[LINUX] [Shell art] Only when it is a multiple of 3 and a number with 3 becomes stupid

【Overview】

For numbers from 1 to 40, the character string "stupid" is output only when the number is a multiple of 3 and the number has 3. Otherwise, it outputs numbers. The point is that ʻawkuses the regular expression/3 /`.

A number larger than 40 can also be executed.

【environment】

[vagrant@vagrant-centos65 ~]$ cat /etc/redhat-release 
CentOS release 6.5 (Final)

【code】

for i in `seq 40`; do echo $i | awk '{ if ($0 ~ /3/ || $0 % 3 == 0) print "Stupid"; else print }'; done

【Execution result】

[vagrant@vagrant-centos65 ~]$ for i in `seq 40`; do echo $i | awk '{ if ($0 ~ /3/ || $0 % 3 == 0) print "Stupid"; else print }'; done
1
2
Stupid
4
5
Stupid
7
8
Stupid
10
11
Stupid
Stupid
14
Stupid
16
17
Stupid
19
20
Stupid
22
Stupid
Stupid
25
26
Stupid
28
29
Stupid
Stupid
Stupid
Stupid
Stupid
Stupid
Stupid
Stupid
Stupid
Stupid
40
[vagrant@vagrant-centos65 ~]$

Recommended Posts

[Shell art] Only when it is a multiple of 3 and a number with 3 becomes stupid

Image processing with Python (I tried binarizing it into a mosaic art of 0 and 1)

Try to find the probability that it is a multiple of 3 and not a multiple of 5 when one is removed from a card with natural numbers 1 to 100 using Ruby and Python.

A script that pings the registered server and sends an email with Gmail a certain number of times when it fails

What to do when a part of the background image becomes transparent when the transparent image is combined with Pillow

Is it possible to enter a venture before listing and make a lot of money with stock options?

I wanted to know the number of lines in multiple files, so I tried to get it with a command

It is more convenient to use csv-table when writing a table with python-sphinx

Judge whether it is a prime number [Python]

If you define a method in a Ruby class and define a method in it, it becomes a method of the original class.

[Python Data Frame] When the value is empty, fill it with the value of another column.