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How to set commands output as a variable in a batch file
...p; store in a variable:
(illustrates piping)
FOR /F %i IN ('dir /b /a-d "%cd%" ^| find /v /c "?"') DO set /a count=%i
Note the use of single quotes instead of double quotes " or grave accent ` in the command brackets. This is cleaner alternative to delims, tokens or usebackq in for loop.
Tested ...
蓝牙BLE设备使用BLE拓展连不上蓝牙？ - 创客硬件开发 - 清泛IT社区，为创新赋能！
转会员问题：我现在手上有一款蓝牙设备是BLE的， 我在编程都时候用了ble的拓展组件 但是在连接那一步连不上这个蓝牙？
这里统一说明一下：
一般先用硬件厂商提供的App 或者 nRF Connect App 进行硬件连接和测试，没...
ble 蓝牙透传代码怎么写？ - 创客硬件开发 - 清泛IT社区，为创新赋能！
转：咨询一下，我蓝牙透传，用我们这个模块这个地址可以吗？
上图中是控制服务id：SERVICEF000_UUUID = UUID.fromString("0000f000-0000-1000-8000-00805f9b34fb");以及2个控制端口的特征id。
可以做到透传，不过要换透传 id，这个 id ...
Authenticate Jenkins CI for Github private repository
...d for the Jenkins user.
Here are the steps:
sudo su jenkins -s /bin/bash
cd ~
mkdir .ssh // may already exist
cd .ssh
ssh-keygen
Now you can create a Jenkins credential using the SSH key
On Jenkins dashboard
Add Credentials
select this option
Private Key: From the Jenkins master ~/.ssh
...
PostgreSQL - how to quickly drop a user with existing privileges
... answered May 2 '19 at 21:54
CD4CD4
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bat 写注册表详解 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...ENDIAN | REG_NONE | REG_EXPAND_SZ ] 如果忽略则采用 REG_SZ
/s 指定一个在 REG_MULTI_SZ 数据字符串中用作分隔符的字符。如果忽略则将 "\0" 用作分隔符
/d 要分配给添加的注册表 ValueName 的数据
/f 不用提示就强行改写现有注册表项
例如...
内网时间同步问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...-通讯层------应用层-----数据库层现在的问题是数据库层每一个月时间会快上那么一分钟解决方法使用CISCO通讯...标准的三层网络结构，
INT网-----通讯层------应用层-----数据库层 现在的问题是数据库层每一个月时间会快上那么一...
Setting the MySQL root user password on OS X
...eed to change the root password use the following:
Change root password:
cd /usr/local/mysql/bin/
./mysql -u root -p
> Enter password: [type old password invisibly]
use mysql;
update user set password=PASSWORD("NEW_PASSWORD_HERE") where User='root';
flush privileges;
quit
...
How to export query result to csv in Oracle SQL Developer?
...
In my case the Spatial Data Type (docs.oracle.com/cd/B19306_01/appdev.102/b14255/…) were being exported like this (notice the commas) MDSYS.SDO_GEOMETRY(2001,8307,MDSYS.SDO_POINT_TYPE(-122.39096,37.79251,NULL),NULL,NULL) without being wrapped in quotes. And I'm using dynam...
Connect to Amazon EC2 file directory using Filezilla and SFTP
...iles / dirs
To download path/to/source/file.txt and path/to/source/dir:
lcd ~/Desktop
cd path/to/source
get file.txt
get -r dir
Uploading files / dirs
To upload localpath/to/source/file.txt and ~/localpath/to/source/dir to remotepath/to/dest:
lcd localpath/to/source
cd remotepath/to/dest
put f...