diff --git a/ex01/hello_world.sh b/ex01/hello_world.sh
new file mode 100755
index 0000000..084fa34
--- /dev/null
+++ b/ex01/hello_world.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+if ! [ -z $1  ]; then
+  echo "Hello, $1!"
+else
+  echo "Hello, World!"
+fi
diff --git a/ex02/ex02.sh b/ex02/ex02.sh
new file mode 100755
index 0000000..2581942
--- /dev/null
+++ b/ex02/ex02.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+str=$( echo $1 | tr " " "\n" )
+for i in $str
+do
+  ls -R | grep -Fi $i || echo "the searched PATH is unexisting"
+done
diff --git a/ex03/ex03.sh b/ex03/ex03.sh
new file mode 100755
index 0000000..468c25d
--- /dev/null
+++ b/ex03/ex03.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+
+if [ -z $1 ]; then
+  exit 1
+fi
+
+if ! [ -z $1 ]; then
+  touch .f
+  for i in "${@:2}"
+  do
+    grep -in $i $1 > .f
+    n=$(cat .f | wc -l)
+    echo "$i $n"
+    awk -F: '{print $1}' .f
+  done
+  rm .f
+fi
diff --git a/ex04/ex04.sh b/ex04/ex04.sh
new file mode 100755
index 0000000..d401457
--- /dev/null
+++ b/ex04/ex04.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+if [ -z $1 ] || [ -z $2 ]; then
+	exit 1
+fi
+
+echo $2 | cut -d'/' -f 2
+grep -in $1 $2 | cut -d : -f 1
diff --git a/ex05/ex05.sh b/ex05/ex05.sh
new file mode 100755
index 0000000..0d21d2f
--- /dev/null
+++ b/ex05/ex05.sh
@@ -0,0 +1,31 @@
+#!/bin/bash
+
+if [ -z $2 ]; then
+	echo "0"
+	exit 0
+fi
+
+summ=0
+
+for i in $@
+do
+  if [ "$1" == "-s" ]; then
+    summ=$(echo "$summ + $i" | bc)
+  elif [ "$1" == "-m" ]; then
+    summ=$(echo "$summ + $i" | bc)
+  elif [ "$1" == "-e" ]; then
+    [ $((i%2)) -eq 0 ] && summ=$(echo "$summ + $i" | bc)
+  elif [ "$1" == "-o" ]; then
+    [ $((i%2)) -ne 0 ] && summ=$(echo "$summ + $i" | bc)
+  else
+    echo "Error.."
+    exit 1
+  fi
+done
+
+if [ "$1" == "-m" ]; then
+  shift 1
+  summ=$(echo $(( "$summ / $#" )))
+fi
+
+echo "$summ"
diff --git a/ex06/ex06.sh b/ex06/ex06.sh
new file mode 100755
index 0000000..480a84c
--- /dev/null
+++ b/ex06/ex06.sh
@@ -0,0 +1,14 @@
+#!/bin/bash
+map() {
+  arg=$1
+  shift
+	for i in "$@"
+	do
+		shift
+		eval "$arg $i"
+	done
+}
+
+if [ $1 ]; then
+  map $@
+fi
diff --git a/ex07/ex07.sh b/ex07/ex07.sh
new file mode 100755
index 0000000..d70aad3
--- /dev/null
+++ b/ex07/ex07.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+
+if [ -z "$1" ] || [ "$1" -eq 0 ]; then
+  exit 1
+fi
+
+answer=$(head "-$1" resourses/surnames.txt | grep -v 'Q-Chem' | sed "s/\.//g ; s/\-//g" | cat )
+
+if [[ $answer ]]; then
+  echo "$answer"
+else
+  echo ''
+fi
diff --git a/ex07/test_ex07.sh b/ex07/test_ex07.sh
index 2980d2a..9f838b8 100755
--- a/ex07/test_ex07.sh
+++ b/ex07/test_ex07.sh
@@ -21,13 +21,13 @@
 }
 
 @test "Test on 0 lines returns error" {
-  run ex07.sh 0
+  run bash ex07.sh 0
 
   [ "$status" -eq 1 ]
 }
 
 @test "Test on 2 lines return empty string" {
-  run ex07.sh 2
+  run bash ex07.sh 2
 
   [ "$status" -eq 0 ]
   [ "$output" = $'' ]
diff --git a/ex08/ex08.sh b/ex08/ex08.sh
new file mode 100755
index 0000000..894705f
--- /dev/null
+++ b/ex08/ex08.sh
@@ -0,0 +1,21 @@
+#!/bin/bash
+
+if [ -z $1 ] ||  [ $# -gt 1 ] ; then
+  echo "Too many(few) arguments"
+  exit 1
+fi
+
+if [ ! -f "$1" ]; then
+  echo "Error.."
+  exit 1
+fi
+
+answer=""
+words=( zeroes ones twoes threes fours fives sixs sevens eights nines )
+wlen=${#words[@]}
+for (( i=0; i<${wlen}; i++ ))
+do
+  answer+=$(grep -o "$i" $1 | wc -l)
+  answer+=" ${words[$i]}, "
+done
+echo "$answer" | sed 's/..$//'
diff --git a/ex08/test_ex08.sh b/ex08/test_ex08.sh
index 3ab85ed..76a87a4 100755
--- a/ex08/test_ex08.sh
+++ b/ex08/test_ex08.sh
@@ -5,7 +5,7 @@
 
  [ "$status" -eq 0 ]
  [ "$output" = "10 zeroes, 13 ones, 4 twoes, 7 threes, 3 fours, 3 fives, 0 sixs, 0 sevens, 0 eights, 1 nines" ]
-
+}
 
 @test "Too many arguments" {
  run bash ex08.sh resources/digitfile.txt digit.txt
@@ -15,16 +15,13 @@
 }
 
 @test "Too few arguments" {
- run bash ex08.sh 
- 
+ run bash ex08.sh
  [ "$status" -eq 1 ]
  [ "$output" = "Too many(few) arguments" ]
 }
 
 @test "File doesn't exist" {
  run bash ex08.sh resources/digitfile
- 
  [ "$status" -eq 1 ]
  [ "$output" = "Error.." ]
 }
-
diff --git a/ex09/ex09.sh b/ex09/ex09.sh
new file mode 100755
index 0000000..0a4fb56
--- /dev/null
+++ b/ex09/ex09.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+
+if [ -z $1 ] || [ -z $2 ]; then
+  exit 1
+fi
+
+if [ "$1" = "-u" ] || [ "$1" = "--url" ]; then
+  grep -Po '(^|\t)https:[A-Za-z0-9\/\.]+' $2
+elif [ "$1" = "-e" ] || [ "$1" = "--email" ]; then
+  grep -Po '(^|\t)[A-Za-z0-9\.]+@[A-Za-z0-9\.]+\.[A-Za-z0-9\.]+' $2
+else
+  exit 1
+fi
diff --git a/ex09/test_ex09.sh b/ex09/test_ex09.sh
index 7dad67c..4019883 100755
--- a/ex09/test_ex09.sh
+++ b/ex09/test_ex09.sh
@@ -2,28 +2,28 @@
 
 @test "Find emails in file without emails" {
   run bash ex09.sh -e resources/email1.txt
-  
+
   [ "$status" -eq 1 ]
   [ "$output" = ""  ]
 }
 
 @test "Find emails in file with emails" {
   run bash ex09.sh -e resources/email2.txt
-  
+
   [ "$status" -eq 0 ]
   [ "$output" = "craig@bbhost.us"  ]
 }
 
 @test "Find urls in file without urls" {
   run bash ex09.sh -u resources/url1.txt
-  
+
   [ "$status" -eq 1 ]
   [ "$output" = ""  ]
 }
 
 @test "Find urls in file with urls" {
   run bash ex09.sh -u resources/url2.txt
-  
+
   [ "$status" -eq 0 ]
   [ "$output" = "https://en.emailfake.com/usjima1129.ga/craig
 https://mail.google.com/mail/u/0/"  ]
@@ -31,14 +31,14 @@ https://mail.google.com/mail/u/0/"  ]
 
 @test "Find emails in file with emails and urls" {
   run bash ex09.sh -e resources/emailurl.txt
-  
+
   [ "$status" -eq 0 ]
   [ "$output" = "craig@bbhost.us"  ]
 }
 
 @test "Find urls in file with emails and urls" {
   run bash ex09.sh -u resources/emailurl.txt
-  
+
   [ "$status" -eq 0 ]
   [ "$output" = "https://en.emailfake.com/usjima1129.ga/craig
 https://mail.google.com/mail/u/0/" ]
@@ -46,7 +46,7 @@ https://mail.google.com/mail/u/0/" ]
 
 @test "Test long flag for email" {
   run bash ex09.sh --email resources/emailurl.txt
-  
+
   [ "$status" -eq 0 ]
   [ "$output" = "craig@bbhost.us" ]
 }
@@ -54,7 +54,7 @@ https://mail.google.com/mail/u/0/" ]
 
 @test "Test long flag for url" {
   run bash ex09.sh --url resources/emailurl.txt
-  
+
   [ "$status" -eq 0 ]
   [ "$output" = "https://en.emailfake.com/usjima1129.ga/craig
 https://mail.google.com/mail/u/0/" ]
diff --git a/ex10/ex10.sh b/ex10/ex10.sh
new file mode 100755
index 0000000..f3fd7bb
--- /dev/null
+++ b/ex10/ex10.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+if [ ! -f "$1" ];then
+  exit 1
+fi
+
+for i in $@
+do
+  echo "$(awk 'END{print NR}' $i) $i"
+done