71 lines
2.7 KiB
Bash
71 lines
2.7 KiB
Bash
#!/usr/bin/env bash
|
|
# ------------------------------------------------------------------------------
|
|
# Copyright (c) 2013-2022 Geoffray Levasseur <fatalerrors@geoffray-levasseur.org>
|
|
# Protected by the BSD3 license. Please read bellow for details.
|
|
#
|
|
# * Redistribution and use in source and binary forms,
|
|
# * with or without modification, are permitted provided
|
|
# * that the following conditions are met:
|
|
# *
|
|
# * Redistributions of source code must retain the above
|
|
# * copyright notice, this list of conditions and the
|
|
# * following disclaimer.
|
|
# *
|
|
# * Redistributions in binary form must reproduce the above
|
|
# * copyright notice, this list of conditions and the following
|
|
# * disclaimer in the documentation and/or other materials
|
|
# * provided with the distribution.
|
|
# *
|
|
# * Neither the name of the copyright holder nor the names
|
|
# * of any other contributors may be used to endorse or
|
|
# * promote products derived from this software without
|
|
# * specific prior written permission.
|
|
# *
|
|
# * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
|
|
# * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
|
# * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
# * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
# * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
|
|
# * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
# * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
# * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
# * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
# * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
# * OF SUCH DAMAGE.
|
|
# ------------------------------------------------------------------------------
|
|
|
|
# ------------------------------------------------------------------------------
|
|
# Make non-IT peoples think you're busy doing something hard
|
|
# ------------------------------------------------------------------------------
|
|
busy()
|
|
{
|
|
local pattern="ca fe"
|
|
for arg in "$@"; do
|
|
case "$arg" in
|
|
--delay=*)
|
|
delay_ms="${arg#*=}"
|
|
if ! [[ $delay_ms =~ ^[0-9]+$ ]]; then
|
|
disp E "Invalid delay value, must be an integer (milliseconds)."
|
|
return 1
|
|
fi
|
|
;;
|
|
*)
|
|
pattern="$arg"
|
|
;;
|
|
esac
|
|
done
|
|
|
|
# Convert milliseconds to seconds for 'sleep'
|
|
local delay_s=$(awk "BEGIN { printf \"%.3f\", $delay_ms / 1000 }")
|
|
|
|
cat /dev/urandom | hexdump -C | grep --line-buffered "$pattern" | \
|
|
while read -r line; do
|
|
echo $line
|
|
[[ $delay_ms -gt 0 ]] && sleep "$delay_s"
|
|
done
|
|
unset pattern
|
|
}
|
|
|
|
# ------------------------------------------------------------------------------
|
|
# EOF
|