THE SECOND QUESTION 
 joubran-VirtualBox:~ 1225 $ mkdir MyNEWFOLDER
 joubran-VirtualBox:~ 1226 $ cd MyNEWFOLDER/
 joubran-VirtualBox:~/MyNEWFOLDER 1227 $ touch file{1,2,3,4,5,6,7,8,9,10}_{a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z}
 joubran-VirtualBox:~/MyNEWFOLDER 1229 $ find . -name "*x" -exec sed '1s/ /HelloLinux/g' {} \;
 joubran-VirtualBox:~/MyNEWFOLDER 1229 $ cd 
 joubran-VirtualBox:~ 1230 $ touch creater.sh
 joubran-VirtualBox:~ 1231 $ chmod u+x creater.sh
 joubran-VirtualBox:~ 1232 $ nano creater.sh
 joubran-VirtualBox:~ 1233 $ cat creater.sh
 #!/bin/bash

 for n in a b c d e f g h i j k l m n o p q r s t u v w x y z ;
 do
 if [ ! -d "$n" ]; then
 mkdir $n
 fi
 done
 joubran-VirtualBox:~ 1234 $ ./creater.sh
 joubran-VirtualBox:~ 1235 $ touch mover.sh
 joubran-VirtualBox:~ 1236 $ chmod u+x mover.sh
 joubran-VirtualBox:~ 1237 $ nano mover.sh
 joubran-VirtualBox:~ 1238 $ cat mover.sh
 #!/bin/bash

 for n in a b c d e f g h i j k l m n o p q r t s u v w x y z ;
 do
 if [ -d "$/home/joubran/NEWFOLDER/file{1,2,3,4,5,6,7,8,9,10}_$n" ]; then
 mv /home/joubran/NEWFOLDER/file{1,2,3,4,5,6,7,8,9,10}_$n /home/joubran/$n
 fi
 done
 
 joubran-VirtualBox:~ 1239 $ ./mover.sh
 joubran-VirtualBox:~ 1240 $ find ./[abcdefghijklmnopqrtsuvwxyz] -name "*[34]*" -exec rm {} \;
 joubran-VirtualBox:~ 1241 $ ls
2024-06-24   bin         Desktop           f        it is my name  month        NEWFOLDER  p         search_result  Videos
2024-06-28   Bin         dimasympolic.out  fold     j              mover.sh     newww      Pictures  september      w
a            c           directory         folder5  k              Music        noexis     projects  t              x
a_reports    creater.sh  Documents         g        l              MyNEWFOLDER  november   Public    Templates      y
b            d           doo               h        m              n            o          q         tmp            z
backups      dd          Downloads         ham      mansour        new          october    r         u
backup-test  december    e                 i        mkdir          newdir       operating  s         v
 joubran-VirtualBox:~ 1242 $ cd e
 joubran-VirtualBox:~/e 1243 $ ls
file10_e  file1_e  file2_e  file5_e  file6_e  file7_e  file8_e  file9_e

