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Full Discussion: Why does the gawk-function close return -1 ?
Top Forums Shell Programming and Scripting Why does the gawk-function close return -1 ? Post 302971033 by wilmaed on Friday 15th of April 2016 01:20:08 AM
Old 04-15-2016
Why does the gawk-function close return -1 ?
Hallo,

why does the gawk-function close return -1 ? Smilie
the file sortiert.txt was created and exists (with the sorted print-string).

The source Code:
Code:
BEGIN{
	print	"b\n\na\nx\n9" | "sort  > sortiert.txt"
	error = close ("sort > sortiert.txt")
	print error
	if (error) {print "close error"} else {print "close ok"}
}

in this example close returns 0 (as expected):

Code:
BEGIN{
print "I am the content" > "foo.txt"
error=	close ("foo.txt")
if (error) {print "close error"} else {print "close ok"}
			}


example 3: close returns 0 (as expected):

Code:
BEGIN{
    "date" | getline
    if (!NF) {exit -1;}
    print "Date: ", $0
    error=close("date")
if (error) {print "close error"} else {print "close ok"}
}

 

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LEARN ABOUT DEBIAN

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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