Re: [HACKERS] grep command

[Andrew Dunstan <andrew(at)dunslane(dot)net>]

Leaving aside the question of why one might want to do this, Unix 101 
should show you many ways to do it. For example,

sed -n -e 's/.*PG_VERSION /PG_VERSION /p' -e /PG_VERSION/q config.log

Please don't cross-post questions like this, especially when it's not 
really a PostgreSQL question at all.

cheers

andrew

Kuriakose, Cinu Cheriyamoozhiyil wrote:
> Hi All, 
>
> I am giving the command 
>
> cat config.log|grep -w 'PG_VERSION'
>
> Which gives the following Output:
>
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> | #define PG_VERSION "8.3beta2"
> #define PG_VERSION "8.3beta2"
>
> But the output that I would require is 
>
> PG_VERSION "8.3beta2" that should occur only once, can anyone please
> tell me the command to get this output.
>
> Thanks in advance
>
> Regards
> Cinu Kuriakose
>  
>
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