UNIX リダイレクション

date
dotinstall:~ $ echo ‘cal’ > commands.txt
dotinstall:~ $ cat commands.txt
cal
dotinstall:~ $ echo ‘date’ >> commands.txt
dotinstall:~ $ cat commands.txt
cal
date
dotinstall:~ $ /bin/ash < commands.txt December 2022 Su Mo Tu We Th Fr Sa 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Tue Dec 27 20:04:43 JST 2022 dotinstall:~ $ /bin/ash < commands.txt > results.txt
dotinstall:~ $ cat results.txt
December 2022
Su Mo Tu We Th Fr Sa
1 2 3
4 5 6 7 8 9 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29 30 31

Tue Dec 27 20:05:01 JST 2022
dotinstall:~ $ rm ‘
>