topic Re: awk doubt in Operating System - HP-UX

awk doubt

Vogra — Mon, 29 Apr 2002 14:39:50 GMT

Hi All!
how can I get the file name without extention from the list of files?
ex. I have the name: 24145123.sc
that 24145123 is the string I need.
thanx.

Re: awk doubt

S.K. Chan — Mon, 29 Apr 2002 14:44:07 GMT

# echo 24145123.sc | awk -F. '{print $1}'

Re: awk doubt

hpuxrox — Mon, 29 Apr 2002 14:45:59 GMT

# ls | grep ".sc" | awk -F. '{print $1}'

Re: awk doubt

Sukant Naik — Mon, 29 Apr 2002 14:47:17 GMT

grep *.sc | awk -F. '{print $1}'

Just my two cents.
-Sukant

Re: awk doubt

Sachin Patel — Mon, 29 Apr 2002 14:47:59 GMT

Another way using cut.

ls |grep *.sc |cut -d"." -f1

Sachin

Re: awk doubt

MANOJ SRIVASTAVA — Mon, 29 Apr 2002 14:49:03 GMT

Hi Claudio

there is a simpler way if that is waht you are trying to do

echo 24145123.sc | cut -c 1-8 will give you the file name w/o the externsion.

Manoj Srivastava

Re: awk doubt

hpuxrox — Mon, 29 Apr 2002 14:54:01 GMT

Claudio Lima,

Be carefull with cut -c. Cut -c does not have the ability to do padding like awk can. I think awk is your best chose for what you are trying to do.

-Yates

Re: awk doubt

Rodney Hills — Mon, 29 Apr 2002 15:01:39 GMT

If you running a shell script under "ksh", you can use the parameter substitution as follows-

withext="12332234.sc"
without=${withext%.*}
echo $without
12332234

-- Rod Hills

Re: awk doubt

Darrell Allen — Mon, 29 Apr 2002 15:08:21 GMT

Hi Claudio,

Let's get a little weird...

echo sc.sc.sckjs.scsc.scs.sc | awk '{FS="\.sc$"} {print $1}'

This allows for multiple "dots" in the filename as well as multiple occurances or ".sc". Not to mention that the "$" anchors
".sc" to the end of the filename and the "\" keeps the "." from being expanded as a wildcard.

Rodney's tip works well! It's much simpler than this.

Darrell

Re: awk doubt

John Carr_2 — Mon, 29 Apr 2002 15:28:46 GMT

Hi

and an alternative to awk

echo 24145123.sc | sed -e 's/.sc//g'

cheers
John

Re: awk doubt

James R. Ferguson — Mon, 29 Apr 2002 15:39:08 GMT

Hi:

I can't resist...Rodney's solution is the fastest, since the shell is doing the work rather than spawning another process.

Another 'awk' variation, which would be useful if you had multiple fields (columns) each with "."s might look like this:

# echo "abc.123 def.456 ghi.789"|awk '{split($3,a,".");print a[1]}'

In the above example, "ghi" (the first part of the third field) would be returned.

Regards!

...JRF...

Re: awk doubt

Graham Cameron_1 — Tue, 30 Apr 2002 08:53:11 GMT

You don't need awk.
There is a command exactly for this:
basename 24145123.sc .sc
(only works if you know the extension, ie '.sc' though)

Graham

Re: awk doubt

Darrell Allen — Tue, 30 Apr 2002 12:03:47 GMT

Good one Graham! I had thought about basename but obviously didn't read the man page very closely. Duh! Learned something again!

This points out how often there are other uses for UNIX commands other than the one(s) we typically use. Also the value of these forums.

N/A please.

Darrell

Re: awk doubt

Charles Stepp — Tue, 30 Apr 2002 18:09:07 GMT

I like sed:

echo "this.that" | sed 's/\..*//'