1<- Back	/phlog	kroovy.de	70
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ibsleep - Breakable Sleep	Err	kroovy.de	70
i========================	Err	kroovy.de	70
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ibsleep is a sleep that breaks as soon as you press 'b'.	Err	kroovy.de	70
iIt makes clever use of the -t (timeout) and -n (read n bytes) parameters	Err	kroovy.de	70
iof the bash built-in: read.	Err	kroovy.de	70
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ibsleep can be used to quickly test something and chain a quick undo	Err	kroovy.de	70
icommand right after you initial command.	Err	kroovy.de	70
i	Err	kroovy.de	70
iexample usage:	Err	kroovy.de	70
i      echo "do something"; bsleep; echo "quickly undo"	Err	kroovy.de	70
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iThe other day I was tinkering with an iptables ruleset and needed exactly	Err	kroovy.de	70
ithat. So quickly hacked it quick'n'dirty (originally as a one-liner).	Err	kroovy.de	70
i	Err	kroovy.de	70
iThe Bash-Shellfunction:	Err	kroovy.de	70
i	Err	kroovy.de	70
i      function bsleep () {	Err	kroovy.de	70
i              local c=1;	Err	kroovy.de	70
i              local INPUT;	Err	kroovy.de	70
i              while [ ! "$INPUT" == "b" ]; do	Err	kroovy.de	70
i                      printf "$c "; # comment out if you prefer silent	Err	kroovy.de	70
i                      c=$(($c+1));	Err	kroovy.de	70
i                      read -s -n1 -t1 INPUT;	Err	kroovy.de	70
i              done;	Err	kroovy.de	70
i              printf "\n";	Err	kroovy.de	70
i      }	Err	kroovy.de	70
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i                              z	Err	kroovy.de	70
i                             z	Err	kroovy.de	70
i                              Z	Err	kroovy.de	70
i                    .--.  Z Z	Err	kroovy.de	70
i                   / _(c\   .-.     __	Err	kroovy.de	70
i                  | / /  '-;   \'-'`  `\______	Err	kroovy.de	70
i                  \_\/'/ __/ )  /  )   |      \--,	Err	kroovy.de	70
i                  | \`""`__-/ .'--/   /--------\  \	Err	kroovy.de	70
i                   \\`  ///-\/   /   /---;-.    '-'	Err	kroovy.de	70
i             jgs                (________\  \	Err	kroovy.de	70
i                                          '-'	Err	kroovy.de	70
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hasciinema	URL:https://asciinema.org/a/8zUsN5SjoixAZjRvcOURs0lG2	kroovy.de	70
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iP.S.:	Err	kroovy.de	70
iIn general I strife to get rid of bashisms in my daily doing. I noticed	Err	kroovy.de	70
ithat the built-in read functions of some POSIX shells (e.g. like ksh) do	Err	kroovy.de	70
inot provide -t or -n.	Err	kroovy.de	70
iSo I aim to write a little bsleep-program in C in the future.	Err	kroovy.de	70
i	Err	kroovy.de	70
iUpdate:	Err	kroovy.de	70
12024-06-30 - bsleep (rewritten in C)	/phlog/bsleep-c.gph	kroovy.de	70
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