1. Prepared by, Mr. Satish Pise
Experiment No 2
Prepared by,
Mr. Satish Pise

2. Grep Command $man grep Syntax - grep [OPTIONS] PATTERN [FILE...]
How do I use grep command to search a file?
Create text file as follows:
$cat > demofile
hello world!
cartoons are good
especially toon like tom (cat)
what
the number one song
12221
they love us
I too
 save file with filename as demofile
After saving file, issue following command,
$ grep "too" demofile

3. Use grep recursively - # grep -r "192. 168. 1
Use grep recursively - # grep -r " " /etc/ Use grep to search words only - # grep -w "boo" demofile Use grep to search 2 different words - # egrep -w 'word1|word2' demofile Case insensitive search using grep -i # grep -i "the" demo_file

4. Count line when words has been matched - # grep -c 'word' demofile # grep -c "go" demofile # grep -n 'root' /etc/passwd Display N lines around match # grep -C 2 "Example" demofile Invert match using grep -v # grep -v "go" demofile Display only the file names which matches the given pattern # grep -l this demo_*

5. Archiving Files (tar command)
Tar Usage and Options
c – create a archive file.
x – extract a archive file.
v – show the progress of archive file.
f – filename of archive file.
t – viewing content of archive file.
j – filter archive through bzip2.
z – filter archive through gzip.
r – append or update files or directories to existing archive file.
W – Verify a archive file.
wildcards – Specify patters in unix tar command.

6. Archiving Files (tar command) - Create first folder cse
#man tar
Create tar Archive File
# tar -cvf cse.tar /home/cse/
c – Creates a new .tar archive file.
v – Verbosely show the .tar file progress.
f – File name type of the archive file.
Untar tar Archive File
# tar -xvf cse.tar
List Content of tar Archive File
# tar -tvf cse.tar
Untar files in specified Directory
# tar -xvf cse.tar -C /home/cse

7. Create tar. gz Archive File # tar cvzf cse. tar
Create tar.gz Archive File # tar cvzf cse.tar.gz /home/cse or List Content tar.gz Archive File # tar -tvf cse.tar.gz Uncompress tar.gz Archive File # tar -xvf cse.tar.gz

8. Create tar. bz2 Archive File # tar cvfj cse. tar
Create tar.bz2 Archive File # tar cvfj cse.tar.bz2 /home/cse List Content tar.bz2 Archive File # tar -tvf cse.tar.bz2 Uncompress tar.bz2 Archive File # tar -xvf cse.tar.bz2