambiguous. Are the filenames included as text on the first line in the files?

Is the number to be replaced in the files a constant, or should it be extracted from the name of the file being processed.

Your for loop is only looking for files starting with f1, but it looks like you want to process all files starting with f and ending with .txt or maybe starting with f followed by one (or one or more) digits followed by an underscore and any string of 8 digits (or a particular string of 8 digits) followed by and ending with .txt. Please describe in English which set of files should be processed.

If more than one date's input files are to be processed as a set and the output files are supposed to have a single output date, are the numbers between the f and the _ in the output filenames supposed to be adjusted? If so, does the output order matter? Will there ever be more than 9 input or output files for a given date?
 

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LEARN ABOUT DEBIAN

tv_split

TV_SPLIT(1p)						User Contributed Perl Documentation					      TV_SPLIT(1p)

NAME

       tv_split - Split XMLTV listings into separate files by date and channel.

SYNOPSIS

       tv_split --output TEMPLATE [FILE...]

DESCRIPTION

       Read XMLTV listings and split them into some number of output files.  The output file chosen for each programme is given by substitutions
       on the filename template supplied.  You can split listings by time and by channel.

       The TEMPLATE is a filename but substitutions are applied: first %channel is replaced with the id of a programme's channel, and then
       Date::Manip substitutions (which broadly follow date(1)) are applied based on the start time of each programme.	In this way each programme
       is written to a particular output file.	When an output file is created it will also contain all the channel elements from the input.

       One or more input files can be given; if more than one then they are concatenated in the same way as tv_cat.  If no input files are given
       then standard input is read.

EXAMPLE

       Use "tv_split --output %channel-%Y%m%d.xml" to separate standard input into separate files for each day and channel.  The files will be
       created with names like bbc1.bbc.co.uk-20020330.xml.

SEE ALSO

       Date::Manip(3).

AUTHOR

       Ed Avis, ed@membled.com.

perl v5.14.2							    2004-01-20							      TV_SPLIT(1p)
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