Сигнал о завершении процесса

pr="${1:-cc1\|make}"

^Z
bg && wait && beep

#  apt-get install dpkg-dev libncurses5-dev  kernel-package fakeroot bzip2 build-essential

# uname -a
Linux asus 4.4.0-119-generic #143+8.0trisquel2 SMP Thu Apr 5 16:24:48 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

# ls /boot
abi-4.4.0-119-generic     grub                          retpoline-4.4.0-119-generic   vmlinuz-4.4.0-119-generic
config-4.4.0-119-generic  initrd.img-4.4.0-119-generic  System.map-4.4.0-119-generic


# apt-cache search linux-source
linux-source-4.4.0 - Linux-libre kernel source for version 4.4.0
linux-source - Linux kernel source with Ubuntu patches
linux-source-4.13.0 - Linux-libre kernel source for version 4.13.0
linux-source-4.8.0 - Linux-libre kernel source for version 4.8.0

# apt-get source linux-source-4.13.0

# ls
linux-hwe-4.13.0  linux-hwe_4.13.0-45.50~16.04.1+8.0trisquel1.dsc  linux-hwe_4.13.0-45.50~16.04.1+8.0trisquel1.tar.gz 

# cd linux-hwe-4.13.0

# make O=/home/user/kernel/mybuild menuconfig

загрузил  конфиг из /boot/config-4.4.0-119-generic, отключил две опции: IRDA и Bluetooth, сохранил конфиг в /home/user/kernel/mybuild/.config

# make O=/home/user/kernel/mybuild 

/bin/bash /home/y/kernel/linux-hwe-4.13.0/scripts/ubuntu-retpoline-extract-one arch/x86/crypto/sha1-mb/sha1_mb_mgr_submit_avx2.o /home/y/kernel/linux-hwe-4.13.0/arch/x86/crypto/sha1-mb/sha1_mb_mgr_submit_avx2.S "";
  AS [M]  arch/x86/crypto/sha1-mb/sha1_x8_avx2.o
/bin/bash /home/y/kernel/linux-hwe-4.13.0/scripts/ubuntu-retpoline-extract-one arch/x86/crypto/sha1-mb/sha1_x8_avx2.o /home/y/kernel/linux-hwe-4.13.0/arch/x86/crypto/sha1-mb/sha1_x8_avx2.S "";
  LD [M]  arch/x86/crypto/sha1-mb/sha1-mb.o
  AS      arch/x86/entry/entry_64.o
Segmentation fault
/home/y/kernel/linux-hwe-4.13.0/scripts/Makefile.build:419: ошибка выполнения рецепта для цели «arch/x86/entry/entry_64.o»
make[3]: *** [arch/x86/entry/entry_64.o] Ошибка 139
/home/y/kernel/linux-hwe-4.13.0/scripts/Makefile.build:589: ошибка выполнения рецепта для цели «arch/x86/entry»
make[2]: *** [arch/x86/entry] Ошибка 2
/home/y/kernel/linux-hwe-4.13.0/Makefile:1055: ошибка выполнения рецепта для цели «arch/x86»
make[1]: *** [arch/x86] Ошибка 2
make[1]: выход из каталога «/home/y/kernel/mybuild»
Makefile:145: ошибка выполнения рецепта для цели «sub-make»
make: *** [sub-make] Ошибка 2

#!/bin/bash

#play music when cpu usage lower then X%

#cpu usage lowest level
u=20
#delay between checks
delay=5


function cpu_usage() {
  # Read /proc/stat file (for first datapoint)
  read cpu user nice system idle iowait irq softirq steal guest< /proc/stat
  # compute active and total utilizations
  cpu_active_prev=$((user+system+nice+softirq+steal))
  cpu_total_prev=$((user+system+nice+softirq+steal+idle+iowait))
  sleep 0.05
  # Read /proc/stat file (for second datapoint)
  read cpu user nice system idle iowait irq softirq steal guest< /proc/stat
  # compute active and total utilizations
  cpu_active_cur=$((user+system+nice+softirq+steal))
  cpu_total_cur=$((user+system+nice+softirq+steal+idle+iowait))
  # compute CPU utilization (%)
  cpu_util=$((100*( cpu_active_cur-cpu_active_prev ) / (cpu_total_cur-cpu_total_prev) ))
  echo ${cpu_util%.*}
}



usage=$(cpu_usage)
until [ $usage -lt $u ]; do
  #usage - current cpu usage percent
  usage=$(cpu_usage)
  echo "CPU usage: " $usage " greater than" $u
  sleep $delay
done

echo 'CPU is free'
mpv '/home/user/Music/Katya_Chehova_-_My_Vmeste.mp3'

#!/bin/bash

#play music when cpu usage lower than X%
#and TCP incoming traffic is less than Y

#cpu usage lowest level
u=20
#delay between checks of cpu
delay=8
#counter - how many times of cpu low level usage
#makes us know cpu is not using
cnt=5
#delay between counter
delay_c=5
#time tcp usage (seconds) that need to count packages
tcp_time=2
#tcp received packages (that expects as the network is using)
tcp=50

date_start=$(date)

function cpu_usage() {
  # Read /proc/stat file (for first datapoint)
  read cpu user nice system idle iowait irq softirq steal guest< /proc/stat
  # compute active and total utilizations
  cpu_active_prev=$((user+system+nice+softirq+steal))
  cpu_total_prev=$((user+system+nice+softirq+steal+idle+iowait))
  sleep 0.05
  # Read /proc/stat file (for second datapoint)
  read cpu user nice system idle iowait irq softirq steal guest< /proc/stat
  # compute active and total utilizations
  cpu_active_cur=$((user+system+nice+softirq+steal))
  cpu_total_cur=$((user+system+nice+softirq+steal+idle+iowait))
  # compute CPU utilization (%)
  cpu_util=$((100*( cpu_active_cur-cpu_active_prev ) / (cpu_total_cur-cpu_total_prev) ))
  echo ${cpu_util%.*}
}

function inet_usage() {
  #Check received TCP packages
  sec=$1
  time1=$(netstat -A inet -s | grep '[0-9][0-9]* segments received' | awk '{print $1}')
  sleep $sec
  time2=$(netstat -A inet -s | grep '[0-9][0-9]* segments received' | awk '{print $1}')
  diff=$(($time2-$time1))
  echo $diff
}

echo "Start date: " && date

c=$cnt
until [ $c -le 0 ]; do
  cpu_usage=$(cpu_usage)
  until [ $cpu_usage -lt $u ]; do
    #cpu_usage - current cpu usage percent
    echo "CPU usage: " $cpu_usage " greater than" $u
    cpu_usage=$(cpu_usage)
    c=$cnt
    sleep $delay
  done
  inet_usage=$(inet_usage $tcp_time)
  until [ $inet_usage -lt $tcp ]; do
    #inet_usage - quantity of received tcp packages
    echo "Inet usage: " $inet_usage " greater than" $tcp
    inet_usage=$(inet_usage $tcp_time)
    c=$cnt
    sleep $delay
  done
  let c-=1
  echo counter $c from $cnt
  echo sleep $delay_c
  sleep $delay_c
done

echo 'CPU is free'
echo 'Inet is free'
echo "Start date was" $date_start
echo "Now is" && date
mpv '/home/user/Music/two_door_cinema_club_what_you_know_ollaboration_cover.mp3'