Grab environment

grabenv

#!/bin/sh

XPROC="dbus-launch"
XPID=""
TARGET="$1"

if [ ! -z "$TARGET" ]; then
    # Target is specified, check is it PID or process name
    if echo "$TARGET" | grep -Eq '^[0-9]+$'; then
        # Target is number, use it as PID
        XPID="$TARGET"
        XPROC=""
    else
        # Target is not number, use it as process name
        XPROC="$TARGET"
    fi
fi

if [ -z "$XPID" ]; then
    # Find PID for process name started by current user
    XPID=$(pgrep -u "$(whoami)" "$XPROC" | head -n 1)
fi

if [ ! -r "/proc/$XPID/environ" ]; then
    echo "Failed to grab environment from $XPROC($XPID)" >&2
    exit 1
else
    xargs -r0 -n1 echo export < "/proc/$XPID/environ"
fi