小编Ray*_*rth的帖子

$ echo "$?"
0
$ echo 'q' | dc || echo "$?"
1

为什么使用q退出dc被认为是错误？

（测试在Ubuntu 20.4上运行。）

/var/log/syslog 包含：

Jul 31 13:45:01 ray-desktop CRON[5667]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
Jul 31 13:45:50 ray-desktop org.gnome.Shell.desktop[1689]: [2036:2054:0731/134550.778035:ERROR:socket_stream.cc(219)] Closing stream with result -2
Jul 31 13:47:51 ray-desktop rasdaemon[695]:            <...>-35    [-41071872]     0.001327: mce_record:           2019-07-31 12:27:04 -0400 bank=8, status= 8c2001000001110b, corrected filtering (some unreported errors in same region) Generic CACHE Level-3 Generic Error, mci=Corrected_error Threshold based error status: green, mca=corrected filtering (some unreported errors in same region) Generic CACHE Level-3 Generic Error Large number of corrected …