Homework & Coursework Questions

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1. The problem statement, all variables and given/known data:
I have to make as home work several commands with gerp find and sed

2. Relevant commands, code, scripts, algorithms:
FIND command
-use command find to display all files, such that file is usual file and display all his line with inscription "MA"

GREP comand
display user with grep command form /etc/passwd

1. to display all login to begin and finishing with letter a or b

Code:

  Code:
  etc.users
 admina
 bserb
 broota

2. beginning and finishing with the same sign

Code:

Code:
  etc. users
aghata:....
roootr:....

3. to contain what the least three identical signs standing by me

Code:

Code:
  etc. users
 rooot:.....
admmmin:.....
ussser...

4. it including five signs which was can read backwards

Code:

Code:
  etc. users
      Do geese see God?  ->  do Geese see goD
      Devil lived   -> devil liveD

SED comand

1. replace multiple the pronouncement of any sign one such sign

Code:

 Code:
  etc. jfaghkjfhadglkjaaaadfgdffffffdddttttmmmm
      jfaghkjfhadglkjadfgdfdttm

2. replace every the pronouncement of sign aaaa bbb only and or only b

3. The attempts at a solution (include all code and scripts):
In find i try find . -type f -exec grep -l MA {} \;

4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):
Nicolaus Copernicus University
Torun, Poland
professor Zyglarski Błazej
sk1-cw2
Note: Without school/professor/course information, you will be banned if you post here! You must complete the entire template (not just parts of it).

I'll do this one for you.

Code:

$ grep '\([a-z]\)\([a-z]\)\([a-z]\)\([a-z]\)\([a-z]\).*\5\4\3\2\1' text
orizabus subaziro:ljjljlkjlk:roota:jkjhkjhk

"orizabus subaziro" besides being a palindrome is the real scientific name for some kind of insect.

I give another one :

Code:

$ echo "jfaghkjfhadglkjaaaadfgdffffffdddttttmmmm" | sed 's/\(.\)\1*/\1/g'
jfaghkjfhadglkjadfgdfdtm

sed 's/\(.\)\1*/\1/g' explanations :


If you want to remove only adding successive occurrenc of ... let's say only letters a or t :

Code:

$ echo "jfaghkjfhadglkjaaaadfgdffffffdddttttmmmm" | sed 's/\([at]\)\1*/\1/g'
jfaghkjfhadglkjadfgdffffffdddtmmmm

Who want make more ?

Your point?

Make more what, exactly?

You want everyone just to give you all the answers?

What would you learn from that?

@unix.com admin
Is there a link to post #1 in the original language?

How are you viewing this page? It looks to be in the original language to me.