正名正實: 8月 2022

2022年8月13日星期六

人民要的是，知錯能改，換鄭運鵬，這個之前瞎挺的傢伙是要幹嘛？他給我的好感比林智堅更差，林智堅除了抄襲不能錯硬凹讓我反感外，對他也沒什麼特別的討厭，但鄭運鵬這傢伙之前講過的搞笑話實在很多，對他印象實在爛到極點，這民進黨真的跟人民越離越遠

2022年8月11日星期四

How to install Windows 11 in Paralles on MAC

Windows 11 需要TPM modules 才能正常安裝使用，
在沒有支援TPM的mac 上要使用windows 11 現在可以透過Parallels 上的virtual Trusted Platform Module(TPM)
只要在config->Hardward 新增TPM chip 即可，
要是沒有看到，就要先檢查你原本的windows vm 是不是使用Legacy Bios ，因為
TPM只能做用在 UEFI/EFI BIOS, 所以如果是使用 legacy的BIOS目前是會看不到
TPM Chip

但支援新的bios 只有新的VM 才有支援。如果是原本舊的VM的話，就可以參考下列我從網路上查到的轉換步驟去自己作轉換 1. 開啟windows vm 2. 輸入 mbr2gpt /validate /allowFullOS 3. mbr2gpt /convert 4. 關閉windows vm 5. 從Mac 開啟VM file , 通常需要點選 "show Package Contents", 找到裡面的config.pvs 6. 使用任何的文字編輯器去編輯檔案 7. 把下列兩行裡面的 0 改成 1 <EfiEnabled> from 0 to 1 <EfiSecureBoot> from 0 to 1 1. 存擋 2. 現在可以從Parallels 開始加入TPM module 細節可以參考這篇wiki Migrating a Windows 10 VM to Windows 11 in Parallels Desktop

原文連結：https://kb.parallels.com/122702

如果還是沒看到TPM選項，就檢查下面開機選項是否有設定vm.efi

Open Parallels
If you have a VM already, shut it down
Open the Virtual Machine’s configuration
Go to Hardware
Go to Boot Order
Go to Advanced Settings
In Boot Flags, type this command:
vm.efi.secureboot=1

蔡英文下令全黨「挺堅」

民進黨這樣跟台大對幹，實在讓我感到很無言，對於之前蔡英文總統的博士學位，我本來還是相信的，現在這樣一搞，我不只對民進黨失望，連帶也會懷疑之前的博士學位事件，難不成真的是有問題，就像高端。講了這麼久。到現在連個認證都沒有。真的是把民眾黨傻子嗎？

2022年8月10日星期三

最近林智堅論文抄襲案，被台大判定抄襲，撤銷碩士學位，但卻看到民進黨全黨相挺，還有幾個以前覺得形象很好很正直的政治人物，例如陳建仁，鄭文燦也是挺到底，就讓我覺得是我的理解真的有問題，還是我真的搞錯這些政治人物，其實他們的形象也是演出來的，其實他們根本就不是那麼正派的政治人物，我真的覺得不要再挑戰普羅大眾的智慧了，學術抄襲這種一翻兩瞪眼的爭議，何必要硬幹到底，不懂這樣做的好處是什麼，測試民進黨的死忠派？過去我追隨的民進黨是有理想的政黨，現在我實在是提到民進黨三個字，就實在支持不下去，搞不懂為什麼民進黨的支持度真的還可以這麼高，真是顛覆我的想像

Netgear RBK 850 wifi connection dropped frequently

My home network encounter the wifi connection dropped issue recently.
I have tried to use Wifi signal analyzer to use specific channel id to avoid conflict with neighbor's wifi AP, but it doesn't work.
Today I found there is a new firmware released, just take a note to record it.

Firmware-Version-4-6-8-5

2022年8月8日星期一

Synology DSM 升級問題

pgsql_analyzer.sh

#!/bin/bash

##################
# Utility functions
##################

syno_getopt()
{
    local opt_cmd="$1"
    shift 1

    while getopts "$opt_cmd" opt; do
        if [[ -z "$OPTARG" ]]; then
            eval "opt_${opt}"="-"
        else
            eval "opt_${opt}"="$OPTARG"
        fi
    done
}

cecho()
{
    local color="$1"
    local message="$2"

    local NC='\033[0m'
    local code

    case "$color" in
        red)    code="1;31" ;;
        green)  code="1;32" ;;
        blue)   code="1;34" ;;
        gray)   code="0;37" ;;
        yellow) code="1;33" ;;
        *)      code="1;37" ;;
    esac

    code='\033['$code'm'
    echo "${code}${message}${NC}"
}

errecho()
{
    echo -e "$@" >&2
}

LOG()
{
    local level="$1"
    local message="$2"
    local timestamp="$(date +'%Y-%m-%d %H:%M:%S')"

    # Echo to screen
    local color
    case "$level" in
        "ERROR"|"WARNING") color="red" ;;
        "NOTICE")          color="blue" ;;
        "INFO")          color="green" ;;
        *)                 color="gray" ;;
    esac

    formatted=$(cecho yellow "$timestamp ")$(cecho $color "[$level] $message")
    errecho $formatted

}

log_check_result()
{
    local name="$1"
    local result="$2"

    if [[ "$result" = "true" || "$result" = "0" ]]; then
        LOG INFO "Running $name ... Pass"
        return 0
    else
        LOG WARNING "Running $name ... Error found, please check messages above."
        return 1
    fi
}

db_query()
{
    local db="$1"
    local sql="$2"

    psql -At -F $'\t' -U postgres $db -c "$sql"
}

##################
# Test functions
##################

findfile()
{
    local pattern="$1"
    local path="$2"
    local files="${path} ${path}.1 ${path}.1.xz ${path}.2.xz"
    local limit=20
    local result=false
    local extentsion file msg

    for file in $files; do
        if [[ ! -f "$file" ]]; then
            continue
        fi

        LOG DEBUG "Searching error message from file: $file ..."
        extension="${file##*.}"

        case "$extension" in
            gz)
                msg="$(zcat "$file" | grep "$pattern" | tail -n $limit)"
                ;;
            xz)
                msg="$(xzcat "$file" | grep "$pattern" | tail -n $limit)"
                ;;
            *)
                msg="$(cat "$file" | grep "$pattern" | tail -n $limit)"
                ;;
        esac

        if [[ -n "$msg" ]]; then
            result=true
            echo "$msg"
            break
        fi
    done

    $result && return 0 || return 1
}

has_permission()
{
    local path="$1"
    local permission="$2"
    local user="$3"
    local group="$4"
    local result=true
    local re f_permission f_user f_group

    # Check path exists
    if [[ ! -e "$path" ]]; then
        LOG ERROR "File or directory does not exists: $path"
        return 1
    fi

    # Check path permission
    if [[ -n "$permission" ]]; then
        re="${permission//-/.}"
        f_permission="$(stat -c "%A" "$path")"

        if [[ ! "$f_permission" =~ $re ]]; then
            LOG ERROR "Permission $permission is not match, path: $path, permission: $f_permission"
            result=false
        fi
    fi

    # Check path user
    if [[ -n "$user" ]]; then
        f_user="$(stat -c "%U" "$path")"

        if [[ "$f_user" != "$user" ]]; then
            LOG ERROR "User $user is not match, path: $path, user: $f_user"
            result=false
        fi
    fi

    # Check path group
    if [[ -n "$group" ]]; then
        f_group="$(stat -c "%G" "$path")"

        if [[ "$f_group" != "$group" ]]; then
            LOG ERROR "Group $group is not match, path: $path, user: $f_group"
            result=false
        fi
    fi

    $result && return 0 || return 1
}

##################
# Test cases
##################


disklog_check()
{
    local files="/var/log/dmesg /var/log/messages"
    local result=true
    local file

    for file in $files; do
        if findfile "exception Emask\|status: {\|error: {\|SError: {" "$file"; then
            LOG ERROR "Disk error(s) are found in $file"
            result=false
        fi
    done

    for file in $files; do
        if findfile "EXT4-fs .*: error\|EXT4-fs error\|EXT4-fs warning\|read error corrected" "$file"; then
            LOG ERROR "Disk ext-4 error(s) are found in $file"
            result=false
        fi
    done

    log_check_result disklog_check $result
}

tune2fs_check()
{
    local devs="/dev/md0 /dev/sda1 $(cut -d ' ' -f 1 /run/synostorage/volumetab)"
    local result=true
    local dev

    for dev in $devs; do
        if tune2fs -l "$dev" 2> /dev/null | grep "FS Error"; then
            LOG ERROR "Filesystem error(s) are found in tune2fs -l $dev"
            result=false
        fi
    done

    log_check_result tune2fs_check $result
}

permission_check()
{
    # Check directory permission
    local volume="$(servicetool --get-service-volume pgsql)"
    local result=true

    has_permission "$volume"                          drwxr-xr-x                   || result=false
    has_permission "${volume}/@database"              drwxr-xr-x admin    users    || result=false
    has_permission "${volume}/@database/pgsql"        drwx------ postgres postgres || result=false

    log_check_result permission_check $result
}

user_check()
{
    # Check root user name and postgres entry point
    local count
    local result=true

    # Check root name
    count=$(cat /etc/passwd | grep -c ':x:0:0:')

    if [[ "$count" -ne 1 ]]; then
        LOG ERROR "User: root has $count rows in /etc/passwd"
        result=false
    fi

    if ! cat /etc/passwd | grep 'root:x:0:0:' > /dev/null 2>&1; then
        LOG ERROR "User: root is not found in /etc/passwd"
        result=false
    fi

    # Check postgres entry point
    count=$(cat /etc/passwd | grep -c 'postgres')
    if [[ "$count" -ne 1 ]]; then
        LOG ERROR "User: postgres has $count rows in /etc/passwd"
        result=false
    fi

    if ! cat /etc/passwd | grep postgres | grep '/var/services/pgsql:/bin/sh' > /dev/nuill 2>&1; then
        LOG ERROR "User: postgres entry point(/var/services/pgsql:/bin/sh) has been modified"
        result=false
    fi

    log_check_result user_check $result
}

pglog_check()
{
    local result=true
    if findfile "FATAL" "/var/log/postgresql.log"; then
        LOG ERROR "Fatal error(s) are found in postgresql log"
        result=false
    fi

    log_check_result pglog_check $result
}

volume_check()
{
    local volume="$(servicetool --get-service-volume pgsql)"
    local result=true
    local avail

    if ! df -BG | grep -q "$volume"; then
        LOG WARNING "Failed to parse volume size, Please check available space of volume manually"
        log_check_result volume_check false
        return
    fi

    # Get available volume space in Gigabytes
    avail=$(df -BG | grep "$volume" | awk '{print $4}' | sed 's/G//g')

    if ((avail <= 1)); then
        LOG ERROR "Available volume space is smaller than 1GB"
        result=false
    fi

    log_check_result volume_check $result
}

calendar_check()
{
    local result=true
    local answer=n

    if tail -n 20 /var/log/postgresql.log | grep '/tmp/synocalendar'; then
        result=false
        read -p "Hit Calendar bug, missing directory: /tmp/synocalendar. Do you want to fix it? (Y/n):" answer
        echo ""

        if [[ -z "$answer" || "$answer" = "Y" || "$answer" = "y" ]]; then
            LOG INFO "Directory created: /tmp/synocalendar. Restart pgsql manullay later ('synoservice --restart pgsql' on DSM6, '/usr/syno/bin/synosystemctl restart pgsql-adapter' on DSM7)."
            mkdir /tmp/synocalendar
            chown postgres:postgres /tmp/synocalendar
        fi
    fi

    log_check_result calendar_check $result
}

##### Main and help function

rebuild_database()
{
    local volume="$(servicetool --get-service-volume pgsql)"
    local path="${volume}/@database/pgsql"
    local dsm_version=`synogetkeyvalue /etc.defaults/VERSION major`

    LOG INFO "Rebuilding database ..."
    
    if [[ "$dsm_version" = "7" ]]; then
        if ! /usr/syno/bin/synosystemctl stop-service-by-reason rebuild pgsql-adapter; then
            LOG ERROR "Failed to stop pgsql"
            return 1
        fi
    else
        if ! synoservice --pause-by-reason pgsql rebuild; then
            LOG ERROR "Failed to stop pgsql"
            return 1
        fi
    fi

    BACKUP_PATH=${path}-$(date -u +"%Y%m%dT%H%M%SZ")
    mv "$path" "$BACKUP_PATH"
    LOG INFO "Backup Success: $BACKUP_PATH"
    rm /var/services/pgsql

    if ! servicetool --set-pgsql; then
        LOG ERROR "Failed to create psgql directory"
        return 1
    fi

    if [[ "$dsm_version" = "7" ]]; then
        if ! /usr/syno/bin/synosystemctl start-service-by-reason rebuild pgsql-adapter; then
            LOG ERROR "Failed to start pgsql"
            return 1
        fi
    else
        if ! synoservice --resume-by-reason pgsql rebuild; then
            LOG ERROR "Failed to start pgsql"
            return 1
        fi
    fi
    LOG INFO "Rebuild done."
}

vacuum_all()
{
    local result=true

    ##### List all databases
    dbs="$(db_query postgres 'SELECT datname FROM pg_database WHERE datistemplate = false')"
    echo "Database list: $dbs"


    ##### Vaccum
    for db in $dbs; do
        # Skip large size database
        if [[ "$db" = "synoips" ]]; then
            LOG DEBUG "Skip to vacuum $db"
            continue
        fi

        LOG DEBUG "Vacuuming $db"
        if ! db_query $db "VACUUM FULL"; then
            LOG WARNING "Failed to vacuum $db"
            result=false
        fi
    done

    log_check_result vacuum_all $result
}

recreate_database()
{
    local package="$1"
    local db=$(cat /var/packages/${package}/conf/resource | jq -r '.["pgsql-db"]["create-database"][0]["db-name"]')
    local db_tmp="${db}_$(date +'%Y%m%d%H%M%S')"

    if ! db_query postgres "ALTER DATABASE $db RENAME TO $db_tmp"; then
        LOG ERROR "Failed to rename database from $db to $db_tmp"
        return 1
    fi

    if ! synopkghelper update $package pgsql-db; then
        LOG ERROR "Failed to create database for package: $package"
        return 1
    fi
}


show_usage()
{
    cat << EOF
Description:
    Analysis pgsql issues
Usage:
    $0 [options]

Options:
    -h            Show this help
    -r            Rebuild pgsql database
    -d <package>  Recreate database
    -v            Vacuum all databases (exluding synoips)

EOF
}

main()
{
    syno_getopt "hvrd:" "$@"
    shift $((OPTIND-1))

    if [[ -n "$opt_h" ]]; then
        show_usage
        return
    fi

    ##### Rebuild database
    if [[ -n "$opt_r" ]]; then
        rebuild_database
        return $?
    fi

    ##### Vacuum every databases
    if [[ -n "$opt_v" ]]; then
        vacuum_all
        return $?
    fi


    ##### Recreate database for package
    if [[ -n "$opt_d" ]]; then
        recreate_database "$opt_d"
        return $?
    fi

    ##### Check
    pglog_check
    disklog_check
    tune2fs_check
    permission_check
    user_check
    volume_check
    calendar_check
}

main "$@"

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正名正實

2022年8月13日星期六

Netgear A6210 wifi usb adaptor doesn't work on Mac

用鄭運鵬換林智堅，真的完全不懂人民在想什麼

2022年8月11日星期四

How to install Windows 11 in Paralles on MAC

蔡英文下令全黨「挺堅」

2022年8月10日星期三

林智堅論文門事件

Netgear RBK 850 wifi connection dropped frequently

2022年8月8日星期一

Synology DSM 升級問題

pgsql_analyzer.sh

Obsidian 插件介紹：Text Generator

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2022年8月13日 星期六

2022年8月11日 星期四

2022年8月10日 星期三

2022年8月8日 星期一

pgsql_analyzer.sh

2022年8月13日星期六

2022年8月11日星期四

2022年8月10日星期三

2022年8月8日星期一