Regular expressions, Text editing in the command line

[mikhail90]

hello everyone, I've been given an assignment from school. My teacher has given me a simple text file that looks as followed.
________________
Asda Cola
asda Fanta
Adsa Beer
Asda Wine
________________
* note there are some spelling errors in this list.

I have to make a script that turns the above list into something like this.
_______________
Asda Cola
Fanta
Beer
Wine
________________

I can get it to work without the spelling errors in the first list using these simple commands.

Sed 's/Asda//g' Asda.txt > Asdafin.txt
clear
sed -i '1s/^/Asda /' Asdafin.txt
clear

This however isn't quite the way it should be because if I accidentally misspell Asda it won't copy that line.

I know there is something like regular expressions but I'm not quite sure how to implement this in my script.

Any tips and pointers are really appreciated.

Thanks in advance, Mikhail.

[watael]

hi,

is 'Adsa Beer' intentional?
otherwise:

sed '2,$s/[aA]sda *//' Asda.txt

[Kloschüssel]

See #3 in the Forum Rules

Homework is there to learn. Do that - it won't do any harm and you are on the right track with regular expressions.

[Syndacate]

See #3 in the Forum Rules

Homework is there to learn. Do that - it won't do any harm and you are on the right track with regular expressions.

I don't think it's fair to attack him for this post, man. He came up front about it being homework, he put forth an honest effort, and was just asking for a push in the right direction after he showed the work he has thus far. He's not like what that rule was aimed at which is the people trying to slip their homework under the radar the night before it's due without doing any work on it or even attempting it.

In another words, chill out...

[msohail]

hello everyone, I've been given an assignment from school. My teacher has given me a simple text file that looks as followed.
________________
Asda Cola
asda Fanta
Adsa Beer
Asda Wine
________________
* note there are some spelling errors in this list.

I have to make a script that turns the above list into something like this.
_______________
Asda Cola
Fanta
Beer
Wine
________________

I can get it to work without the spelling errors in the first list using these simple commands.

Sed 's/Asda//g' Asda.txt > Asdafin.txt
clear
sed -i '1s/^/Asda /' Asdafin.txt
clear

This however isn't quite the way it should be because if I accidentally misspell Asda it won't copy that line.

I know there is something like regular expressions but I'm not quite sure how to implement this in my script.

Any tips and pointers are really appreciated.

Thanks in advance, Mikhail.

How about this one ?

head -1 Asda.txt  > final
tail -n +2 test1 | awk '{print $2}' >> Asdafin.txt

Asda.txt will have
________________
Asda Cola
asda Fanta
Adsa Beer
Asda Wine
________________

and Asdafin.txt will have

Asda Cola
Fanta
Beer
Wine
________________

Jazak Allah
Sohail

[watael]

How about this one ?

reread, and rewrite your code: filenames don't match.

the more external command a script includes, slower it is.
cut should be prefered to using awk for simply cutting a field on an obvious separator

sed '2,$s/[^ ]* //' yourFile

this way I don't care if it's adsa or asda.

[msohail]

reread, and rewrite your code: filenames don't match.

the more external command a script includes, slower it is.
cut should be prefered to using awk for simply cutting a field on an obvious separator

sed '2,$s/[^ ]* //' yourFile

this way I don't care if it's adsa or asda.

I agree

Jazak Allah
Sohail