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## Env-format
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> 🕵️ **Operation Data Centre**
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>
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> [Confidential]
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>
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> You are on a secret mission inside an underground data centre. You are alone, there is no internet access and there is no mobile phone signal.
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>
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> You cannot interact with anyone.
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>
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> You cannot not access the internet - although you can read the mission below.
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>
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> You may access man pages via the command line. This is your only resource.
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>
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> Good luck agent, we're counting on your knowledge.
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### Instructions
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Create a script `env-format.sh`, which will print the environment variables that have the following formats:
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- Print the `PWD` value.
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- All the environment variables that have a letter `H` in the name, without printing the value of those variables.
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```console
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$ printenv
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SHELL=/bin/bash
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QT_ACCESSIBILITY=1
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NVM_RC_VERSION=
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COLORTERM=truecolor
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HOMEBREW_PREFIX=/home/linuxbrew/.linuxbrew
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DESKTOP_SESSION=i3
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...
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PWD=/home/user
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LOGNAME=user
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MANPATH=/home/linuxbrew/.linuxbrew/share/man:
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XDG_SESSION_DESKTOP=i3
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XAUTHORITY=/run/user/1000/gdm/Xauthority
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WINDOWPATH=2
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SHELL=/bin/bash
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SSH_AGENT_PID=2900
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HOME=/home/user
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HOMEBREW_SHELLENV_PREFIX=/home/linuxbrew/.linuxbrew
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USERNAME=user
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$
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```
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Expected output:
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```console
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$ ./env-format.sh
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/home/user/Documents/public/sh/tests/student
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SHELL
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SSH_AGENT_PID
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HOMEBREW_SHELLENV_PREFIX
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MANPATH
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XAUTHORITY
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WINDOWPATH
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HOME
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$
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```
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