help with using awk or grep

[adriana]

Hi,

Thanks for reading this, and maybe helping.

I want to solve the following problem.
I have the file:
xxx
aaa
xxx
xxx
xxx
aaa
xxx
aaa
yyy
zzz

and what to get the lines in between "aaa"s on the same line, smth like:
aaaxxxxxxxxx
aaaxxx

note that I don't print after the last "aaa"

Any ideas are appreciate!

[Franklin52]

Should be something like:

awk '/aaa/ {if(s){print s}s="";f=1}f{s=s $0}' file

[adriana]

Many thanks! Just what I needed

Should be something like:

awk '/aaa/ {if(s){print s}s="";f=1}f{s=s $0}' file

[adriana]

One more small modification: on the line where I search the pattern I want to print only the first field

So, if my input fle lokks smth like
xxx
aaa ggg
xxx
xxx
xxx
aaa bbb
xxx
aaa ccc
yyy
zzz

I what to get the same as before:
aaaxxxxxxxxx
aaaxxx

?

Hi,

Thanks for reading this, and maybe helping.

I want to solve the following problem.
I have the file:
xxx
aaa
xxx
xxx
xxx
aaa
xxx
aaa
yyy
zzz

and what to get the lines in between "aaa"s on the same line, smth like:
aaaxxxxxxxxx
aaaxxx

note that I don't print after the last "aaa"




Any ideas are appreciate!

[Franklin52]

One more small modification: on the line where I search the pattern I want to print only the first field

So, if my input fle lokks smth like
xxx
aaa ggg
xxx
xxx
xxx
aaa bbb
xxx
aaa ccc
yyy
zzz

I what to get the same as before:
aaaxxxxxxxxx
aaaxxx

?

Judt replace $0 with $1:

awk '/aaa/ {if(s){print s}s="";f=1}f{s=s $1}' file

[adriana]

Judt replace $0 with $1:

awk '/aaa/ {if(s){print s}s="";f=1}f{s=s $1}' file

One more modification:

I want to have a space between the first field in the pattern and all the others
The result should look smth like:

aaa xxxxxxxxx
aaa xxx

?

[Franklin52]

One more modification:

I want to have a space between the first field in the pattern and all the others
The result should look smth like:

aaa xxxxxxxxx
aaa xxx

?

With a slightly modification:

awk '/aaa/ {if(s){print s}s="";f=1}f{s=s?s $1:$1 " "}' file

[adriana]

With a slightly modification:

awk '/aaa/ {if(s){print s}s="";f=1}f{s=s?s $1:$1 " "}' file

Great! Many thanks!