Confused about redirecting output from awk. Post: 302196909

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Top Forums Shell Programming and Scripting Confused about redirecting output from awk. Post 302196909 by face1 on Monday 19th of May 2008 09:08:02 PM

05-19-2008

Registered User

Confused about redirecting output from awk.

I have a simple script written in awk whose purpose is to go through some php files and replace some strings. Naturally, I want the changes to be written out to the files. The script looks generally as follows:

Code:

{ 
gsub(/'replacethis'/, "with this");  # a bunch of these

print $0 > FILENAME
}

This does the replacements just fine, and writes them out to the original file, as desired. However, for files over 4096 bytes, the file is truncated to 4096 bytes. Additionally, if I change the 'print $0 > FILENAME' line to just 'print $0', it outputs the entire file into the terminal. The problem only appears to exist when writing into a file. Why is this, and what can I do about it?

Oh also, I forgot to mention that I need to do the output redirection inside of the awk script, because I run it as follows, as I want it run on every .php file.

Code:

find . -name "*.php" | xargs awk  -f fixdb.awk

face1

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igawk

IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME

       igawk - gawk with include files

SYNOPSIS

       igawk [ all gawk options ] -f program-file [ -- ] file ...
       igawk [ all gawk options ] [ -- ] program-text file ...

DESCRIPTION

       Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1).

       AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like

	      @include getopt.awk

       in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path.

OPTIONS

       See gawk(1) for a full description of the AWK language and the options that gawk supports.

EXAMPLES

       cat << EOF > test.awk
       @include getopt.awk

       BEGIN {
	    while (getopt(ARGC, ARGV, "am:q") != -1)
		 ...
       }
       EOF

       igawk -f test.awk

SEE ALSO

       gawk(1)

       Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995.

AUTHOR

       Arnold Robbins (arnold@skeeve.com).

Free Software Foundation					    Nov 3 1999								  IGAWK(1)

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