#ls -a ; du -hs #ls -a bogusdir && du -hs

#make dep && make clean && make bzImage && make modules && make modules_install && make install

#gqview &

#ls -a ; du -hs #ls -a bogusdir && du -hs

#make dep && make clean && make bzImage && make modules && make modules_install && make install

#gqview &

#jobs
[1] Running gqview &

#gqview

<CTRL z>

[2] Stopped gqview

#bg
[2] gqview &

#command &>/dev/null &

#locate README.mouse

#less $(locate README.mouse)

#pidof rob
567

#kill 567

#kill `pidof rob`

#rm *.bak

#rm *[!6]*.bak

#ls *.????

#rm *[!4]?.*

#ls [13]*

#ls *[3-8]?.*

#rm !*

rm

rm: too few arguments

#find . -name [1-9]* -print

find: paths must precede expression

#find . -name '[1-9]*' -print

./346.bak

./124.bak

./583.bak

./311.bak~

#ls \!* 或 ls '!'*
!56.bak

#ls -l │ less

#rpm -qa │ grep ^x │ less

#ls > dirlist

#sort < dirlist > sdirlist

#ls │ sort > sdirlist

#echo "string" >> file

#command < file1 > file1

#command < file1 >> file1