Command:
$ select item in {a..z}; do echo $item ":" $REPLY; done
Result:
1) a 3) c 5) e 7) g 9) i 11) k 13) m 15) o 17) q 19) s 21) u 23) w 25) y
2) b 4) d 6) f 8) h 10) j 12) l 14) n 16) p 18) r 20) t 22) v 24) x 26) z
#?
User input:
1
Result:
a : 1
Showing posts with label Command prompt. Show all posts
Showing posts with label Command prompt. Show all posts
Monday, October 17, 2016
Bash (Unix shell): Changing Command Prompt
Command:
$ PS1="( ^ω^ ) "
Result:
( ^ω^ )
Command:
( ^ω^ ) PS1="$ "
Result:
$
$ PS1="( ^ω^ ) "
Result:
( ^ω^ )
Command:
( ^ω^ ) PS1="$ "
Result:
$
Bash (Unix shell): Select Menu Example: PS3
Command:
$ PS3="please select item > "; select item in "item1" "item2" "item3"; do if [ $REPLY = "q" ]; then break; fi; done;
Result:
1) item1
2) item2
3) item3
please select item >
User input:
1
Result:
please select item >
User input:
q
$ PS3="please select item > "; select item in "item1" "item2" "item3"; do if [ $REPLY = "q" ]; then break; fi; done;
Result:
1) item1
2) item2
3) item3
please select item >
User input:
1
Result:
please select item >
User input:
q
Bash (Unix shell): Command prompt (コマンドプロンプト)
Command:
$ read -p "Do something? "; if [ $REPLY == "y" ]; then echo yay; fi
Result:
Do something?
User input:
y
Result:
yay
$ read -p "Do something? "; if [ $REPLY == "y" ]; then echo yay; fi
Result:
Do something?
User input:
y
Result:
yay
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