| Purpose | Regex Pattern | Style | | :--- | :--- | :--- | | VLAN IDs | \bVLAN\s?\d1,4\b | Magenta text | | IP Addresses | \b(?:\d1,3\.)3\d1,3\b | Blue text (Caution: can be noisy) | | MAC Addresses | [a-fA-F0-9]4\.[a-fA-F0-9]4\.[a-fA-F0-9]4 | Bright Blue text | | AS Numbers | \bAS[_\s]?\d+\b | Magenta background |
If you want, I can generate a ready-to-import Xshell highlight XML/JSON file with these rules — tell me which exact colors and whether you prefer light or dark terminal theme.
. By color-coding specific keywords and patterns, these sets transform dense, monochromatic command-line output into easily readable data, allowing for faster troubleshooting and reduced human error. The Value of Highlighting in Cisco Environments
\b(GigabitEthernet|TenGigabitEthernet|FastEthernet|Ethernet|Vlan|Loopback|Port-channel)[0-9/\.]+\b xshell highlight sets cisco
I can analyze which is better for your specific Cisco environment.
You will need to add specific rules. For each rule, define the Regular Expression and the Foreground/Background colors.
: Add specific strings. For exact matches (e.g., ensuring "DOWN" is highlighted but not "DOWNLOAD"), Xshell supports boundary markers like Regular Expression option is checked netsarang.atlassian.net Visual Styling | Purpose | Regex Pattern | Style |
AS numbers / BGP neighbors
down , administratively down , shutdown , FAIL , FAILED , ERROR , CRITICAL , drop , deny
For network engineers, the command line is a second home. Whether you are troubleshooting a BGP flap, reviewing a running configuration, or monitoring logs on a Cisco Catalyst or ASR router, the sheer volume of text output can be overwhelming. In a sea of white-on-black (or green-on-black) text, how do you spot a critical error, a hidden warning, or a specific IP address in milliseconds? : Add specific strings
Use Xshell’s Highlight dialog to add these. Put each pattern as a separate rule (regex recommended). Choose contrasting colors (foreground or background) and disable “Match case” if needed.
Whether you manually enter the rules provided above or import a community share file, the time invested in setting up your Xshell environment will pay off every single day you spend on the command line. It transforms Xshell from a simple conduit for text into a powerful assistant that helps you see exactly what you need, when you need it.
Use this to instantly verify that a command executed correctly, such as when an interface is "connected" or a route is "accepted".
With a proper Xshell highlight set, "down" instantly turns and bold. "Err-disable" flashes magenta . "BGP neighbor established" glows green . Your brain processes the color before you even read the words.
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