perl signal handler - SERP Analysis

https://www.perl.com/article/37/2013/8/18/Catch-and-Handle-Signals-in-Perl/

https://perldoc.perl.org/variables/%25SIG

https://stackoverflow.com/questions/60814220/how-to-manage-myself-sigint-and-sigterm-signals

https://www.oreilly.com/library/view/perl-cookbook/1565922433/ch16s18.html

https://www.oreilly.com/library/view/perl-in-a/0596002416/ch04s10.html

https://ltriant.github.io/2019/03/23/debugging-ev-and-perls-signal-handlers.html

https://perldoc.perl.org/sigtrap

https://www.perlmonks.org/?node_id=1232039

https://docstore.mik.ua/orelly/perl4/cook/ch16_18.htm

https://www.reddit.com/r/perl/comments/1bc2vj1/preventing_signals_from_reaching_a_process/

https://community.unix.com/t/perl-problems-with-signal-handler/247301

https://dinomite.net/blog/2010/09/27/signal-handling-in-perl/

https://users.cs.cf.ac.uk/dave/PERL/node116.html

https://www.cs.ait.ac.th/~on/O/oreilly/perl/cookbook/ch16_16.htm

https://voyager.deanza.edu/~perry/cis5411.html

https://www.xmodulo.com/catch-handle-interrupt-signal-perl.html

http://technopark02.blogspot.com/2020/12/perl-handling-signals.html

https://www.thecodingforums.com/threads/signal-handler-in-perl.902822/

https://perl.plover.com/classes/commands-perl/samples/slide028.html

https://tecfa.unige.ch/guides/perl/man/pod/perlipc/Signals.html

https://perlhelp.web.cern.ch/lib/Thread/Signal.html

https://docstore.mik.ua/orelly/perl3/cookbook/ch16_18.htm

https://affy.blogspot.com/p5be/ch13.htm

https://www.reddit.com/r/perl/comments/l0gly6/signal_handling_in_perl_catching_ctrlc/

https://docs.python.org/3/library/signal.html

https://rosettacode.org/wiki/Handle_a_signal

https://github.com/Perl/perl5/issues/15485

https://www.php.net/manual/en/function.pcntl-signal.php

https://perldoc.jp/docs/perl/5.8.8/perlipc.pod

https://community.unix.com/t/perl-trapping-exit/152737

https://news.ycombinator.com/item?id=11067232

https://www.tutorialspoint.com/python/python_signal_handling.htm

https://perldoc.jp/variable/%25SIG

https://www.geeksforgeeks.org/error-handling-in-perl/

https://www.slogical.co.jp/tech/perl_reg_hashsig.html

https://www.ibm.com/docs/en/zos/2.5.0?topic=signals-signal-handlers

https://www.cnblogs.com/f-ck-need-u/p/10386248.html

https://pointoht.ti-da.net/e8097574.html

https://perl.apache.org/docs/2.0/user/handlers/http.html

https://en.wikipedia.org/wiki/List_of_programming_languages_by_type

https://help.splunk.com/en/splunk-cloud-platform/search/spl2-search-reference/evaluation-functions/text-functions

https://www.hcltech.com/careers/opportunities

https://www.wesleyanargus.com/scholarship/u20IUI/2351943/gtkprogramminginc.pdf

https://www.bairesdev.com/blog/top-programming-languages/

https://en.wikipedia.org/wiki/Question_mark

https://wvmn.groups.io/g/main/topics?page=28&after=1643217170261875622

https://www.gnu.org/s/libc/manual/html_node/Signals-in-Handler.html

https://www.wesleyanargus.com/fetch.php/u20IUI/2351943/gtkprogramminginc.pdf

https://www.asc-csa.gc.ca/eng/jobs/search-internships.asp

https://exercism.org/tracks/python/concepts/basics

https://www.geeksforgeeks.org/linux-unix/echo-command-in-linux-with-examples/

https://careers.cdac.in/post-details/ECT8ED

https://www.tutorialspoint.com/python/index.htm

https://www.104.com.tw/company/1a2x6bm42t

https://perl.apache.org/docs/2.0/user/handlers/protocols.html

http://jeremy.zawodny.com/blog/

https://web.mit.edu/adamrose/Public/googlelist

https://www.pakwheels.com/new-cars/prince/pearl/

https://cpanel.wagmtv.com/index.jsp/Resources/T44765/TailsOperatingSystem.pdf

https://www.cs.princeton.edu/courses/archive/spring25/cos226/assignments/autocomplete/files/words-333333.txt

https://web.mit.edu/~ecprice/Public/wordlist.ranked

https://www.gnu.org/s/libc/manual/html_node/Basic-Signal-Handling.html

https://b.hatena.ne.jp/q/Ruby%7C%20?date_begin=2012-09-09&sort=recent&safe=on&date_end=2014-01-21&target=title&users=3

https://cs162.org/static/hw/hw-shell/docs/signal-handling/

https://www.youtube.com/watch?v=j_lS6OzRoaw