为了清理我的自定义hosts
文件并删除 Windows 上的死域,我从 ping 主机domains.txt
,如果收到回复,我将该主机添加到result.txt
:
@echo off
>result.txt (
for /f %%i in (domain.txt) do ping -n 1 %%i >nul && echo 127.0.0.1 %%i
)
谁能帮我通过 Linux shell 脚本实现相同的功能?
答案1
如果您正在使用bash
,您可以尝试这个简短的脚本:
#!/bin/bash
while IFS= read -r host; do
[[ $(ping -c4 "$host") ]] 2>/dev/null && echo "$host" >> /path/to/result.txt
done < /path/to/domains.txt
这里我假设主机domains.txt
是换行符分隔的。
编辑:
这是修改后的脚本,ping
详细(摘要)并假设该目录/path/to/directory/
包含文件domains-01.txt
等domains-02.txt
。
#!/bin/bash
for file in /path/to/directory/domains-*.txt; do
while IFS= read -r host; do
ping -qc4 "$host" && echo "$host" >> /where/to/save/result.txt
done < "$file"
done
如果您想要暂停-恢复行为,请查看SIGTSTP
/SIGSTOP
和SIGCONT
信号可以使用kill
类似的命令发出,例如,如果进程的 PID 是 2773,则:
暂停:kill -TSTP 2773
,恢复:kill -CONT 2773
。
答案2
冯塞布尔 https://github.com/funilrys/funceble是个最好的工具我今天推荐使用它。
$ ./funceble -f domain.txt
Domain Status Expiration Date Source Analyse Date
------------------------------------------- ----------- ----------------- ---------- --------------------
google.com ACTIVE 14-sep-2020 WHOIS Tue Sep 25, 06:30:43
stackexchange.com ACTIVE 12-jun-2018 WHOIS Tue Sep 25, 06:30:44
zhnixomknxkm.com INACTIVE Unknown NSLOOKUP Tue Sep 25, 06:30:45
kvfjjyrlsphr.info INACTIVE Unknown NSLOOKUP Tue Sep 25, 06:30:46
adblockplus.org ACTIVE 09-jun-2018 WHOIS Tue Sep 25, 06:30:47
Status Percentage Numbers
----------- ------------ -------------
ACTIVE 60% 3
INACTIVE 40% 2
INVALID 0% 0
答案3
我尽量避免 ping,因为任何东西都可以拦截并响应回声——即使它不是预定目标。这是我使用的:
#===== FUNCTION =============================================================
# NAME: validateServerAvailability
# DESCRIPTION: Validates that a given host exists in DNS and is alive
# PARAMETERS: Target host, port number (optional)
# RETURNS: 0 if success, 1 otherwise
#==============================================================================
function validateServerAvailability
{
trap '[ ! -z "${ENABLE_VERBOSE}" ] && [ "${ENABLE_VERBOSE}" = "${_TRUE}" ] || set +x; [ ! -z "${ENABLE_TRACE}" ] && [ "${ENABLE_TRACE}" = "${_TRUE}" ] && set +v; set -o noclobber' INT TERM EXIT;
[ ! -z "${ENABLE_VERBOSE}" ] && [ "${ENABLE_VERBOSE}" = "${_TRUE}" ] && set -x || set +x;
[ ! -z "${ENABLE_TRACE}" ] && [ "${ENABLE_TRACE}" = "${_TRUE}" ] && set -v || set +v;
set +o noclobber;
typeset METHOD_NAME="${0}#${FUNCNAME[0]}";
typeset -i RETURN_CODE=0;
[ ! -z "${ENABLE_PERFORMANCE}" ] && [ "${ENABLE_PERFORMANCE}" = "${_TRUE}" ] && writeLogEntry "PERFORMANCE" "${METHOD_NAME}" "${0}" "${LINENO}" "${METHOD_NAME} START: $(date +"${TIMESTAMP_OPTS}")";
[ ! -z "${ENABLE_PERFORMANCE}" ] && [ "${ENABLE_PERFORMANCE}" = "${_TRUE}" ] && typeset -i START_EPOCH=$(date +"%s");
[ ! -z "${ENABLE_DEBUG}" ] && [ "${ENABLE_DEBUG}" = "${_TRUE}" ] && writeLogEntry "DEBUG" "${METHOD_NAME}" "${0}" "${LINENO}" "${METHOD_NAME} -> enter";
[ ! -z "${ENABLE_DEBUG}" ] && [ "${ENABLE_DEBUG}" = "${_TRUE}" ] && writeLogEntry "DEBUG" "${METHOD_NAME}" "${0}" "${LINENO}" "Provided arguments: ${*}";
if [ ${#} -eq 0 ]
then
typeset RETURN_CODE=3;
writeLogEntry "STDERR" "${METHOD_NAME}" "${0}" "${LINENO}" "${METHOD_NAME} - Validate a provided server's availability";
writeLogEntry "STDERR" "${METHOD_NAME}" "${0}" "${LINENO}" "Usage: ${METHOD_NAME} [ hostname ] [ port ]
-> The target host to validate
-> The port number to attempt connection on";
[ ! -z "${ENABLE_DEBUG}" ] && [ "${ENABLE_DEBUG}" = "${_TRUE}" ] && writeLogEntry "DEBUG" "${METHOD_NAME}" "${0}" "${LINENO}" "RETURN_CODE -> ${RETURN_CODE}";
[ ! -z "${ENABLE_DEBUG}" ] && [ "${ENABLE_DEBUG}" = "${_TRUE}" ] && writeLogEntry "DEBUG" "${METHOD_NAME}" "${0}" "${LINENO}" "${METHOD_NAME} -> exit";
[ ! -z "${ENABLE_VERBOSE}" ] && [ "${ENABLE_VERBOSE}" = "${_TRUE}" ] && set +x;
[ ! -z "${ENABLE_TRACE}" ] && [ "${ENABLE_TRACE}" = "${_TRUE}" ] && set +v;
[ ! -z "${ENABLE_PERFORMANCE}" ] && [ "${ENABLE_PERFORMANCE}" = "${_TRUE}" ] && typeset -i END_EPOCH=$(date +"%s");
[ ! -z "${ENABLE_PERFORMANCE}" ] && [ "${ENABLE_PERFORMANCE}" = "${_TRUE}" ] && typeset -i RUNTIME=$(( START_EPOCH - END_EPOCH ));
[ ! -z "${ENABLE_PERFORMANCE}" ] && [ "${ENABLE_PERFORMANCE}" = "${_TRUE}" ] && writeLogEntry "PERFORMANCE" "${METHOD_NAME}" "${0}" "${LINENO}" "${METHOD_NAME} TOTAL RUNTIME: $(( RUNTIME / 60 )) MINUTES, TOTAL ELAPSED: $(( RUNTIME % 60 )) SECONDS";
[ ! -z "${ENABLE_PERFORMANCE}" ] && [ "${ENABLE_PERFORMANCE}" = "${_TRUE}" ] && writeLogEntry "PERFORMANCE" "${METHOD_NAME}" "${0}" "${LINENO}" "${METHOD_NAME} END: $(date +"${TIMESTAMP_OPTS}")";
[ ! -z "${ERROR_COUNT}" ] && typeset -i ERROR_COUNT=0;
[ ! -z "${SEARCH_ENTRY}" ] && unset -v SEARCH_ENTRY;
[ ! -z "${VALIDATE_HOSTNAME}" ] && unset -v VALIDATE_HOSTNAME;
[ ! -z "${VALIDATE_PORT}" ] && unset -v VALIDATE_PORT;
[ ! -z "${METHOD_NAME}" ] && unset -v METHOD_NAME;
return ${RETURN_CODE};
fi
typeset VALIDATE_HOSTNAME="${1}";
[ ${#} -eq 2 ] && typeset -i VALIDATE_PORT=${2};
[ ! -z "${ENABLE_DEBUG}" ] && [ "${ENABLE_DEBUG}" = "${_TRUE}" ] && writeLogEntry "DEBUG" "${METHOD_NAME}" "${0}" "${LINENO}" "VALIDATE_HOSTNAME -> ${VALIDATE_HOSTNAME}";
[ ! -z "${ENABLE_DEBUG}" ] && [ "${ENABLE_DEBUG}" = "${_TRUE}" ] && writeLogEntry "DEBUG" "${METHOD_NAME}" "${0}" "${LINENO}" "VALIDATE_PORT -> ${VALIDATE_PORT}";
[ ! -z "${ENABLE_DEBUG}" ] && [ "${ENABLE_DEBUG}" = "${_TRUE}" ] && writeLogEntry "DEBUG" "${METHOD_NAME}" "${0}" "${LINENO}" "RUN COMMAND -> /usr/bin/env host \"${VALIDATE_HOSTNAME}\" > /dev/null 2>&1;";
case $(/usr/bin/env host "${VALIDATE_HOSTNAME}" > /dev/null 2>&1; echo ${?};) in
0)
case ${#} in
1)
case "$(uname)" in
[Ss][Oo][Ll][Aa][Rr][Ii][Ss])
[ ! -z "${ENABLE_DEBUG}" ] && [ "${ENABLE_DEBUG}" = "${_TRUE}" ] && writeLogEntry "DEBUG" "${METHOD_NAME}" "${0}" "${LINENO}" "RUN COMMAND -> /usr/bin/env ping \"${VALIDATE_HOSTNAME}\" 1 > /dev/null 2>&1";
/usr/bin/env ping "${VALIDATE_HOSTNAME}" 1 > /dev/null 2>&1;
;;
*)
[ ! -z "${ENABLE_DEBUG}" ] && [ "${ENABLE_DEBUG}" = "${_TRUE}" ] && writeLogEntry "DEBUG" "${METHOD_NAME}" "${0}" "${LINENO}" "RUN COMMAND -> /usr/bin/env ping -c 1 -q -W ${THREAD_TIMEOUT} \"${VALIDATE_HOSTNAME}\" > /dev/null 2>&1";
/usr/bin/env ping -c 1 -q -W ${THREAD_TIMEOUT} "${VALIDATE_HOSTNAME}" > /dev/null 2>&1;
;;
esac
;;
2)
if [ ! -z "$(type nc 2>/dev/null)" ]
then
[ ! -z "${ENABLE_DEBUG}" ] && [ "${ENABLE_DEBUG}" = "${_TRUE}" ] && writeLogEntry "DEBUG" "${METHOD_NAME}" "${0}" "${LINENO}" "RUN COMMAND -> /usr/bin/env nc -w 10 ${VALIDATE_HOSTNAME} ${VALIDATE_PORT} < /dev/null";
/usr/bin/env nc -w 10 ${VALIDATE_HOSTNAME} ${VALIDATE_PORT} < /dev/null > /dev/null 2>&1;
else
[ ! -z "${ENABLE_DEBUG}" ] && [ "${ENABLE_DEBUG}" = "${_TRUE}" ] && writeLogEntry "DEBUG" "${METHOD_NAME}" "${0}" "${LINENO}" "RUN COMMAND -> printf \"quit\n\" | /usr/bin/env telnet \"${VALIDATE_HOSTNAME}\" ${VALIDATE_PORT} >/dev/null 2>&1";
printf "quit\n" | /usr/bin/env telnet "${VALIDATE_HOSTNAME}" ${VALIDATE_PORT} >/dev/null 2>&1;
fi
;;
esac
;;
*)
## lets do a few things here. dig/host don't use /etc/resolv.conf
## so we have to kind of drag it in here.
for SEARCH_ENTRY in $(/usr/bin/env grep search /etc/resolv.conf)
do
[ ! -z "${ENABLE_DEBUG}" ] && [ "${ENABLE_DEBUG}" = "${_TRUE}" ] && writeLogEntry "DEBUG" "${METHOD_NAME}" "${0}" "${LINENO}" "SEARCH_ENTRY -> ${SEARCH_ENTRY}";
[ "${SEARCH_ENTRY}" == "search" ] && continue;
case $(/usr/bin/env host "${VALIDATE_HOSTNAME}.${SEARCH_ENTRY}" > /dev/null 2>&1; echo ${?};) in
0)
## make sure to fix the error counter
[ ${ERROR_COUNT} -ne 0 ] && unset -v ERROR_COUNT;
typeset -i ERROR_COUNT=0;
case ${#} in
1)
case "$(uname)" in
[Ss][Oo][Ll][Aa][Rr][Ii][Ss])
[ ! -z "${ENABLE_DEBUG}" ] && [ "${ENABLE_DEBUG}" = "${_TRUE}" ] && writeLogEntry "DEBUG" "${METHOD_NAME}" "${0}" "${LINENO}" "RUN COMMAND -> /usr/bin/env ping \"${VALIDATE_HOSTNAME}\" 1 > /dev/null 2>&1";
/usr/bin/env ping "${VALIDATE_HOSTNAME}" 1 > /dev/null 2>&1;
break;
;;
*)
[ ! -z "${ENABLE_DEBUG}" ] && [ "${ENABLE_DEBUG}" = "${_TRUE}" ] && writeLogEntry "DEBUG" "${METHOD_NAME}" "${0}" "${LINENO}" "RUN COMMAND -> /usr/bin/env ping -c 1 -q -W ${THREAD_TIMEOUT} \"${VALIDATE_HOSTNAME}\" > /dev/null 2>&1";
/usr/bin/env ping -c 1 -q -W ${THREAD_TIMEOUT} "${VALIDATE_HOSTNAME}" > /dev/null 2>&1;
break;
;;
esac
;;
2)
[ ! -z "${ENABLE_DEBUG}" ] && [ "${ENABLE_DEBUG}" = "${_TRUE}" ] && writeLogEntry "DEBUG" "${METHOD_NAME}" "${0}" "${LINENO}" "RUN COMMAND -> printf \"quit\n\" | /usr/bin/env telnet \"${VALIDATE_HOSTNAME}\" ${VALIDATE_PORT} >/dev/null 2>&1";
printf "quit\n" | /usr/bin/env telnet "${VALIDATE_HOSTNAME}" ${VALIDATE_PORT} >/dev/null 2>&1;
break;
;;
esac
;;
*)
(( ERROR_COUNT += 1 ));
continue;
esac
if [ ${ERROR_COUNT} -ne 0 ]
then
typeset RETURN_CODE=1;
writeLogEntry "ERROR" "${METHOD_NAME}" "${0}" "${LINENO}" "${VALIDATE_HOSTNAME} does not appear to exist in DNS. Unable to determine availability.";
writeLogEntry "STDERR" "${METHOD_NAME}" "${0}" "${LINENO}" "${VALIDATE_HOSTNAME} does not appear to exist in DNS. Unable to determine availability.";
[ ! -z "${ENABLE_DEBUG}" ] && [ "${ENABLE_DEBUG}" = "${_TRUE}" ] && writeLogEntry "DEBUG" "${METHOD_NAME}" "${0}" "${LINENO}" "RETURN_CODE -> ${RETURN_CODE}";
[ ! -z "${ENABLE_DEBUG}" ] && [ "${ENABLE_DEBUG}" = "${_TRUE}" ] && writeLogEntry "DEBUG" "${METHOD_NAME}" "${0}" "${LINENO}" "${METHOD_NAME} -> exit";
[ ! -z "${ENABLE_VERBOSE}" ] && [ "${ENABLE_VERBOSE}" = "${_TRUE}" ] && set +x;
[ ! -z "${ENABLE_TRACE}" ] && [ "${ENABLE_TRACE}" = "${_TRUE}" ] && set +v;
[ ! -z "${ENABLE_PERFORMANCE}" ] && [ "${ENABLE_PERFORMANCE}" = "${_TRUE}" ] && typeset -i END_EPOCH=$(date +"%s");
[ ! -z "${ENABLE_PERFORMANCE}" ] && [ "${ENABLE_PERFORMANCE}" = "${_TRUE}" ] && typeset -i RUNTIME=$(( START_EPOCH - END_EPOCH ));
[ ! -z "${ENABLE_PERFORMANCE}" ] && [ "${ENABLE_PERFORMANCE}" = "${_TRUE}" ] && writeLogEntry "PERFORMANCE" "${METHOD_NAME}" "${0}" "${LINENO}" "${METHOD_NAME} TOTAL RUNTIME: $(( RUNTIME / 60 )) MINUTES, TOTAL ELAPSED: $(( RUNTIME % 60 )) SECONDS";
[ ! -z "${ENABLE_PERFORMANCE}" ] && [ "${ENABLE_PERFORMANCE}" = "${_TRUE}" ] && writeLogEntry "PERFORMANCE" "${METHOD_NAME}" "${0}" "${LINENO}" "${METHOD_NAME} END: $(date +"${TIMESTAMP_OPTS}")";
[ ! -z "${ERROR_COUNT}" ] && typeset -i ERROR_COUNT=0;
[ ! -z "${SEARCH_ENTRY}" ] && unset -v SEARCH_ENTRY;
[ ! -z "${VALIDATE_HOSTNAME}" ] && unset -v VALIDATE_HOSTNAME;
[ ! -z "${VALIDATE_PORT}" ] && unset -v VALIDATE_PORT;
[ ! -z "${METHOD_NAME}" ] && unset -v METHOD_NAME;
return ${RETURN_CODE};
fi
done
;;
esac
RETURN_CODE=${?};
[ ! -z "${ENABLE_DEBUG}" ] && [ "${ENABLE_DEBUG}" = "${_TRUE}" ] && writeLogEntry "DEBUG" "${METHOD_NAME}" "${0}" "${LINENO}" "RETURN_CODE -> ${RETURN_CODE}";
[ ! -z "${ENABLE_DEBUG}" ] && [ "${ENABLE_DEBUG}" = "${_TRUE}" ] && writeLogEntry "DEBUG" "${METHOD_NAME}" "${0}" "${LINENO}" "${METHOD_NAME} -> exit";
[ ! -z "${ENABLE_VERBOSE}" ] && [ "${ENABLE_VERBOSE}" = "${_TRUE}" ] && set +x;
[ ! -z "${ENABLE_TRACE}" ] && [ "${ENABLE_TRACE}" = "${_TRUE}" ] && set +v;
[ ! -z "${ENABLE_PERFORMANCE}" ] && [ "${ENABLE_PERFORMANCE}" = "${_TRUE}" ] && typeset -i END_EPOCH=$(date +"%s");
[ ! -z "${ENABLE_PERFORMANCE}" ] && [ "${ENABLE_PERFORMANCE}" = "${_TRUE}" ] && typeset -i RUNTIME=$(( START_EPOCH - END_EPOCH ));
[ ! -z "${ENABLE_PERFORMANCE}" ] && [ "${ENABLE_PERFORMANCE}" = "${_TRUE}" ] && writeLogEntry "PERFORMANCE" "${METHOD_NAME}" "${0}" "${LINENO}" "${METHOD_NAME} TOTAL RUNTIME: $(( RUNTIME / 60 )) MINUTES, TOTAL ELAPSED: $(( RUNTIME % 60 )) SECONDS";
[ ! -z "${ENABLE_PERFORMANCE}" ] && [ "${ENABLE_PERFORMANCE}" = "${_TRUE}" ] && writeLogEntry "PERFORMANCE" "${METHOD_NAME}" "${0}" "${LINENO}" "${METHOD_NAME} END: $(date +"${TIMESTAMP_OPTS}")";
[ ! -z "${ERROR_COUNT}" ] && typeset -i ERROR_COUNT=0;
[ ! -z "${SEARCH_ENTRY}" ] && unset -v SEARCH_ENTRY;
[ ! -z "${VALIDATE_HOSTNAME}" ] && unset -v VALIDATE_HOSTNAME;
[ ! -z "${VALIDATE_PORT}" ] && unset -v VALIDATE_PORT;
[ ! -z "${METHOD_NAME}" ] && unset -v METHOD_NAME;
return ${RETURN_CODE};
}
https://github.com/cws-khuntly/dotfiles/blob/master/functions.d/F09-network