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vi hello
ls
date
whoami
pwd
date;whoami;pwd
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#this script is display current user,time and path
#it is display current time
echo "current time is"
date
#it is display current user
echo "current user is"
whoami
#it is display current path
echo "current path is"
pwd
Ö´ÐÐbash hello
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ls -l
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Root ×÷ΪËùÓÐÕß  ¿´Ç°ÈýÏî rwx
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ls -l hello
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echo $x
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echo $SHELL
echo $PATH
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