Drezil/Bash-Oneliner
1
0
Fork 0
mirror of https://github.com/onceupon/Bash-Oneliner.git synced 2024-11-22 21:07:00 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add Math

Browse Source 
Arithmetic Expansion in Bash
This commit is contained in:
I-Man Ng 2019-05-09 20:17:21 +08:00 committed by GitHub
parent 36edc1aee4
commit 1342f5dd46
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 15 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
README.md
View File

@ -1064,6 +1064,21 @@ helloworld
## Math ## Math
[[back to top](#handy-bash-oneliner-commands)] [[back to top](#handy-bash-oneliner-commands)]
##### Arithmetic Expansion in Bash (Operators: +,-,*,/,%,etc)
```bash
echo $(( 10 + 5 )) #15
x=1
echo $(( x++ )) #1 , notice that it is still 1, since it's post-incremen
echo $(( x++ )) #2
echo $(( ++x )) #4 , notice that it is not 3 since it's pre-incremen
echo $(( x-- )) #4
echo $(( x-- )) #3
echo $(( --x )) #1
x=2
y=3
echo $(( x ** y )) #8
```
##### Print out the prime factors of a number (e.g. 50) ##### Print out the prime factors of a number (e.g. 50)
```bash ```bash
factor 50 factor 50