Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > gnu.bash.bug > #15806

Re: trap: interactive bash exits on resending SIGINT twice

Path csiph.com!xmission!news.snarked.org!news.linkpendium.com!news.linkpendium.com!panix!usenet.stanford.edu!not-for-mail
From Chet Ramey <chet.ramey@case.edu>
Newsgroups gnu.bash.bug
Subject Re: trap: interactive bash exits on resending SIGINT twice
Date Wed, 15 Jan 2020 15:12:08 -0500
Lines 20
Approved bug-bash@gnu.org
Message-ID <mailman.2647.1579119149.1979.bug-bash@gnu.org> (permalink)
References <9e22237a-78bf-c0bf-efcf-7f536cbed5ea@inlv.org> <ce14f978-21b9-3c8d-0845-4f0994617d0f@case.edu>
Reply-To chet.ramey@case.edu
NNTP-Posting-Host lists.gnu.org
Mime-Version 1.0
Content-Type text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding 8bit
X-Trace usenet.stanford.edu 1579119150 19158 209.51.188.17 (15 Jan 2020 20:12:30 GMT)
X-Complaints-To action@cs.stanford.edu
Cc chet.ramey@case.edu
To Martijn Dekker <martijn@inlv.org>, Bug reports for the GNU Bourne Again SHell <bug-bash@gnu.org>
Envelope-to bug-bash@gnu.org
DKIM-Signature v=1; a=rsa-sha256; c=relaxed/relaxed; d=case.edu; s=smtp-primary; t=1579119139; bh=B79XaRi5o6O0fb+WauKmUelRhSl278PyaI4fqM1mdXE=; h=Reply-To:Cc:Subject:To:References:From:Message-ID:Date: MIME-Version:In-Reply-To:Content-Type:Content-Transfer-Encoding; b=vx4GXyrwm39KeTCy47sKn/+M0ya1ifkif2JAw3tDnDOuGiB4lbZislYMfi/5Quz6+5 y5IG6bDIbA4WARPls1vfZZhYSIJ12kEBmob5SQOUWlZE7nV5wxRq47YGCDBYR2AM0Qy zvx+Lg1/6weB2iVcYN7WUEvpJ6Xv38LAcWBewe344hT3lJT++JJcZ0yIU00SCSteLQI FK8SdOS0X5X+WM3teavTZvRrZ5gJz3mhrR+X9JH10oqfJfSNtm0HPssmgW/4usplddn UN9z9SwWPTDF9iqiMrvvedxMUAXtaImfEz/2FjA5SFQmttJR+xZi4hQH9dnJmLj6gvo EDhILhRw==
DKIM-Signature v=1; a=rsa-sha256; c=relaxed/relaxed; d=case.edu; s=smtp-primary; t=1579119134; bh=7lGVKajUWNuI7Er2rZPvnwDN90YN+TLQkogGs62dRpo=; h=Reply-To:Cc:Subject:To:References:From:Message-ID:Date: MIME-Version:In-Reply-To:Content-Type:Content-Transfer-Encoding; b=40SpqegcS9SRLqp9QUrU2IWpc9TjmplnhwNZhPSi9jqnulXshVHehbaG4c3fgcy0pw qA+p0UcFX7182yEbh25RNxIzXpKsSLAY34pYNG/72ulFkdB526VvOq8ZAP0cwFZ6vMZ 4u2ivf4nNK8BIgaee3KXT/ioGnXt9nTmiWRSIa0hgL57CZIj3KNGCFuyxg1nnL64257 xzcjjDy/5y51HFcRzOn3y5QBc5gpb2YK6fjfjs5BYeh6p7byprMfmCa548F2ecz/P77 NGC5y9uIAG97mK0O6KY+qMtqXypG6n0zC6ufY/ttEr5XDCQa2TsmoCpoaSsdMxSjXhH MTxEy+iQ==
User-Agent Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:68.0) Gecko/20100101 Thunderbird/68.3.1
In-Reply-To <9e22237a-78bf-c0bf-efcf-7f536cbed5ea@inlv.org>
Content-Language en-US
X-Junkmail-Status score=7/90, host=mpv4-2015.case.edu
X-Junkmail-PrAS-Raw score=7/90, refid=2.7.2:2020.1.15.192118:17:7.944, ip=, rules=DKIM_SIGNATURE, __HAS_REPLYTO, __HAS_CC_HDR, __SUBJ_REPLY, __BOUNCE_CHALLENGE_SUBJ, __BOUNCE_NDR_SUBJ_EXEMPT, __SUBJ_ALPHA_END, __TO_MALFORMED_2, __TO_NAME, __TO_NAME_DIFF_FROM_ACC, __HAS_REFERENCES, __REFERENCES, __HAS_FROM, FROM_EDU_TLD, __HAS_MSGID, __SANE_MSGID, DATE_TZ_NA, __USER_AGENT, __MOZILLA_USER_AGENT, __MIME_VERSION, __IN_REP_TO, __CT, __CT_TEXT_PLAIN, __CTE, __REPLYTO_SAMEAS_FROM_ADDY, __REPLYTO_SAMEAS_FROM_ACC, __FROM_DOMAIN_IN_ANY_CC1, __FROM_DOMAIN_IN_ANY_CC2, __REPLYTO_SAMEAS_FROM_DOMAIN, __DKIM_ALIGNS_1, __DKIM_ALIGNS_2, __ANY_URI, __URI_MAILTO, __URI_WITH_PATH, __URI_NO_WWW, __HIGHBITS, __CP_URI_IN_BODY, __FRAUD_MONEY_CURRENCY_DOLLAR, __SUBJ_ALPHA_NEGATE, __URI_IN_BODY, __URI_NOT_IMG, __MAIL_CHAIN, __FORWARDED_MSG, __BODY_NO_MAILTO, __NO_HTML_TAG_RAW, BODY_SIZE_600_699, BODYTEXTP_SIZE_3000_LESS, __MIME_TEXT_P1, __MIME_TEXT_ONLY, [TRUNCATED], so=2010-03-03 19:42:08, dmn=2016-08-03-0138
X-detected-operating-system by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] [fuzzy]
X-Received-From 129.22.103.195
X-BeenThere bug-bash@gnu.org
X-Mailman-Version 2.1.23
Precedence list
List-Id Bug reports for the GNU Bourne Again SHell <bug-bash.gnu.org>
List-Unsubscribe <https://lists.gnu.org/mailman/options/bug-bash>, <mailto:bug-bash-request@gnu.org?subject=unsubscribe>
List-Archive <https://lists.gnu.org/archive/html/bug-bash>
List-Post <mailto:bug-bash@gnu.org>
List-Help <mailto:bug-bash-request@gnu.org?subject=help>
List-Subscribe <https://lists.gnu.org/mailman/listinfo/bug-bash>, <mailto:bug-bash-request@gnu.org?subject=subscribe>
X-Mailman-Original-Message-ID <ce14f978-21b9-3c8d-0845-4f0994617d0f@case.edu>
X-Mailman-Original-References <9e22237a-78bf-c0bf-efcf-7f536cbed5ea@inlv.org>
Xref csiph.com gnu.bash.bug:15806

Show key headers only | View raw


On 1/14/20 11:24 AM, Martijn Dekker wrote:
> Setting the following trap makes an interactive bash (any version) exit on 
> issuing SIGINT:
> 
> trap 'trap "true" INT; kill -s INT $$; trap - INT; kill -s INT $$' INT
> #     ^^^^^^^^^^^^^^^ eat signal       ^^^^^^^^^^ unset trap
> 
> After setting that trap, pressing Ctrl+C, or otherwise causing SIGINT to be 
> sent, causes an interactive bash to exit.

Thanks for the report.

Chet


-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
		 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/

Back to gnu.bash.bug | Previous | Next | Find similar


Thread

Re: trap: interactive bash exits on resending SIGINT twice Chet Ramey <chet.ramey@case.edu> - 2020-01-15 15:12 -0500

csiph-web