jcoffey-dev
5d417f3c4c
The scripts were attributed to LINUXexpert.org, which is being retired as a site and is no longer where this work lives. Coffey Labs is the organisation these projects belong to. One line per script, fifteen of them, and nothing else. LICENSE is deliberately untouched: its "Copyright (C) <year> <name of author>" lines are GPL boilerplate showing you how to write your own notice, and the Free Software Foundation's own copyright on the licence text is not ours to edit. Both git contributors are the same person, so there is no third-party copyright here that could not be restated.
67 lines
2.4 KiB
Bash
67 lines
2.4 KiB
Bash
#!/bin/bash
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# process_monitor.sh - Show top processes and allow killing by name or PID
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#
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# Copyright (C) 2025 Coffey Labs
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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: process_monitor.sh [kill <process_name|PID>]
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# Description: Without args, shows top CPU & memory processes. With "kill", terminates process by name or PID.
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# The kill path prints what it matched and asks first -- pkill by name
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# can match more than one process. Set FORCE=1 to skip the prompt.
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set -euo pipefail
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if [ "${1:-}" = "kill" ]; then
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target="$2"
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if [ -z "$target" ]; then
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echo "Usage: $0 kill <process_name|PID>"; exit 1
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fi
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# Show what will be signalled and confirm first. pkill -x by name can
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# match several processes at once, and as root that is an easy way to
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# take down more than intended with no warning.
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if [[ "$target" =~ ^[0-9]+$ ]]; then
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if ! ps -p "$target" -o pid,user,comm >/dev/null 2>&1; then
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echo "No process with PID $target."; exit 1
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fi
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ps -p "$target" -o pid,user,comm
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else
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if ! pgrep -x "$target" >/dev/null 2>&1; then
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echo "No process named '$target'."; exit 1
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fi
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pgrep -x -a "$target"
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fi
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if [ "${FORCE:-}" != "1" ]; then
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if [ ! -t 0 ]; then
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echo "Refusing to kill without confirmation; set FORCE=1 for unattended use." >&2
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exit 1
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fi
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read -r -p "Send SIGTERM to the above? (yes/NO): " reply
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[ "$reply" = "yes" ] || { echo "Cancelled."; exit 0; }
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fi
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if [[ "$target" =~ ^[0-9]+$ ]]; then
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kill "$target" && echo "Process $target signalled." || echo "Failed to signal process $target."
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else
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pkill -x "$target" && echo "Processes named '$target' signalled." || echo "Failed to signal '$target'."
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fi
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exit 0
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fi
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echo "==== Top 5 CPU-consuming processes ===="
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ps -eo pid,user,comm,%cpu --sort=-%cpu | head -n 6 || true
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echo -e "\n==== Top 5 Memory-consuming processes ===="
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ps -eo pid,user,comm,%mem --sort=-%mem | head -n 6 || true
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