regex help

[Mag0007]

How can I test for the following:

A4ABCdd
a654321
a987463
1122322

I want to get first character be [a-z] and the last 6 characters be numbers [0-9]

So, this would print out
Desired output:

a654321
a987463

 

[p5wizard]

egrep '^[a-z][0-9]{6}$'

see man egrep


HTH,

p5wizard

 

[Annihilannic]

Note that unfortunately some egrep's don't support the {#repeats} syntax, for e.g. on Solaris you need to use /usr/xpg4/bin/egrep.

Annihilannic.

 

[p5wizard]

Well it works on AIX, and most of Mag's questions are AIX-related so...

And as this is an AWK forum, I tested it... and it works in awk on AIX also.


HTH,

p5wizard

 

[Mag0007]

awk '{ if ($1==/^[a-z][0-9]{6}$/) print $1 }' /tmp/file

does that look right?

 

[PHV]

Try this instead:
awk '$1~/^[a-z][0-9]{6}$/{print $1}' /tmp/file

Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ181-2886

 

[Mag0007]

still no cigar.

I get no results back.

 

[PHV]

Could you please post your actual code and sample records of /tmp/file ?

Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ181-2886

 

[Mag0007]

Sure

cat /tmp/file
A4ABCdd
a654321
a987463
1122322

I am trying to get the following output

a654321
a987463

I want to get first character be [a-z] and the last 6 characters be numbers [0-9]

Trying something like this

awk '{ if ($1==/^[a-z][0-9]{6}$/) print $1 }' /tmp/file

TIA

 

[PHV]

Have you even tried the code I suggested you 25 Oct 06 14:19 ?

Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ181-2886

 

[p5wizard]

with that input file even this awk code should work:

awk '/^[a-z][0-9]{6}$/' /tmp/file


HTH,

p5wizard