diff --git a/Script/alias_main b/Script/alias_main
index 7298454..42cb338 100755
--- a/Script/alias_main
+++ b/Script/alias_main
@@ -1,5 +1,6 @@
 #!/bin/bash
 
+source "${alias_dir}/crontab"
 source "${alias_dir}/install"
 source "${alias_dir}/pdf"
 source "${alias_dir}/hdd"
diff --git a/Script/backup b/Script/backup
index ce15ef1..a8cf6aa 100644
--- a/Script/backup
+++ b/Script/backup
@@ -61,81 +61,106 @@ backup_delete_old_files_by_date()
 }
 mkalias_with_prefix 'backup_delete_old_files_by_date'
 
+backup_date_day()
+{
+    echo "$(date +%Yy_%mm_%dd-%Vv)"
+}
+mkalias_with_prefix 'backup_date_day'
+
 backup_date()
 {
-    echo "$(date +%Yy_%mm_%dd-%Vv-%Hh_%Mm_%Ss)"
+    day=$(backup_date_day)
+    echo "${day}-$(date +%Hh_%Mm_%Ss)"
 }
 mkalias_with_prefix 'backup_date'
 
+exclude_mozilla='
+--exclude=.mozilla/firefox/*/Cache 
+--exclude=.mozilla/firefox/*/storage/*/https* 
+--exclude=.mozilla/firefox/*/storage/*/http* 
+--exclude=.mozilla/firefox/*/storage/*/file*
+'
+
 backup_firefox()
 {
-    backup_dir=$1
-    [ "$backup_dir" = '' ] && printf "Укажите папку для бекапа\n" && return
+    eval $(mkvar 'backup_dir|$1||Укажите папку для бекапа')
+    eval $(mkvar 'user|$2|$(whoami)')
     #ask_continue && return
-    cd ~
-    file="${backup_dir}/$(hostname)_mozilla_backup_$(backup_date).tgz"
+
+    file_add_name="mozilla_backup"
+    file_pref="${backup_dir}/$(hostname)_${user}_${file_add_name}_"
+    [ -f "${file_pref}$(backup_date_day)*" ] && printf "Сегодня уже делался бэкап\n" && return
+
+    file="${file_pref}$(backup_date).tgz"
+
     tar cvpzf "${file}" \
-        --exclude=.mozilla/firefox/*/Cache \
-        --exclude=.mozilla/firefox/*/storage/*/https* \
-        --exclude=.mozilla/firefox/*/storage/*/file* \
-        .mozilla
+        ${exclude_mozilla//'\n'/' '} \
+        /home/${user}/.mozilla
 
     echo "${file}"
 }
 mkalias_with_prefix 'backup_firefox'
 
+exclude_home='
+--exclude=*/Загрузки/* \
+--exclude=*/Backup/* \
+--exclude=*/Музыка/* \
+--exclude=MyProgs \
+--exclude=media \
+--exclude=private \
+--exclude=.thumbnails \
+--exclude=*/.cache/* \
+--exclude=/.config/chromium/*/CacheStorage \
+--exclude=*/.config/skypeforlinux/Cache \
+--exclude=.local \
+--exclude=.var/app/app.organicmaps.desktop/data \
+--exclude=.steam \
+--exclude=.smartgit/updates \
+--exclude=.wine*/*/windows/ \
+--exclude=.googleearth \
+--exclude=*/.Genymobile \
+--exclude=go/pkg \
+--exclude=.apt \
+--exclude=.npm \
+--exclude=.gradle \
+--exclude=Android \
+--exclude=build/intermediates \
+--exclude=build/*.obj \
+--exclude=chromium/*/WebStorage \
+--exclude=.android \
+--exclude=.VirtualBox/*.iso \
+'
+
 backup_home()
 {
-    backup_dir=$1
-    [ "$backup_dir" = '' ] && printf "Укажите папку для бекапа\n" && return
+    eval $(mkvar 'backup_dir|$1||Укажите папку для бекапа')
     #ask_continue && return
 
-    cd /home
-    file="${backup_dir}/$(hostname)_home_backup_$(backup_date).tgz"
+    file_add_name="home_backup"
+    file_pref="${backup_dir}/$(hostname)_${file_add_name}_"
+    [ -f "${file_pref}$(backup_date_day)*" ] && printf "Сегодня уже делался бэкап\n" && return
+
+    file="${file_pref}$(backup_date).tgz"
     sudo tar cvpzf "${file}" \
-        --exclude=*home_backup*.tgz \
-        --exclude=*/Загрузки/* \
-        --exclude=*/Backup/* \
-        --exclude=*/Музыка/* \
-        --exclude=MyProgs \
-        --exclude=media \
-        --exclude=private \
-        --exclude=.thumbnails \
-        --exclude=.mozilla/firefox/*/Cache \
-        --exclude=.mozilla/firefox/*/storage/*/https* \
-        --exclude=.mozilla/firefox/*/storage/*/file* \
-        --exclude=*/.cache/* \
-        --exclude=/.config/chromium/*/CacheStorage \
-        --exclude=*/.config/skypeforlinux/Cache \
-        --exclude=.local \
-        --exclude=.var/app/app.organicmaps.desktop/data \
-        --exclude=.steam \
-        --exclude=.smartgit/updates \
-        --exclude=.wine*/*/windows/ \
-        --exclude=.googleearth \
-        --exclude=*/.Genymobile \
-        --exclude=go/pkg \
-        --exclude=.apt \
-        --exclude=.npm \
-        --exclude=.gradle \
-        --exclude=Android \
-        --exclude=build/intermediates \
-        --exclude=build/*.obj \
-        --exclude=chromium/*/WebStorage \
-        --exclude=.android \
-        --exclude=.VirtualBox/*.iso \
-        .
+        --exclude=/*${file_add_name}*.tgz \
+        ${exclude_mozilla//'\n'/' '} \
+        ${exclude_home//'\n'/' '} \
+        /home
     echo "${file}"
 }
 mkalias_with_prefix 'backup_home'
 
 backup_etc()
 {
-    backup_dir=$1
-    [ "$backup_dir" = '' ] && printf "Укажите папку для бекапа\n" && return
+    eval $(mkvar 'backup_dir|$1||Укажите папку для бекапа')
     #ask_continue && return
-    cd /
-    file="${backup_dir}/$(hostname)_sys_etc_backup_$(backup_date).tgz"
+
+    file_add_name="sys_etc_backup"
+    file_pref="${backup_dir}/$(hostname)_${file_add_name}_"
+    [ -f "${file_pref}$(backup_date_day)*" ] && printf "Сегодня уже делался бэкап\n" && return
+
+    file="${file_pref}$(backup_date).tgz"
+
     sudo tar cvpzf "${file}" \
         /etc 
     echo "${file}"
@@ -144,13 +169,7 @@ mkalias_with_prefix 'backup_etc'
 
 backup_sys()
 {
-    backup_dir=$1
-    [ "$backup_dir" = '' ] && printf "Укажите папку для бекапа\n" && return
-    #ask_continue && return
-    cd /
-    file="${backup_dir}/$(hostname)_sysbackup_$(backup_date).tgz"
-    sudo tar cvpzf "${file}" \
-        --exclude=/*_sysbackup_*.tgz \
+    exclude_sys='
         --exclude=/proc \
         --exclude=/dev \
         --exclude=/lost+found \
@@ -166,6 +185,19 @@ backup_sys()
         --exclude=/usr/share \
         --exclude=/tmp \
         --exclude=/opt \
+    '
+    eval $(mkvar 'backup_dir|$1||Укажите папку для бекапа')
+    #ask_continue && return
+
+    file_add_name="sysbackup"
+    file_pref="${backup_dir}/$(hostname)_${file_add_name}_"
+    [ -f "${file_pref}$(backup_date_day)*" ] && printf "Сегодня уже делался бэкап\n" && return
+
+    file="${file_pref}$(backup_date).tgz"
+
+    sudo tar cvpzf "${file}" \
+        --exclude=/*${file_add_name}*.tgz \
+        ${exclude_sys//'\n'/' '} \
         /
     echo "${file}"
 }
@@ -174,12 +206,13 @@ mkalias_with_prefix 'backup_sys'
 backup_firefox_and_del_old_files()
 {
     backup_dir=$1
-    [ "$backup_dir" = '' ] && printf "Укажите папку для бекапа\n" && return
+    [ "$backup_dir" = '' ] && backup_dir=$(pwd) && printf "Папка для бекапа '${backup_dir}'\n"
+    eval $(mkvar 'user|$2|$(whoami)')
     #ask_continue && return
 
     backup_host_dir="${backup_dir}/$(hostname)"
     mkdir "${backup_host_dir}"
-    backup_ff_dir="${backup_host_dir}/firefox"
+    backup_ff_dir="${backup_host_dir}/firefox_${user}"
     mkdir "${backup_ff_dir}"
 
     backup_firefox "${backup_ff_dir}"
@@ -190,10 +223,10 @@ mkalias_with_prefix 'backup_firefox_and_del_old_files'
 backup_home_and_del_old_files()
 {
     backup_dir=$1
-    [ "$backup_dir" = '' ] && printf "Укажите папку для бекапа\n" && return
+    [ "$backup_dir" = '' ] && backup_dir=$(pwd) && printf "Папка для бекапа '${backup_dir}'\n"
     #ask_continue && return
 
-    backup_host_dir="$(pwd)/$(hostname)"
+    backup_host_dir="${backup_dir}/$(hostname)"
     mkdir "${backup_host_dir}"
     backup_home_dir="${backup_host_dir}/home"
     mkdir "${backup_home_dir}"
@@ -206,10 +239,10 @@ mkalias_with_prefix 'backup_home_and_del_old_files'
 backup_sys_and_del_old_files()
 {
     backup_dir=$1
-    [ "$backup_dir" = '' ] && printf "Укажите папку для бекапа\n" && return
+    [ "$backup_dir" = '' ] && backup_dir=$(pwd) && printf "Папка для бекапа '${backup_dir}'\n" 
     #ask_continue && return
 
-    backup_host_dir="$(pwd)/$(hostname)"
+    backup_host_dir="${backup_dir}/$(hostname)"
     mkdir "${backup_host_dir}"
     backup_sys_dir="${backup_host_dir}/sys"
     mkdir "${backup_sys_dir}"
diff --git a/Script/common b/Script/common
index 1faf9da..c5dc150 100644
--- a/Script/common
+++ b/Script/common
@@ -16,3 +16,22 @@ ask_continue()
     fi
     return 1
 }
+
+mkvar()
+{
+    # на входе 'var_name|val|def_val|string_to_print_before_return'
+    p="$1"
+    readarray -d "|" -t cur_params <<< "$p"
+    var_name="${cur_params[0]}"
+    val="${cur_params[1]}"
+    def_val="${cur_params[2]}"
+    string_to_print_before_return="${cur_params[3]}"
+
+    if [ "${string_to_print_before_return}" == "" ]; then
+        echo "$var_name=$val; [[ \"\${$var_name}\" == \"\" ]] && $var_name=$def_val;"
+    else
+        echo "$var_name=$val; [[ \"\${$var_name}\" == \"\" ]] && printf(\"${string_to_print_before_return}\\n\") && return;"
+    fi
+}
+
+
diff --git a/Script/crontab b/Script/crontab
new file mode 100644
index 0000000..87d4f76
--- /dev/null
+++ b/Script/crontab
@@ -0,0 +1,79 @@
+#!/bin/bash
+
+[ "${alias_dir}" = "" ] && alias_dir=$(pwd)
+source "${alias_dir}/common"
+
+crontab_edit()
+{
+    sudo_=$1
+    EDITOR=mcedit $sudo_ crontab -e
+}
+mkalias_with_prefix 'crontab_edit'
+
+crontab_edit_sudo()
+{
+    crontab_edit sudo
+}
+mkalias_with_prefix 'crontab_edit_sudo'
+
+crontab_print()
+{
+    sudo_=$1
+    $sudo_ crontab -l
+}
+mkalias_with_prefix 'crontab_print'
+
+crontab_add_silence()
+{
+    cmd=$1
+    sudo_=$2
+    $sudo_ crontab -l | { cat; echo "${cmd}"; } | $sudo_ crontab -
+}
+mkalias_with_prefix 'crontab_add_silence'
+
+crontab_add()
+{
+    cron_help='
+#minute (0-59),
+#|<---->hour (0-23),
+#|<---->|<----->day of the month (1-31),
+#|<---->|<----->|<----->mfreqonth of the year (1-12),
+#|<---->|<----->|<----->|<----->day of the week (0-6 with 0=Sunday).
+#|<---->|<----->|<----->|<----->|<----->commands
+
+Примеры Cron заданий
+
+Запускать команду в 15:00 каждый день с понедельника по пятницу:
+0 15 * * 1-5 command
+
+Запускать скрипт каждые 5 минут:
+
+MAILTO=email@example.com
+*/5 * * * * /path/to/script.sh > /dev/null
+
+Запускать сценарий в первый понедельник каждого месяца в 7 часов утра:
+
+0 7 1-7 * 1 /path/to/script.sh
+
+Запускать сценарий в 21:15, 1 и 15 числа каждого месяца:
+
+15 9 1,15 * * /path/to/script.sh
+
+Запускать при старте ситемы:
+
+@reboot /path/to/script.sh
+    '
+    cmd="$1"
+    sudo_=$2
+    [[ "$cmd" == "" ]] && printf "Укажите команду, например 'crontab_add \"00 09 * * 1-5 echo hello\"}' ${cron_help}\n" && return
+    printf "Добавляем команду '${cmd}'\n"
+    ask_continue && return
+
+    crontab_add_silence "$cmd" "$sudo_"
+
+    printf "Получившийся кронтаб:\n"
+    crontab_print "$sudo_"
+}
+mkalias_with_prefix 'crontab_add'
+
+
diff --git a/Script/install b/Script/install
index a352d9b..f0a283d 100644
--- a/Script/install
+++ b/Script/install
@@ -218,13 +218,10 @@ mkalias_with_prefix 'install_thinkfan'
 
 install_max_freq()
 {
-    printf "Установка максимальной частоты процессора\n"
-    ask_continue && return
-    # Set max freq
-    echo 'Выполнить
-    EDITOR=mcedit crontab -e
-    Записать туда
-    @reboot cpupower frequency-set --max 2.3G'
+    freq=$1
+    [[ "$freq" == "" ]] && freq="1.5G"
+    #ask_continue && return
+    crontab_add "@reboot cpupower frequency-set --max ${freq}" sudo
 }
 mkalias_with_prefix 'install_max_freq'
 
@@ -275,12 +272,14 @@ set_max_perf_and_charge()
     max_charge=$2
     [ "${max_perf}" = "" ]  && max_perf="80" 
     [ "${max_charge}" = "" ]  && max_charge="80" 
-    printf "Максимальная производительность в ${max_perf} и заряд в ${max_charge}\n"
+    printf "Установить максимальную производительность в ${max_perf} и заряд в ${max_charge}\n"
     ask_continue && return
     # Установить максимальный уровень заряда и поизводительности
     #sudo apt-get install tlp
     echo "${max_perf}" | sudo tee /sys/class/power_supply/BAT0/charge_control_end_threshold
     echo "${max_charge}" | sudo tee /sys/devices/system/cpu/intel_pstate/max_perf_pct
+    crontab_add "@reboot echo "${max_perf}" | tee /sys/class/power_supply/BAT0/charge_control_end_threshold" sudo
+    crontab_add "@reboot echo "${max_charge}" | tee /sys/devices/system/cpu/intel_pstate/max_perf_pct" sudo
 }
 mkalias_with_prefix 'set_max_perf_and_charge'
 
@@ -292,7 +291,6 @@ get_max_perf_and_charge()
 }
 mkalias_with_prefix 'get_max_perf_and_charge'
 
-
 install_headers()
 {
     printf "Установка заголовков для исходного кода ядра linux-headers\n"