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Tag :
bash
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🔍 See Original Answer on Ask Ubuntu ⧉ 🔗
URL:
https://askubuntu.com/q/823649
Title:
Adding 1 to a variable doesn't work as expected (Bash arithmetic)
ID:
/2016/09/11/Adding-1-to-a-variable-doesn_t-work-as-expected-_Bash-arithmetic_
Created:
September 11, 2016
Upload:
September 15, 2024
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An alternate method may be to keep your variables as integers and convert them to a string at the end:
A=12
B=$((A+1))
echo $B
13
C=$( printf '%04d' $B )
echo $C
0013
This style of working with integers in math and converting to string for the answer is more intuitive to me as I’m used to BASIC programming. I appreciate Bash doesn’t have variable typing like C and BASIC but pretending it does makes me happy.