Unix and Shell Scripting all Cognizant Handson Solutions

In this post we covered all the Unix & Shell Scripting Cognizant Handson solutions tekstac.

Introduction to Unix

List-of-Files-2

ls -r

List-of-Files-3

ls -m

File System

Copy File 5

cp livingthings/birds/flyingbirds/eider livingthings/animals/mammals/

Copy File 6

cp cp livingthings/birds/flyingbirds/eagle livingthings/birds/nonflyingbirds/

Copy Directory

cp -r livingthings/birds livingthings/plants/

Copy Complete Directory

cp -r mydir/colors/basic mydir/colors/blended  mydir/shape/

Move File 1

mv mydir/animals/mammals/dog mydir/shape

Move File 2

mv mydir/animals/reptiles/snakes mydir/shape

Filters

Find String 7

grep "^echo" teknoscript.txt

Find String 8

grep "[^#]" teknoscript.txt

# grep -v "^#" teknoscript.txt

Grep Command – 1

grep ";$" employee.txt

Grep Command – 2

grep -v ";$" employee.txt

Bourne Shell

Script – Pattern Printing

rows=5
for((i=1; i<=rows; i++))
do
  for((j=1; j<=i; j++))
  do
    echo -n "$i"
  done
  echo
done

ShellScripting

while read line
do
        if [[ $line =~ Male$ ]]
        then
                printf '%s\n' $line >> male_nominee.txt
        fi
        if [[ $line =~ Female$ ]]
        then
                printf '%s\n' $line >> female_nominee.txt
        fi
done < names.txt

Script Counting

file="$1"
w=`cat $file | wc -w`
c=`cat $file | wc -c`
l=`grep -c "." $file`
echo "Number of characters in $file is $c"
echo "Number of words in $file is $w"
echo "Number of lines in $file is $l"