52 lines
1.7 KiB
Bash
52 lines
1.7 KiB
Bash
#!/bin/bash
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# log_inspect.sh - Search or tail system log files
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#
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# Copyright (C) 2025 LINUXexpert.org
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
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# Free Software Foundation, version 3 of the License.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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# for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program. If not, see <https://www.gnu.org/licenses/>.
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#
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# Usage: log_inspect.sh [search <pattern> | tail <logfile>]
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# Description: Searches across /var/log for a pattern, or tails a specific log file.
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if [ "$1" = "search" ]; then
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pattern="$2"
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if [ -z "$pattern" ]; then
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echo "Usage: $0 search <pattern>"; exit 1
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fi
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echo "Searching for '$pattern' in /var/log..."
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grep -R -i --color=auto "$pattern" /var/log 2>/dev/null
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exit 0
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elif [ "$1" = "tail" ]; then
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logfile="$2"
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if [ -z "$logfile" ]; then
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echo "Usage: $0 tail <log_file_path>"; exit 1
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fi
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if [ ! -f "$logfile" ]; then
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echo "Log file '$logfile' not found."; exit 1
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fi
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echo "== Last 100 lines of $logfile =="
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tail -n 100 "$logfile"
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exit 0
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else
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# Default: tail the main system log (syslog or messages)
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if [ -f /var/log/syslog ]; then
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echo "== Last 50 lines of /var/log/syslog =="
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tail -n 50 /var/log/syslog
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elif [ -f /var/log/messages ]; then
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echo "== Last 50 lines of /var/log/messages =="
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tail -n 50 /var/log/messages
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else
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echo "No syslog or messages log found."
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fi
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fi
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