Using VI to insert line from bash script

[Hein van den Heuvel · Accepted solution]

>> I want to replace each "17,10:1" to "17,9:1/E" and insert a new line under it with a value ",10:1"
>> So, how can I do this with awk ?

yes, but WHY?

awk '/^17,10:1/ {gsub (/,/, ",9.5/E\n,")} {print} ' x

>> It's work, Any more powerful Ideas ?

Only if you describe in a powerful way where the 17 and the 9.1 (9.5) and such come from.
Are they really just fixed strings, always the same? That is a totally boring case. Just pick a solution and be happy.

Cheers,
Hein.

[AZayed]

Hi Hein,

My customer changed his idea so I had to change my work. And yes, it's easy one.

But in your awk command, you didn't insert ",10:1" value.

Last thing before I close this case, do you recommend a useful awk and sed from personal experiences?

Thanks :)

[AZayed]

Hi Hein,

It seems your line working great. although, I didn't notice that you wrote ",10:1" in your line. But your awk line doing what I want do do. It's amazing :)

I want to learn how to use awk because this line is more powerful than complex bash script.

Thanks

[James R. Ferguson]

Hi:

If you want to start with 'awk' you could use this free, but excellent guide:

http://www.gnu.org/software/gawk/manual/gawk.html

Be aware that the GNU variant is a bit more powerful than HP's or AIX's standard.

Regards!

...JRF...

[AZayed]

Thanks JRF,

Thanks folks for your support.

Have a nice day.

[AZayed]

Yes,

It's awk command. It's powerful.

awk '/^17,10:1$/ { gsub (/,/, ",9:5/E\n,") } { print }'

[Hein van den Heuvel]

>> It seems your line working great. although, I didn't notice that you wrote ",10:1" in your line. But your awk line doing what I want do do. It's amazing :)

I did't write ,10:1. That was already there :-).
I just stuck a new-line ( \n ) in front of it.

I wrote my solution in anticipation of future, other needs. That's was seperates solutions from hacks.
My assumption was that you did not want "10:1" but "whatever was on the old line after the comma"... which happens to be 10:1 for now.
Similar for the 17. I left the value itself on the line, using it only as a simple regular expression untill you explained better where the 17 came from.
I only replaced the comma, not the values.

Try this:

$ awk '/^[0-9]+,/ {gsub (/,/, ",9.5/E\n,")} {print} ' x

... no 17, no 10, and yet...


>> I want to learn how to use awk because this line is more powerful than complex bash script.


I was hoping that, and that's why I providede the blow-by-blow breakdown in my first example. Try to follow that!

Cheers,
Hein.

[Dennis Handly]

As Duncan said, you can't use vi. You can use sed(1), awk(1), perl(1), ed(1) or ex(1).

Your example above would be:
ex a << EOF
i
insert data
.
wq
EOF