Question

这是在HP-UX盒上检查SSL证书到期的问题。没有可用的日期-d。

我有以下内容；

#!/bin/bash 

# Exit script if program fails or an unset variable is used
    set -eu 

server="BLABLA"
port="443"
graceperiod_days="30" 

# Get expiry date of SSL certificate, in format 'Jan 31 11:59:00 2018 GMT'
enddate="$(openssl s_client -connect "$server:$port" 2>/dev/null | openssl x509 -noout -enddate | sed -e 's#notAfter=##')" 

# Get today's date in format DD-MM-YYYY
todaysdate="$(date "+%d-%m-%Y")"
    echo "Today's date is $todaysdate" 

# Convert $enddate to format DD-MM-YYYY
enddate_formatted=$(printf '%s\n' "$enddate" | awk '{printf "%02d-%02d-%04d\n",$2,(index("JanFebMarAprMayJunJulAugSepOctNovDec",$1)+2)/3,$4}')
    echo "Certificate expiry date is $enddate_formatted" 

# Compare expiry date with today's date
if "$todaysdate" -ge "$("$enddate_formatted" - "$graceperiod_days")"
    then echo "$todaysdate is greater than $enddate_formatted. SSL certificate has expired!"
elif "$todaysdate" -lt "$("$enddate_formatted" - "$graceperiod_days")"
    then echo "$todaysdate is before $enddate_formatted. Everything is OK!"
else
    echo "ERROR"; fi

据我所知，这应该有效，但是输出是正确的；

Today's date is 29-08-2018
Certificate expiry date is 21-07-2018
./test[22]: 21-07-2018:  not found.
./test[22]: 29-08-2018:  not found.
./test[24]: 21-07-2018:  not found.
./test[24]: 29-08-2018:  not found.
ERROR

出了什么问题？

Answer 1

首先，您需要一种日期，您可以使用以下格式进行算术运算：

todaysdate_seconds=$(date +%s --date "$todaysdate")  # assuming GNU date
gp_seconds=$((graceperiod_days * 86400))
enddate_seconds=$(date +%s --date "$enddate_formatted")

第二，您的if语句缺少可以检查其退出状态的命令。您所拥有的就是此类命令的参数。而是使用

if test "$todaysdate_seconds" -ge "$("$enddate_seconds" - "$gp_seconds")"; then

或更简单的bash算术命令

if (( todaysdate_seconds >= enddate_seconds - gp_seconds )); then

比较HP-UX盒上日期的语法-找不到错误

1 个答案: