awk file manipulation

[rogers42]

Hi,

I am new to awk and had the following questions w.r.t file manipulation

1, How do I read multiple files and search for common records (in the two or more files) ?

2, How can I exectue an awk utility with out having to specify an input file name at the command line ?

Thanks in advance.

rogers42

 

[feherke]

Hi

[blue]master #[/blue] mawk -W version
mawk 1.3.3 Nov 1996, Copyright (C) Michael D. Brennan
[gray]( ... )[/gray]

[blue]master #[/blue] gawk -W version
GNU Awk 3.1.1
Copyright (C) 1989, 1991-2002 Free Software Foundation.
[gray]( ... )[/gray]

Feherke.

http://rootshell.be/~feherke/

 

[Annihilannic]

None of the various versions on Solaris 8 seem to be capable of reporting their versions, however they all produce slightly different usage messages:

[tt]# /usr/bin/awk
awk: Usage: awk [-Fc] [-f source | 'cmds'] [files]
# /usr/bin/nawk
Usage: /usr/bin/nawk [-f programfile | 'program'] [-Ffieldsep] [-v var=value] [files]
# /usr/xpg4/bin/awk
Usage: awk [-F ERE] [-v var=val] 'program' [var=val ...] [file ...]
awk [-F ERE] -f progfile ... [-v var=val] [var=val ...] [file ...][/tt]

I find I always have to use nawk or the XPG4 version though because awk is very basic. It's one of my pet hates, I see no reason why they couldn't just update it since the newer versions (should) have a superset of the old awk functionality.

Annihilannic.