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Extract characters from a string name

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# 1  
Old 11-01-2017
Extract characters from a string name
Hi All,

I am trying to extract only characters from a string value eg:
Code:
abcdedg1234.cnf

How can I extract only characters
Code:
abcdedg

and assign to a variable.
Please help.

Thanks
Last edited by Scrutinizer; 11-01-2017 at 07:19 AM.. Reason: code tags
# 2  
Old 11-01-2017
Quote:
Originally Posted by abhi_123
Hi All,
I am trying to extract only characters from a string value eg: abcdedg1234.cnf
How can I extract only characters abcdedg and assign to a variable.
Please help.
Thanks
Hello abhi_123,

Please use CODE TAGS as per forum rules for your sample Input_file and sample output_file, following may help you in same.
Code:
val="abcdedg1234.cnf"
echo "$val" |  awk '{match($0,/[a-zA-Z]+/);print substr($0,RSTART,RLENGTH)}'

To keep above into a variable and print it's value do following.
Code:
var=$(echo "$val" |  awk '{match($0,/[a-zA-Z]+/);print substr($0,RSTART,RLENGTH)}')
echo "$var"
abcdedg

Thanks,
R. Singh
These 2 Users Gave Thanks to RavinderSingh13 For This Post:
abhi_123 rbatte1
# 3  
Old 11-01-2017
Try:
Code:
var=abcdedg1234.cnf
echo "${var%%[![:alpha:]]*}"

Last edited by Scrutinizer; 11-01-2017 at 08:32 AM..
These 3 Users Gave Thanks to Scrutinizer For This Post:
abhi_123 RavinderSingh13 rbatte1
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