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hiroyuki.obinata otamajakusi

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otamajakusi / dump_sign.c
Created November 3, 2022 06:38
dump signature generated by `openssl dgst -sign private.pem -sha256 myfile > signature.sig`
#include <openssl/pem.h>
#include <openssl/rsa.h>
#include <stdint.h>
#include <string.h>
#include <stdio.h>
int usage(const char *cmd) {
fprintf(stderr, "Error: %s private.pem signature.sig\n", cmd);
return 1;
}
@otamajakusi
otamajakusi / gist:ef693e5ee0eccce228aa31a37decec81
Created December 26, 2022 01:18
in case of NO_PUBKEY A4B469963BF863CC
sudo apt-key del A4B469963BF863CC
sudo apt-key adv --fetch-keys https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2004/x86_64/3bf863cc.pub
@otamajakusi
otamajakusi / fizzbuzz.rb
Last active September 22, 2023 08:32
fizzbuzz ruby implementation inspired by https://gist.github.com/kazuho/3300555
fizz = _fizz = lambda do
fizz = lambda do
fizz = lambda do
fizz = _fizz
"Fizz"
end
""
end
""
end
@otamajakusi
otamajakusi / gist:3ee1403cddbf2abee91cb7a78e12342d
Created March 19, 2024 02:53
how to download a large file from google drive
1. launch google colab and mount drive
2. launch cloud instance (e.g. EC2)
3. upload ssh key to google drive
4. use scp on google colab:
scp -o StrictHostKeyChecking=no -i ~/.ssh/uploaded.pem large-file user@cloud-instance-ip-addr:
5. download large-file from the cloud instance to the local machine