文件

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which
ls
cd
du #show directory size
cat
less
head
tail
touch
mkdir
cp
mv
rm
ln
locate
find

用户

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useradd
passwd
userdel
su
groupadd
groupdel
groups
usermod
chgrp
chown
chmod
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yum update
yum upgrade
yum search
yum install
yum remove
apt
man
help
grep
sort
wc
uniq
cut

进程

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top
kill
&
nohup
bg
jobs
fg
systemd
systemctl

压缩解压

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gzip
zip
unzip
zcat
zless
zmore
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wget
make
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host
ssh
rsync
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reboot
poweroff
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