snprintf : zero-length gnu_prntf format string

snprintf(str, sizeof(""), "")
--> sprintf(str, "");

zero-length gnu_printf format string

#C #C++ #sprintf #zero-length #gnu_printf #format string

PBAP(Phone Book Access Profile)


Phone Book Access Profile (PBAP) : the procedure and protocol for exchanging phone book objects between devices.

Structure vs Class Only different !

Structure vs Class

only different: base access modifier

Structure is Public.
Class is Private.


target board Setting NFS

1. sudo apt-get install nfs-common nfs-kernel-server portmap

2. sudo vi /etc/exports
/home/nfs/folder 192.168.0.*(rw,no_root_squash,async,subtree_check)

3. sudo /etc/init.d/nfs-kernel-server restart

4. mkdir /home/nfs/folder

// target board
1. mount -o port=2049,nolock,proto=tcp -t nfs 192.168.0.100:/home/nfs/folder /mnt

Git Command

git init : create Git Repository in current directory
git status: check uncommit issue
git --version : check version
git add: update in staging area( staging area: buffer area between work tree and repository)
git commit: commit file in staging area
git diff : show different between work tree and staging area
git config (--global) --list: check config information(--global set global, besides current area)
git log: commit log
git log $CommitName: show log in CommitName
git clone $repo $folder: copy from $repo and $local folder
git fetch: update local repo(though remote branch)
git push: push origin repo
git gc: repo log optimization



ADDING....

GIT clone error / delete branch in remote repository

GIT clone Error

ERROR
fetal: internal server error
remote: internal server error
fatal: early EOF
fatal: index-pack failed

solution :
if 'origin' branch was delete in remote repo, local is update about the information and the branch is delete automatically. 

cmd:
  $ git remote prune origin

printf % type

%c/%C  char
%s  string 
%p  pointer value hexadecimal number
%d/%i  signed decimal number
%u  unsigned decimal number
%f/%F  float
%e/%E  ?(real number exponent ?)
%g/%G  according to size, if size is small, %f/ if big is, %e
%x/%X  hexadecimal number
%o octal number
%n  line feed

알뜰폰 삼성페이 교통카드 '한도 초과' 오류(등록 불가 오류) 해결방법

sk7mobile 알뜰폰 삼성페이 교통카드 등록 시, 한도 초과 문제 해결방법 skt usim 해킹 사건으로 인해 sk7mobile 알뜰폰을 사용하는 저도 usim을 바꾸고 나니 삼성페이 교통카드가 등록이 안되더라구요...  삼성페이 교통카드 기능 은...