Parsing char string

ALTRUNVRSOFLN · #1 (**permalink**) 08-07-2008

I am stumped! I need to parse an input parameter to a script that has the form '-Ort'. I basically need 'O', 'r' and 't', i.e. the individual characters in the string parsed.

Since there are no delimiters, I don't know how awk could do this. Can someone tell how to do this, this should be a common task in writing scripts?

joeyg · #2 (**permalink**) 08-07-2008

Code:

> echo '-Ort' | awk '{print substr($0,2,1)}'
O
> echo '-Ort' | awk '{print substr($0,3,1)}'
r
> echo '-Ort' | awk '{print substr($0,4,1)}'
t

aigles · #3 (**permalink**) 08-07-2008

Another Ways (get second char) :

Code:

echo '-Ort' | cut -c2  
expr substr '-Ort' 2 1

Jean-Pierre.

shamrock · #4 (**permalink**) 08-07-2008

Code:

echo '-Ort' | awk -F\- '{gsub(".","&\n",$2);printf("%s",$2)}'

broli · #5 (**permalink**) 08-07-2008

if you are parsing the argunments send by you in a script. like
./yscript.sj -orT

the you could use getops
Getopt and getopts

danmero · #6 (**permalink**) 08-07-2008

Or this one

Code:

echo '-Ort' | awk 'BEGIN{FS=""}{for(i=1;i<=NF;i++)if($i ~ "[a-zA-Z]"){print $i}}'

More UNIX and Linux Forum Topics You Might Find Helpful
Thread	Thread Starter	Forum	Replies	Last Post
how to get number char from a string	netbanker	Shell Programming and Scripting	4	07-16-2008 03:16 PM
last char from a string	broli	Shell Programming and Scripting	6	12-07-2007 08:02 PM
replacing char with string	phani_sree	High Level Programming	1	11-20-2006 08:57 AM
string of 7 char length always...	thanuman	UNIX for Dummies Questions & Answers	3	04-12-2005 12:51 PM
Compare Char to String	Phobos	High Level Programming	3	04-09-2005 11:01 AM

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes	Rate This Thread
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode	Rate This Thread:


	Powered by