From: W. Trevor King <wking@tremily.us>
Date: Sat, 21 Sep 2013 17:18:15 +0000 (-0700)
Subject: monfold.sh: Use here-documents to write GPFILE
X-Git-Url: http://git.tremily.us/?p=blog.git;a=commitdiff_plain;h=04a537972901286f54e3841084c76d19f20c9b57

monfold.sh: Use here-documents to write GPFILE

Instead of wasting a call to echo.  Here-documents are in POSIX [1].

[1]: http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_07_04
---

diff --git a/posts/inotify/monfold.sh b/posts/inotify/monfold.sh
index 9344601..33d1035 100755
--- a/posts/inotify/monfold.sh
+++ b/posts/inotify/monfold.sh
@@ -27,9 +27,11 @@ DATALINK="./monfold.data"
 OUTFILE="./monfold.png"
 ACTION="scp $OUTFILE einstein:./public_html/rsrch/monfold.png" # upload to web
 
-echo "set terminal png
+cat > "$GPFILE" <<EOF
+set terminal png
 set output '$OUTFILE'
-plot '$DATALINK' using ((\$1/2**15-1)*10):((\$2/2**15-1)*10)" > "$GPFILE"
+plot '$DATALINK' using ((\$1/2**15-1)*10):((\$2/2**15-1)*10)"
+EOF
 
 # The way output from the unfolding software works, we get a bunch of
 #   YYYYMMDDHHMMSS_unfold