Hello,
I want to write (print, printf) to /dev/stdout or a file
depending on the arguments given to awk:
fig_diagnosis:
#! /bin/sh
gawk '
BEGIN {
# ARGV[0] = "gawk"
# ARGV[1] = input_file.fig
# ARGV[2] = diagnosis_file.txt
if (ARGC > 3) {
print "Usage: fig_diagnosis [input_file.fig [output_file.txt]]"
print "Eg: fig_diagnosis input_file.fig diagnosis_file.txt"
print " fig_diagnosis input_file.fig"
print " fig_diagnosis < input_file.fig > diagnosis_file.txt"
exit -1 ;
}
# ARGC=1: fig_diagnosis; no arguments -> nothing to be done, output =
/dev/stdout
# ARGC=2: fig_diagnosis input_file.fig -> nothing to be done, output =
/dev/stdout
# ARGC=3: fig_diagnosis input_file.fig diagnosis_file.txt -> set input +
output
output = "/dev/stdout"
if (ARGC == 3) {
output = ARGV[2] ;
ARGV[2] = "" ;
} ;
print "hello world" > output
exit ;
}' $*
For some reason, if I specify an output file, thing go wrong.
I find this strange because in the pinguin book, the following
construct is declared legitimate:print $1 > $3
What is wrong?
$ fig_diagnosis < roots_1.fig
hello world
Francky Leyn@[EMAIL PROTECTED]
/cygdrive/c/Documents and Settings/Francky Leyn/My
Documents/professional/fig
$ fig_diagnosis roots_1.fig
hello world
Francky Leyn@[EMAIL PROTECTED]
/cygdrive/c/Documents and Settings/Francky Leyn/My
Documents/professional/fig
$ fig_diagnosis roots_1.fig output.txt
' (No such file or directory)an't redirect to `output.txt <============
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