* dnsquery(8): prompt on stderr
@ 2019-08-30 9:13 vp
0 siblings, 0 replies; only message in thread
From: vp @ 2019-08-30 9:13 UTC (permalink / raw)
To: 9front
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dnsquery(8) prints the interactive prompt on stdout together with
query results, making scripted usage unnecessarily difficult.
A straightforward solution is prompting on stderr instead: as
practiced by rc(1), among many others -- promptly taking care of
the issue:
; echo 9front.org mx | ndb/dnsquery >[2]/dev/null
--
kvik
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diff -r 7789bbc91c22 sys/src/cmd/ndb/dnsquery.c
--- a/sys/src/cmd/ndb/dnsquery.c Fri Aug 23 21:39:20 2019 +0200
+++ b/sys/src/cmd/ndb/dnsquery.c Fri Aug 30 10:20:33 2019 +0200
@@ -58,7 +58,7 @@
Biobuf in;
Binit(&in, 0, OREAD);
- for(print("> "); lp = Brdline(&in, '\n'); print("> ")){
+ for(fprint(2, "> "); lp = Brdline(&in, '\n'); fprint(2, "> ")){
n = Blinelen(&in) -1;
while(isspace(lp[n]))
lp[n--] = 0;
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2019-08-30 9:13 dnsquery(8): prompt on stderr vp
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