power menu, redshift, polybar

.config/polybar/scripts/inbox-pop3-shellnetrc/.netrc

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+machine mail.server.tld
+    login username
+    password supersecretpw

.config/polybar/scripts/inbox-pop3-shellnetrc/README.md

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+# Script: inbox-pop3-shellnetrc
+
+A script that shows if there are unread mails in your POP3 inbox.
+
+This script actually use POP3s. `curl` can also handle unencrypted POP3. You only need to change the protocol in the command.
+
+The login data is stored in a `.netrc`. This is more secure because the password is not visible in the process list.
+
+
+## Dependencies
+
+* `curl`
+
+
+## Module
+
+```ini
+[module/inbox-pop3-shellnetrc]
+type = custom/script
+exec = ~/polybar-scripts/inbox-pop3-shellnetrc.sh
+interval = 60
+```

.config/polybar/scripts/inbox-pop3-shellnetrc/inbox-pop3-shellnetrc.sh

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+#!/bin/sh
+
+SERVER=""
+NETRC=".netrc"
+
+inbox=$(curl -sf --netrc-file "$NETRC" pop3s://"$SERVER" | wc -l)
+
+if [ "$inbox" -gt 0 ]; then
+    echo "# $inbox"
+else
+    echo ""
+fi