Linux Shell Script For Log Analyzer Script
Log Analyzer Script:
#!/bin/bash
logfile="/path/to/logfile.log"
# Extract lines with "ERROR" from the log file
grep "ERROR" "$logfile" > error_log.txt
echo "Error log created."
Here's a shell script that interacts with a Python log analyzer script (assuming you have the Python script log_analyzer.py already created as per the previous example):
#!/bin/bash
# Path to the log file
LOG_FILE="example.log"
# Filter level (set to "ERROR" for this example)
FILTER_LEVEL="ERROR"
# Check if log file exists
if [ ! -f "$LOG_FILE" ]; then
echo "Error: Log file '$LOG_FILE' not found."
exit 1
fi
# Run the Python log analyzer script
python3 log_analyzer.py "$LOG_FILE" "$FILTER_LEVEL"
Explanation:
Shebang Line (#!/bin/bash):
Specifies that this script should be executed using bash.
Variables:
LOG_FILE: Path to the log file (example.log in this case).
FILTER_LEVEL: Specifies the log level to filter (e.g., "ERROR"). Modify as needed.
Existence Check:
if [ ! -f "$LOG_FILE" ]; then ... fi: Checks if the log file exists (-f checks for regular file existence).
Running the Python Script:
python3 log_analyzer.py "$LOG_FILE" "$FILTER_LEVEL": Executes the Python script log_analyzer.py with the log file path ($LOG_FILE) and the filter level ($FILTER_LEVEL) as arguments.
Usage:
Make sure the Python script log_analyzer.py is saved and located in the same directory as this shell script.
Adjust LOG_FILE and FILTER_LEVEL variables as per your actual log file and filtering requirements.
Run the shell script (./log_analyzer.sh) to execute the log analysis.
Notes:
Ensure that Python (python3) is installed and accessible in your environment.
Modify the Python script log_analyzer.py if you need to adapt it further based on specific log formats or analysis requirements.
You can extend the shell script to handle additional functionalities such as handling different log files, changing filter levels interactively, or logging the results to another file.
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