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средства_программирования_shell [2018/11/07 15:42] val [Использование диалоговых окон] |
средства_программирования_shell [2022/09/22 21:26] val [Web сервер на shell] |
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| * [[http://mywiki.wooledge.org/BashFAQ|Часто задаваемые вопросы про bash (eng)]] | * [[http://mywiki.wooledge.org/BashFAQ|Часто задаваемые вопросы про bash (eng)]] | ||
| * [[https://habrahabr.ru/post/335960/|Играючи BASH'им]] | * [[https://habrahabr.ru/post/335960/|Играючи BASH'им]] | ||
| + | |||
| * [[https://youtu.be/GxVmukxVUo0|Видео урок]] | * [[https://youtu.be/GxVmukxVUo0|Видео урок]] | ||
| + | |||
| * [[https://www.tutorialspoint.com/execute_bash_online.php|Execute Bash Shell Online]] | * [[https://www.tutorialspoint.com/execute_bash_online.php|Execute Bash Shell Online]] | ||
| + | * [[https://www.shellcheck.net/|ShellCheck finds bugs in your shell scripts.]] | ||
| + | |||
| + | ===== Проверка синтаксиса ===== | ||
| + | <code> | ||
| + | # apt install shellcheck | ||
| + | |||
| + | $ shellcheck webd/webd | ||
| + | </code> | ||
| ===== Переменные окружения ===== | ===== Переменные окружения ===== | ||
| Line 62: | Line 72: | ||
| ===== Примеры простых алгоритмов и вариантов использования ===== | ===== Примеры простых алгоритмов и вариантов использования ===== | ||
| + | |||
| + | * [[Коды завершения#Проверка наличия аргументов в скриптах]] | ||
| ==== Целочисленный цикл (поиск хостов в подсети) ==== | ==== Целочисленный цикл (поиск хостов в подсети) ==== | ||
| Line 79: | Line 91: | ||
| done | done | ||
| </code><code> | </code><code> | ||
| - | $ cat test_arp_ping.sh | + | $ cat arp_ping.sh |
| </code><code> | </code><code> | ||
| #!/bin/sh | #!/bin/sh | ||
| Line 88: | Line 100: | ||
| while : | while : | ||
| do | do | ||
| - | ping -c 1 -W 1 $1.$i > /dev/null 2>&1 | + | ip=$1.$i |
| - | arp -an | grep "($1.$i)" | grep -q ':..:..:' && echo + $1.$i || echo - $1.$i | + | |
| + | ping -c 1 -W 1 $ip >/dev/null | ||
| + | ip n | grep "$ip " | grep -q ':..:..:' && echo $ip | ||
| i=$(($i + 1)) | i=$(($i + 1)) | ||
| test $i -eq 254 && break | test $i -eq 254 && break | ||
| Line 348: | Line 363: | ||
| ===== Дополнительные материалы ===== | ===== Дополнительные материалы ===== | ||
| + | ==== Расширения BASH ==== | ||
| + | <code> | ||
| + | $ echo a{1..5}b | ||
| + | |||
| + | $ echo a{1,3,5}b | ||
| + | </code> | ||
| ==== CGI на shell ==== | ==== CGI на shell ==== | ||
| - | * [[http://www.team2053.org/docs/bashcgi/gettingstarted.html|Creating CGI Programs with Bash: Getting Started]] | + | * [[http://underpop.online.fr/c/cgi/docs/creating-cgi-programs-with-bash/|Creating CGI Programs with Bash: Introduction]] |
| + | * [[https://debian-administration.org/article/371/A_web_server_in_a_shell_script|A web server in a shell script]] | ||
| + | * [[https://stackoverflow.com/questions/16640054/minimal-web-server-using-netcat|Minimal web server using netcat]] | ||
| + | * [[https://funprojects.blog/2021/04/11/a-web-server-in-1-line-of-bash/|A Web Server in 1 Line of Bash Code]] | ||
| ==== Web сервер на shell ==== | ==== Web сервер на shell ==== | ||
| - | * [[https://debian-administration.org/article/371/A_web_server_in_a_shell_script|A web server in a shell script]] | + | * [[Сервис HTTP]] |
| - | === Debian/Ubuntu === | ||
| <code> | <code> | ||
| # cat /usr/local/sbin/webd | # cat /usr/local/sbin/webd | ||
| Line 362: | Line 385: | ||
| #!/bin/bash | #!/bin/bash | ||
| base=/var/www | base=/var/www | ||
| + | log=/var/log/webd.log | ||
| read request | read request | ||
| + | #echo $request >> $log | ||
| while : | while : | ||
| do | do | ||
| - | read header | + | read -r header |
| + | # echo $header >> $log | ||
| [ "$header" == $'\r' ] && break; | [ "$header" == $'\r' ] && break; | ||
| done | done | ||
| Line 373: | Line 399: | ||
| url="${request#GET }" | url="${request#GET }" | ||
| url="${url% HTTP/*}" | url="${url% HTTP/*}" | ||
| - | filename="$base$url" | ||
| - | echo -e "HTTP/1.1 200 OK\r" | + | test $url = "/" && url="/index.html" |
| - | echo -e "Content-Type: `/usr/bin/file -bi \"$filename\"`\r" | + | |
| - | echo -e "\r" | + | |
| - | /bin/cat "$filename" | ||
| - | </code> | ||
| - | |||
| - | === FreeBSD === | ||
| - | <code> | ||
| - | # cat /usr/local/sbin/webd | ||
| - | </code><code> | ||
| - | #!/bin/sh | ||
| - | base=/var/www | ||
| - | |||
| - | read request | ||
| - | |||
| - | url="${request#GET }" | ||
| - | url="${url% HTTP/*}" | ||
| filename="$base$url" | filename="$base$url" | ||
| - | echo "HTTP/1.1 200 OK" | + | if [ -e "$filename" ] |
| - | echo "Content-Type: `/usr/bin/file -bi \"$filename\"`" | + | then |
| - | echo "" | + | echo `date` OK $url >> $log |
| - | + | echo -e "HTTP/1.1 200 OK\r" | |
| - | /bin/cat "$filename" | + | echo -e "Content-Type: $(/usr/bin/file -bi \"$filename\")\r" |
| + | echo -e "\r" | ||
| + | /bin/cat "$filename" | ||
| + | else | ||
| + | echo "$(date)" ERR $url >> $log | ||
| + | echo -e "HTTP/1.1 404 Not Found\r" | ||
| + | echo -e "Content-Type: text/html;\r" | ||
| + | echo -e "\r" | ||
| + | ip=$(cat /proc/net/fib_trie | awk '/32 host/ { print f } {f=$2}' | sort -u | grep -v 127.0.0.1) | ||
| + | echo -e "<h1>$url Not Found in container $(hostname) with ip $ip</h1>" | ||
| + | echo "ver 1.1" | ||
| + | fi | ||
| </code> | </code> | ||
| - | === Debian/Ubuntu/FreeBSD === | ||
| <code> | <code> | ||
| # chmod +x /usr/local/sbin/webd | # chmod +x /usr/local/sbin/webd | ||
| + | </code> | ||
| + | ==== Ресурсы Web сервера на shell ==== | ||
| + | <code> | ||
| # mkdir /var/www | # mkdir /var/www | ||
| Line 418: | Line 440: | ||
| </code> | </code> | ||
| - | === Debian/Ubuntu === | ||
| <code> | <code> | ||
| # wget -O /var/www/img/logo.gif http://val.bmstu.ru/unix/Media/logo.gif | # wget -O /var/www/img/logo.gif http://val.bmstu.ru/unix/Media/logo.gif | ||
| </code> | </code> | ||
| - | === FreeBSD === | + | * [[Сервис INETD]] |
| + | ==== Проверка ==== | ||
| <code> | <code> | ||
| - | # fetch -o /var/www/img/logo.gif http://val.bmstu.ru/unix/Media/logo.gif | + | http://server.corpX.un/ |
| </code> | </code> | ||
| - | |||
| ==== Asterisk AGI ==== | ==== Asterisk AGI ==== | ||
| - | * [[Сервис Asterisk#Тарификация звонков]] | + | * [[Сервис Asterisk#Asterisk AGI]] |
| Line 498: | Line 520: | ||
| mysql mybd -B --skip-column-names -e "$sql" | mysql mybd -B --skip-column-names -e "$sql" | ||
| + | </code> | ||
| + | |||
| + | ===== Отладка ===== | ||
| + | |||
| + | <code> | ||
| + | set +x | ||
| + | set -n | ||
| </code> | </code> | ||
средства_программирования_shell.txt · Last modified: 2024/06/19 13:44 by val
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