1.find
a. find . -iname "filetofind"
i= search case insensitively
name= search by name
The portion indicated by double inverted commas is the file you need to find.
. (dot) refers to current directory
b. If you need to find file that are accessed in time interval within 1 day.
find . -iname "*" -atime -1
* are wild cards they can replace any keyword or name you want to find
c. If you need to find files that are modified in time interval less than 1 day.
find . -iname "*" -mtime -1
mtime= modify time
2. rm filename
a. rm filename (use this command to remove file)
b. rm -r filename (use this command to remove directory)
Since we cant remove directories simply, so using argument -r with rm removes file recursively.
3. mv filename
a. mv filename ./Desktop
for full details of mv command refer here