combining lines between 2 pattern using awk

shell.scriptor · #1 (**permalink**) 08-26-2008

Hi

I am fairly new to shell scripting
i have some file with outout
1011
abc fyi
6.1.4.5

abr tio
70986
dfb hji
4.1.7
....some text
111114

i have to format this text to

1011 abc fyi 6.1.4.5 abr tio
70986 dfb hji 4.1.7 ....some text
111114

basically combine the lines between the patterns that have whole numbers
is this possible in a simple awk script?

Thanks much

era · #2 (**permalink**) 08-26-2008

Use printf to print a space and the current line without a trailing newline. When you see a new integer or end of file, printf a newline and the current line.

shell.scriptor · #3 (**permalink**) 08-26-2008

Thanks era

do have a code snipet i could use

Thanks

era · #4 (**permalink**) 08-26-2008

I didn't, but now I do.

Code:

awk '$1 ~ /^[1-9][0-9]*$/{ if (NR > 1) printf "\n"; printf "%s", $0; next; }
{ printf " %s", $0; }
END { printf "\n" }' filename

The integer test feels kind of inelegant, I guess there must be a better way to do it.

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