Practical GNU/Linuxsagarun.fedorapeople.org/talks/Practical_Linux_0.pdf · Practical GNU/Linux Arun...

fud con4-6 November, 2011

Practical GNU/Linux

Arun S.A.G

FUDCon, Pune

November, 2011

Arun S.A.G (FUDCon, Pune) Intro to GNU/Linux Command Line November, 2011 1 / 27

Table Of Contents

1 Shell

2 Basic commands

3 Permissions

4 Text editors

5 Search for �les

6 Grep/Egrep

7 Di�

9 Download �lesWgetCURL

10 Redirecting things

Introduction To Shell

Extremely Powerful

csh,bash,zsh

Changing your login shell

Extremely Powerful

csh,bash,zsh

Extremely Powerful

csh,bash,zsh

Table Of Contents

1 Shell

2 Basic commands

3 Permissions

4 Text editors

5 Search for �les

6 Grep/Egrep

7 Di�

Basic Commands

~ and /

. (dot) and .. (dotdot)

tab-completion

command history

Escaping from 'Trap': Ctrl+C, Ctrl+D and Ctrl+Z

Basic Commands

~ and /

tab-completion

command history

Basic Commands

~ and /

tab-completion

command history

Basic Commands

~ and /

tab-completion

command history

Basic Commands

~ and /

tab-completion

command history

Basic Commands

~ and /

tab-completion

command history

Basic Commands

~ and /

tab-completion

command history

Basic Commands

~ and /

tab-completion

command history

Table Of Contents

1 Shell

2 Basic commands

3 Permissions

4 Text editors

5 Search for �les

6 Grep/Egrep

7 Di�

Permissions in Linux

ls -l - View permissions

chmod - Modify permissions

Permissions in Linux

ls -l - View permissions

chmod - Modify permissions

Table Of Contents

1 Shell

2 Basic commands

3 Permissions

4 Text editors

5 Search for �les

6 Grep/Egrep

7 Di�

Real Programmers

Figure: http://xkcd.com/727/

Editors

Other editors

Editors

Other editors

Editors

Other editors

Table Of Contents

1 Shell

2 Basic commands

3 Permissions

4 Text editors

5 Search for �les

6 Grep/Egrep

7 Di�

Finding �les

�nd <path> <command> <name>

�nd . -name "*resume*"

�nd . -perm a=rwx,g=rwx,u=rwx

�nd . -name "*resume*" -exec ls -l \;locate

Finding �les

�nd . -name "*resume*" -exec ls -l \;

locate

Finding �les

Table Of Contents

1 Shell

2 Basic commands

3 Permissions

4 Text editors

5 Search for �les

6 Grep/Egrep

7 Di�

Searching in �les

grep <pattern> <�le>

grep "stack" tcp.c

grep "s[nmt]ck" tcp.c

grep "s.ack" tcp.c

grep "[0-9][0-9][0-9][0-9][0-9]" tcp.c

egrep "[0-9]{5}" tcp.c

egrep "hello{3}" tcp.c

egrep "(hello){3}" tcp.c

grep "�int" tcp.c

grep ";$" tcp.c

egrep "�[�0-9]*$" tcp.c

Searching in �les

grep "stack" tcp.c

grep "s.ack" tcp.c

grep "[0-9][0-9][0-9][0-9][0-9]" tcp.c

grep "�int" tcp.c

grep ";$" tcp.c

egrep "�[�0-9]*$" tcp.c

Searching in �les

grep "stack" tcp.c

grep "s.ack" tcp.c

grep "[0-9][0-9][0-9][0-9][0-9]" tcp.c

grep "�int" tcp.c

grep ";$" tcp.c

egrep "�[�0-9]*$" tcp.c

Searching in �les

grep "stack" tcp.c

grep "s.ack" tcp.c

grep "[0-9][0-9][0-9][0-9][0-9]" tcp.c

grep "�int" tcp.c

grep ";$" tcp.c

egrep "�[�0-9]*$" tcp.c

Searching in �les

grep "stack" tcp.c

grep "s.ack" tcp.c

grep "[0-9][0-9][0-9][0-9][0-9]" tcp.c

grep "�int" tcp.c

grep ";$" tcp.c

egrep "�[�0-9]*$" tcp.c

Searching in �les

grep "stack" tcp.c

grep "s.ack" tcp.c

grep "[0-9][0-9][0-9][0-9][0-9]" tcp.c

grep "�int" tcp.c

grep ";$" tcp.c

egrep "�[�0-9]*$" tcp.c

Searching in �les

grep "stack" tcp.c

grep "s.ack" tcp.c

grep "[0-9][0-9][0-9][0-9][0-9]" tcp.c

grep "�int" tcp.c

grep ";$" tcp.c

egrep "�[�0-9]*$" tcp.c

Searching in �les

grep "stack" tcp.c

grep "s.ack" tcp.c

grep "[0-9][0-9][0-9][0-9][0-9]" tcp.c

grep "�int" tcp.c

grep ";$" tcp.c

egrep "�[�0-9]*$" tcp.c

Searching in �les

grep "stack" tcp.c

grep "s.ack" tcp.c

grep "[0-9][0-9][0-9][0-9][0-9]" tcp.c

grep "�int" tcp.c

grep ";$" tcp.c

egrep "�[�0-9]*$" tcp.c

Searching in �les

grep "stack" tcp.c

grep "s.ack" tcp.c

grep "[0-9][0-9][0-9][0-9][0-9]" tcp.c

grep "�int" tcp.c

grep ";$" tcp.c

egrep "�[�0-9]*$" tcp.c

Searching in �les

grep "stack" tcp.c

grep "s.ack" tcp.c

grep "[0-9][0-9][0-9][0-9][0-9]" tcp.c

grep "�int" tcp.c

grep ";$" tcp.c

egrep "�[�0-9]*$" tcp.c

Table Of Contents

1 Shell

2 Basic commands

3 Permissions

4 Text editors

5 Search for �les

6 Grep/Egrep

7 Di�

Compare �les line by line

di� �le1 �le2

di� dir1/ dir2/

di� �le3 �le4 -B

di� �le4 �le5 -b

di� �le1 �le2 -y

di� �le1 �le2

di� dir1/ dir2/

di� �le1 �le2

di� dir1/ dir2/

di� �le1 �le2

di� dir1/ dir2/

di� �le1 �le2

di� dir1/ dir2/

Table Of Contents

1 Shell

2 Basic commands

3 Permissions

4 Text editors

5 Search for �les

6 Grep/Egrep

7 Di�

Secure copy - Remote copy program

scp [user1@host1:]�le1 [user2@host2:]�le2

scp sagarun@fedorapeople.org:public_html/misc/sysfs_screenshot.png~/Desktop

Secure copy - Remote copy program

scp [user1@host1:]�le1 [user2@host2:]�le2

scp sagarun@fedorapeople.org:public_html/misc/sysfs_screenshot.png~/Desktop

Table Of Contents

1 Shell

2 Basic commands

3 Permissions

4 Text editors

5 Search for �les

6 Grep/Egrep

7 Di�

Table Of Contents

1 Shell

2 Basic commands

3 Permissions

4 Text editors

5 Search for �les

6 Grep/Egrep

7 Di�

Wget - Network Downloader

wget <URL>

wget -c http://sagarun.fedorapeople.org/misc/fedora-live-base.ks

Wget - Network Downloader

wget <URL>

wget -c http://sagarun.fedorapeople.org/misc/fedora-live-base.ks

Table Of Contents

1 Shell

2 Basic commands

3 Permissions

4 Text editors

5 Search for �les

6 Grep/Egrep

7 Di�

CURL - transfer a URL

curl <URL>

curl http://www.google.com/

curl -L http://www.google.com/

curl -O http://www.google.co.in/index.html

curl -I http://yahoo.com/

curl http://icanhazip.com/

curl <URL>

Table Of Contents

1 Shell

2 Basic commands

3 Permissions

4 Text editors

5 Search for �les

6 Grep/Egrep

7 Di�

Input/Error/Output Redirection

cat /etc/passwd | grep zer0c00l

cat /etc/passwd > temppasswd

cat /etc/passwd � temppasswd

lsl 2> /dev/null

./conversation.py < name

ping google.com | tee ping

lsl 2> /dev/null

Practical GNU/Linuxsagarun.fedorapeople.org/talks/Practical_Linux_0.pdf · Practical GNU/Linux Arun...

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