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Write a bash script to demonstrate until loop which displays "While Loop Demo" and exits when key q is typed

Write a bash script to demonstrate until loop which displays "While Loop Demo" and exits when key q is typed

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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4) Write a bash script to demonstrate until loop which displays "While Loop Demo" and exits when key q is typed.

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[yyznana@toronto7670 ~]$ untill false; bash: untill: command not found... [yyznana@toronto7670 ~]$ until false; > do > printf "WHILE LOOP DEMO" > read -t 0.25 -N 1 input > if [[$input ="q"]] || [[$input ="Q" ]]; > then > echo > break > fi > done WHILE LOOP DEMObash: [[: command not found... Similar command is: '[' bash: [[ command not found... Similar command is: '[' WHILE LOOP DEMObash: [[: command not found... Similar command is: '[' bash: [[ command not found... Similar command is: '[' WHILE LOOP DEMObash: [[: command not found... Similar command is: '[' bash: [[ command not found... Similar command is: '['
Transcribed Image Text:[yyznana@toronto7670 ~]$ untill false; bash: untill: command not found... [yyznana@toronto7670 ~]$ until false; > do > printf "WHILE LOOP DEMO" > read -t 0.25 -N 1 input > if [[$input ="q"]] || [[$input ="Q" ]]; > then > echo > break > fi > done WHILE LOOP DEMObash: [[: command not found... Similar command is: '[' bash: [[ command not found... Similar command is: '[' WHILE LOOP DEMObash: [[: command not found... Similar command is: '[' bash: [[ command not found... Similar command is: '[' WHILE LOOP DEMObash: [[: command not found... Similar command is: '[' bash: [[ command not found... Similar command is: '['
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