Extract numerical values from text file in bash script
Hi
How can I put a numerical value to bash script variable from text file?
I have a text file with entire numerical values in some strings:
$cat numbers.txt:
23424
534
234566
95
I need select an first line put to text varible, convert to numerical value and then make arithmetical operation (add and divide) with these values.
Thank you.
How can I put a numerical value to bash script variable from text file?
I have a text file with entire numerical values in some strings:
$cat numbers.txt:
23424
534
234566
95
I need select an first line put to text varible, convert to numerical value and then make arithmetical operation (add and divide) with these values.
Thank you.
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SOLUTION
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ASKER
Hello
With ghostdog74 solution I get character values from text file and with omarfarid solution I can arithmetical operation in the form that I want.
Thank you
With ghostdog74 solution I get character values from text file and with omarfarid solution I can arithmetical operation in the form that I want.
Thank you
No need to use expr in a bash/ksh/zsh script as they have inbuilt maths functions, eg:
a=1
let b=a+10
ASKER