linux_lab1.sh

#!/bin/bash

#task1
mkdir test
cd test

#task2
ls -a --classify  /etc > list

#task3
echo | ls -la /etc | grep -c  ^d >> list
echo | ls -1A /etc | wc -l >> list

#task4
mkdir links
cd links

#task5
ln -fd ../list list_hlink

#task6
ln -fs ../list list_slink

#task7
ls -l list_hlink | awk {'print $2'}
ls -l list_slink | awk {'print $2'}
ls -l ../list | awk {'print $2'}

#task8
echo | cat ../list | wc -l >> list_hlink

#task9
cmp -s list_hlink list_slink && echo "task9: YES"

#task10
mv -f ../list ../list1

#task11
cmp -s list_hlink list_slink && echo "task11: YES"

#task12
cd ~
ln test/links/ links_hlink

#task13
ls -a /etc | grep ".conf" > list_conf

#task14
ls -FR /etc | grep ".d/" > list_d

#task15
cat list_conf > list_conf_d
cat list_d >> list_conf_d

#task16
cd test
mkdir .sub

#task17
cp ../list_conf_d .sub

#task18
cp --backup ../list_conf_d .sub

#task19
ls -aFR

#task20
cd ~
man man >> man.txt

#task21
split -b 1K man.txt

#task22
mkdir test/man.dir/

#task23
mv -f x* test/man.dir/

#task24
cat test/man.dir/x* > test/man.dir/man.txt
rm -f test/man.dir/x*

#task25
cmp -s man.txt test/man.dir/man.txt && echo 'task25: YES'

#task26
echo 'someothertext' >> man.txt

#task27
diff -u  man.txt test/man.dir/man.txt > diff_man.txt

#task28
mv -f diff_man.txt test/man.dir/

#task29
patch -R test/man.dir/man.txt test/man.dir/diff_man.txt

#task30
cmp -s man.txt test/man.dir/man.txt && echo 'task30: YES' 

Output

2
1
2
task9: YES
.:
./
../
links/
list1
man.dir/
.sub/

./links:
./
../
list_hlink
list_slink@

./man.dir:
./
../
diff_man.txt
man.txt

./.sub:
./
../
list_conf_d
list_conf_d~
task25: YES
patching file test/man.dir/man.txt
task30: YES