Command terminal
1. To display file content
cat
head
tail
vi
note: vi is the text editor
2. make directory - mkdir
3. create new text file-
vi filename
it will open in the command terminal
write the content of the file and finally enter esc and :wq
4. To know the current working directory address
pwd
5. move file from one location to other
mv /filelocation/filename newlocation/
6. various ways of file listing
ls -r reverses the listing order
ls -s gives sizes of the files
ls -C lists files in col
ls -R recursively lists files in the current directories and all subdirectories
ls -p subdirectories
ls -a include all files including files whose names start with a period
ls -c list files by date of creation
ls -l list files in long form: links, owner, size. date and time of last change
7.Print my login name
whoiam
8. to display date
date
9. to alter system date
date -s '06/23/2009 10:30:00'
10. display calender
cal
11. display calender of particular month
cal 9 2011
12. display date of a day
date -d -fri
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