Encrypt files with cryptomator
cryptomator is open source software that allow you to encrypt files. It is useful to store files in public cloud like dropbox, google drive securely. https://cryptomator.org On Download page, you will be asked to pay, this is more like donation,
awk
awk is a command line tool for pattern scanning and processing. Here are some examples of awk in action. In this example awk split text using space. Print first part. $0 means full line, $1 first part, $2 second part
Encrypt folder before storing on Cloud with EncFS
You can use encfs to encrypt a folder in real time. This is useful if you want to sync sensitive information to cloud backup providers like dropbox. To install encfs, run To created an encrypted folder,run Here /path/to/encrypted-files will have
irc
irc is internet relay chat. Here are some of the useful commands /list List all channels available /join #ChannelName Join a channel /nick YOURNAME Change your IRC user name Web based IRC Chat clients https://webchat.freenode.net/ Command Line IRC Chat clients
Uploading files to Amazon s3 with s3cmd
s3cmd allows you to upload files and folders to Amazon S3 or sites that support Amazon S3 API for example www.s3for.me Installing s3cmd You can download latest version of s3cmd from https://github.com/s3tools/s3cmd/releases/ To install version 2.0.0 (latest at the time
Encrypt files
Here are some ways you can encrypt files on a linux system. GPG To encrypt a file with gpg, run You will be asked to enter password. Example boby@hon-pc-01:~$ gpg –symmetric –cipher-algo AES256 -o forums.txt.secure ~/work/MY_FILES/forums.txt boby@hon-pc-01:~$ To decrypt, run
Last logged in users
last is a command used to list last logged in users on a linux system. [root@m3722 ~]# last root pts/0 112.133.248.3 Wed Jul 19 21:55 still logged in root pts/0 112.133.248.3 Tue Jul 18 19:58 – 20:00 (00:01) root pts/0
CentOS 7 rc.local not working
To get /etc/rc.local working on CentOS 7, first you need to set it executable. Now enable rc-local service with command Now start service. Verify it is running properly
Server Load – Disk I/O
Here are some commands to monitor and identify Disk I/O related server loads. iostat iostat give stats about disk i/o usage. Some of the important values are * %iowait = if this value is higher, your server is waiting on
Server Load
When your server is under load, you need to identify the bottleneck. This can be CPU, Memory or Disk IO. Here are some of the useful commands that help you identify cause of high server load. uptime uptime is the
