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config/tmux-oneshot.sh

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#!/bin/bash
# tmux-oneshot.sh
# Run a single command in a tmux session
# Load config file if it exists
SCRIPT_DIR=$(dirname "$0")
SCRIPT_NAME=$(basename "$0" .sh)
CONFIG_FILE="${SCRIPT_DIR}/${SCRIPT_NAME}.conf"
if [ -f "$CONFIG_FILE" ]; then
echo "Loading config from $CONFIG_FILE"
source "$CONFIG_FILE"
else
echo "Config file $CONFIG_FILE not found, generating template..."
cat > "$CONFIG_FILE" << 'EOF'
# tmux-oneshot.conf
# Configuration file for tmux-oneshot.sh
# Session name (leave empty to use first word of command)
SESSION=""
# For multiple commands, use an array:
# COMMANDS=("ssh root@server" "sudo su" "password123")
COMMANDS=()
# Whether to attach to session after running command (0 or 1)
ATTACH_SESSION=0
EOF
echo "Generated $CONFIG_FILE with default values. Please edit and run again."
exit 0
fi
# Validate required variables
if [ -z "$SESSION" ] && [ ${#COMMANDS[@]} -eq 0 ]; then
echo "Error: Either SESSION or COMMANDS must be set in $CONFIG_FILE" >&2
exit 1
fi
# Use command line arguments if provided, otherwise use config
if [ $# -gt 0 ]; then
COMMANDS=("$*")
echo "Using command line arguments: $*"
else
if [ ${#COMMANDS[@]} -eq 0 ]; then
echo "Error: No commands provided and no commands set in config" >&2
exit 1
fi
echo "Using config commands: ${COMMANDS[*]}"
fi
# Use session name from config, or first word of first command if not set
if [ -z "$SESSION" ]; then
SESSION=$(echo "${COMMANDS[0]}" | awk '{print $1}')
fi
# Create session if missing
if ! tmux has-session -t $SESSION 2>/dev/null; then
echo "Creating tmux session: $SESSION"
tmux new-session -d -s $SESSION
else
echo "Session $SESSION exists, reusing..."
fi
# Send command(s) to session using temporary scripts (like tmux-daemon.sh)
echo "Running commands: ${COMMANDS[*]}"
for cmd in "${COMMANDS[@]}"; do
echo "Running: $cmd"
# Create temporary script to run command (preserves special characters)
tmpfile=$(mktemp)
cat >"$tmpfile" <<EOF
#!/bin/bash
$cmd
EOF
chmod +x "$tmpfile"
tmux send-keys -t $SESSION "$tmpfile" C-m
sleep 1 # Brief pause between commands
done
if [ $ATTACH_SESSION -eq 1 ]; then
echo "Attaching to tmux session: $SESSION"
tmux attach -t $SESSION
fi