Revision: 10414
at December 28, 2008 10:29 by jaduks

Updated Code
```#!/bin/sh
#Sum of all digits in a number

num=12334
tot=0
mod=0
echo "Number = \$num"
while [ \$num -gt 0 ]
do
mod=\$(expr \$num % 10)
tot=\$(expr \$tot + \$mod)
num=\$(expr \$num / 10)
done
echo "Sum= \$tot"

\$ ./sumofdig.sh
Number = 12334
Sum= 13

Another alternative using sed:

\$ expr \$(echo "12334" | sed -e 's/[0-9]/ + &/g' -e 's/^ +//g')
13

Breakdown steps:

\$ echo "12334"
12334

\$ echo "12334" | sed 's/[0-9]/ + &/g'
+ 1 + 2 + 3 + 3 + 4

\$ echo "12334" | sed -e 's/[0-9]/ + &/g' -e 's/^ +//g'
1 + 2 + 3 + 3 + 4

\$ expr \$(echo "12334" | sed -e 's/[0-9]/ + &/g' -e 's/^ +//g')
13```

Revision: 10413
at December 28, 2008 01:44 by jaduks

Updated Code
```#!/bin/sh
#Sum of all digits in a number

num=12334
tot=0
mod=0
echo "Number = \$num"
while [ \$num -gt 0 ]
do
mod=\$(expr \$num % 10)
tot=\$(expr \$tot + \$mod)
num=\$(expr \$num / 10)
done
echo "Sum= \$tot"

\$ ./sumofdig.sh
Number = 12334
Sum= 13

Another alternative using sed:

\$ expr \$(echo "12334" | sed 's/[0-9]/ + &/g' | sed 's/^ +//g')
13```

Revision: 10412
at December 28, 2008 01:39 by jaduks

Initial Code
```#!/bin/sh
#Sum of all digits in a number

num=12334
tot=0
mod=0
echo "Number = \$num"
while [ \$num -gt 0 ]
do
mod=`expr \$num % 10`
tot=`expr \$tot + \$mod`
num=`expr \$num / 10`
done
echo "Sum= \$tot"

\$ ./sumofdig.sh
Number = 12334
Sum= 13

Another alternative using sed:

\$ expr \$(echo "12334" | sed 's/[0-9]/ + &/g' | sed 's/^ +//g')
13```

Initial URL
`http://unstableme.blogspot.com/2007/02/sum-of-all-digits-of-number.html`

Initial Description
`Sum of digits using bash and sed`

Initial Title
`Sum of digits using bash and sed`

Initial Tags
`Bash`

Initial Language
`Bash`