clear - to clear previous cmnds

pwd - to know where uhh r

cd .. - one lvl up

cd ../.. - two lvl up

cd $home. - for return back to home

cd ../../.. - direct 3 lvl up

cd ~ for direct home

history - to see how many cmnds uhh have ran

ls. -- to check what things are inside where uhh r

ls -l. To know info of sub files

ls -lh same info...size in kb

ls -al. Same info...also show hidden files

ls -rl

cd /sdcard && ls. - to go inside n check what inside

cd /sdcard && ls -1 plus info

mkdir dir1. - for creating folder or directory

mv dir2 dir1. - to move directory to dir 1

cp ~r dir2 dir1. - to copy dir2 to dir1

rm ~rf dr2. To dlt direc...

....yhn se to me kuch vdo dekhkr seekhrhi thi iske phle wala hi hoga