The most effective Highlight Sets are focused and intentional. Avoid the temptation to highlight too many patterns. A terminal where everything is highlighted becomes just as difficult to read as one with no highlighting at all. Prioritize the truly critical information you need to spot quickly.
: You can assign a specific Highlight Set to a session permanently by navigating to the Session Properties > Appearance category.
XShell highlight sets shift your terminal experience from manual text skimming to proactive visual monitoring. By automating the identification of errors, warnings, and system metrics through literal strings and powerful regular expressions, you significantly lower your mean time to resolution (MTTR) during system outages. Take fifteen minutes today to build a tailored highlight set for your environment—your eyes will thank you during your next late-night debugging session.
: Check this if "Error" should be highlighted but "error" should not.
XShell, a powerful terminal emulator developed by NetSarang, offers a built-in solution to this problem: . This feature allows you to automatically color-code specific keywords, regular expressions, and patterns in real-time. By implementing custom highlight sets, you can transform your terminal from a wall of text into a highly visual, easily scannable dashboard. xshell highlight sets
\b4[0-9]2\b (Matches 400, 401, 404, etc.) Recommended Style: Yellow text or orange background. 3. Tracking Timestamps
: If you are Session Logging , highlights help you spot critical data points quickly when reviewing the log later in the built-in log viewer.
Open the ( Alt + O ) and right-click your desired session, then select Properties . In the categories tree on the left, navigate to Appearance . Locate the Highlight Set dropdown menu in the right pane. Select your custom highlight set from the list. Click OK to apply and save changes. Advanced Pattern Matching with Regular Expressions (Regex)
To flag server errors (5xx) and client errors (4xx) in Apache or Nginx logs: The most effective Highlight Sets are focused and
A dialog window will appear showing your existing sets (by default, this may be empty or contain a standard template). Step 2: Create a New Set Click the button on the right side of the dialog box.
By implementing structured highlight sets, you transform your terminal from a dense wall of text into an intuitive, scannable dashboard. What are Xshell Highlight Sets?
To select a Color Scheme:
act as a real-time filter for your eyes. By defining a set of rules, you can instruct Xshell to: Bold and Redden error keywords to grab immediate attention. Highlight IP addresses or URLs in blue to make them stand out for quick copying. Diminish "Noise" by graying out repetitive info messages (like ), allowing the important data to "pop." Customization and Efficiency The true strength of this feature lies in its Regular Expression (Regex) Prioritize the truly critical information you need to
Provide a descriptive name for your set (e.g., Log_Monitor or Cisco_Router ). Step 3: Adding Keywords and Definitions Select your newly created set and click . Click Add to create a new keyword rule.
Isolate specific IP addresses, status codes (e.g., HTTP 404 or 500 ), or user IDs in dense log files.
: Perfect for background noise like dates, time zones, and process IDs, pushing them into the visual background so important data pops out. 2. Avoid Background Color Overuse
Check the box if you want the rule to be strictly case-sensitive. In the Style section, customize how the text will appear: Text Color : Choose a high-contrast foreground color.
| Keyword/Pattern | Typical Color | Purpose | |----------------|---------------|---------| | ERROR , FATAL | Red background + white text | Immediate attention | | WARNING , WARN | Yellow text | Caution | | SUCCESS , OK , PASS | Green text | Positive status | | INFO | Cyan text | General information | | DEBUG | Gray text | Low priority | | [0-9]+ ms | Blue text | Highlight durations | | FAILED , Exception , NullPointer | Red text + bold | Errors | | TODO , FIXME | Magenta text | Reminders |