云服务器在系统更新过程中挂住了
root@jikuai:~ # pkg-static upgrade -f
Updating FreeBSD repository catalogue...
[48/199] Extracting ghc-8.4.3_1: 100%
ignoring (possibly broken) abi-depends field for packages
root@jikuai:~ # jobs
[1] Running pkg-static upgrade -f
root@jikuai:~ # jobs
[1] Running pkg-static upgrade -f
root@jikuai:~ # fg
fg: No current job.
root@jikuai:~ # fg
fg: No current job.
root@jikuai:~ # bg
bg: No current job.
root@jikuai:~ # fg
fg: No current job.
root@jikuai:~ # jobs
[1] Running pkg-static upgrade -f
root@jikuai:~ # jobs 1
Usage: jobs [ -l ].
root@jikuai:~ # jobs -l
[1] 718 Running pkg-static upgrade -f
root@jikuai:~ # bg
bg: No current job.
root@jikuai:~ # jobs
[1] Running pkg-static upgrade -f
root@jikuai:~ # fg
fg: No current job.
root@jikuai:~ # fg
fg: No current job.
root@jikuai:~ # man bg
^C
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