Several Linux Command Lines

1. $ (cd Ti/Davinci/ && make)
   - jump to a directory and execute a command, and then jump back to current directory.
2. $ ls –ltr | tail –n5
   - 5 newest files only
3. $ ctrl-L
   - clear terminal screen, or use ‘clear’
4. $ mkdir –p dir1/dir2/dir3, $mkdir –p work/{d1,d2}/{d3,d4}
   -create directory including intermediate directories.
5. $ cp filename.txt{,.bak}, or $mv filename{.dat,.bak}
   -backup or rename
6. $ grep --color=auto
   -show pattern in Red
7. $ ps aux | grep “[s]peed”
8. $ rm –rf `find . –type d –name .svn`
   -remove all subversion files.
9. $ sed -n 5p
   - show one specific line if you know what line it is.
   

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