Linux command: Check Current Shell

What is your current shell?

Ways to find current shell.

echo SHELL variable

$ echo $SHELL
/bin/sh

red-stone-one-carat% echo $SHELL
/bin/rzsh
red-stone-one-carat%

$ echo $0
/bin/sh

Look for SHELL variable when run env command

$ env
MAIL=/var/mail/learnlinuxfree
USER=learnlinuxfree
SSH_CLIENT=58.187.170.49 6126 22
HOME=/home/learnlinuxfree
SSH_TTY=/dev/pts/2
LOGNAME=learnlinuxfree
TERM=xterm
XDG_SESSION_ID=9760
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games
XDG_RUNTIME_DIR=/run/user/1002
LANG=en_US.UTF-8
SHELL=/bin/sh
PWD=/home/learnlinuxfree
SSH_CONNECTION=58.187.170.49 6126 173.82.240.78 22

List of available shells on a system

$ cat /etc/shells
# /etc/shells: valid login shells
/bin/sh
/bin/dash
/bin/bash
/bin/rbash
/usr/bin/tmux

Change default shell for user

root@3:~# which usermod
/usr/sbin/usermod
root@3:~# usermod --shell /bin/bash tuyendq
root@3:~#

List of common shells

/bin/sh — Bourn shell
/bin/bash — Bourn Again shell

[Microsoft Outlook]: Set .pst and .ost files location with ForcePSTPath Registry Key

Set .pst and .ost files location with ForcePSTPath Registry Key The ForcePSTPath registry key is supported by Microsoft Outlook 2003 and later. In Microsoft Outlook 2003 and 2007, it applies to new profiles only. Microsoft Outlook 2013 and Outlook 2016 it applies to new accounts created in a profile. Microsoft Outlook 2013 saves .pst in %userprofile%\Documents\Outlook Files folder by default. We can change that default setting by adding a new string registry key called ForcePSTPath and set the value to the folder that we want to save those files. Set Microsoft Outlook 2013 always save new .pst and .ost files to D:\Data\Mail folder OST file reached the maximum size The OST File Has Reached The Maximum Size

Powershell: Test-NetConnection

PS C:\Users\tuyen> get-help Test-NetConnection NAME Test-NetConnection SYNTAX Test-NetConnection [[-ComputerName] <string>] [-TraceRoute] [-Hops <int>] [-InformationLevel {Quiet | Detailed}] [<CommonParameters>] Test-NetConnection [[-ComputerName] <string>] [-CommonTCPPort] {HTTP | RDP | SMB | WINRM} [-InformationLevel {Quiet | Detailed}] [<CommonParameters>] Test-NetConnection [[-ComputerName] <string>] -Port <int> [-InformationLevel {Quiet | Detailed}] [<CommonParameters>] Test-NetConnection [[-ComputerName] <string>] -DiagnoseRouting [-ConstrainSourceAddress <string>] [-ConstrainInterface <uint32>] [-InformationLevel {Quiet | Detailed}] [<CommonParameters>] ALIASES TNC REMARKS Get-Help cannot find the Help files fo...

Powershell: Install IIS

Run Powershell as Administrator, then run the command below to install IIS. Install-WindowsFeature Web-WebServer Check after installing Get-WindowsFeature *Web*

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