常用Shell命令

ls /bin/[a-c]*
ls /bin/[!a-o]
ls /bin/[^a-o]
date;who
clear
date
ls > filename
date >> myfiles
cat < myfiles
cat > sname
sort < sname > sorted_names
tr "[a-z]" "[A-Z]" < sname > cap_names
sort > new_sorted_names < sname
ls | more
who | sort
who | sort > user_list
who | wc -l
ls -l | wc  -l  
who | grep raju
tail +20 < hotel.txt | head -n30 >hlist
sort < sname | uniq > u_sname
kill  1012
killall httpd
ps -ag
kill 0
ls / -R | wc -l &
ps aux
ps ax | grep httpd
top
pstree
bc