jal jal-tw
jal-tw
/ mrtg_usefull_cmd.txt
Last active
September 12, 2016 16:50
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| # --zero-speed=1000000000 for 1000Mbps | |
| # --zero-speed=100000000 for 100Mbps | |
| cfgmaker --snmp-options=:::::2 --global "WorkDir: /usr/local/www/data/html/mrtg/172.16.1.1" --global "Options[_]: growright, bits" --global "Language: big5" --global 'AddHead[_]:<script type="text/javascript" src="//jal.tw/google_analytics.js"></script>' --zero-speed=1000000000 --show-op-down --if-filter='$if_type!=1 && $if_type!=53 && $if_type!=24 && $if_type!=131 && $if_type!=135 && $if_type!=136 && $if_type!=137 && $if_type!=142 && $if_type!=150 && $if_type!=217 && $if_type!=218 && $if_type!=222 && $if_type!=223' community_readonly@172.16.1.1 --output=172.16.1.1.cfg | |
| # -i in-place edit, only work for GNU sed, not portable.(直接改原始檔案，僅支援 GNU sed，跨平台有可能會失效) | |
| /usr/bin/sed -i '' -e 's/iso-8859-15/big5/g' */*/index.html | |
| /usr/bin/sed -i '' -e '/Command line/d' */*/index.html | |
| /usr/bin/sed -i '' -e '/Command-Line/d' */*/index.html | |
| /usr/bin/sed -i '' -e '/commandline/d' */*/index.html | |
| /usr/bin/sed -i '' -e '/HTTP-EQUIV="Expires"/d' */*/index |
jal-tw
/ shell-script_with_lock_and_pid.sh
Created
December 19, 2017 10:33
C shell script, lock file, pid, check process alive
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| #!/bin/sh | |
| name="shell-script" | |
| now=`/bin/date` | |
| echo "Starting at ${now}." | |
| LOCKFILE="/var/run/${name}.lock" | |
| if [ -f ${LOCKFILE} ] | |
| then |
jal-tw
/ Strongest_SSL_Setting
Last active
March 6, 2018 02:03
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| Suite for nginx, apache2.4, dovecot, postfix | |
| Tips: | |
| Understand Cipher String Format | |
| https://msdn.microsoft.com/en-us/library/windows/desktop/aa374757%28v=vs.85%29.aspx?f=255&MSPPError=-2147217396 | |
| ALL:!DH:!kRSA:!SRP:!kDHd:!DSS:!aNULL:!eNULL:!EXPORT:!DES:!3DES:!MD5:!PSK:!RC4:!ADH:!LOW@STRENGTH | |
| Apache 2.4 |
jal-tw
/ DNS Count Command
Created
March 7, 2018 18:43
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| /* jal.180308 */ | |
| 參考資料: https://www.cloudflare.com/dns/dnssec/ecdsa-and-dnssec/ | |
| curl -s http://www.internic.net/domain/root.zone | awk '$4 == "DS" { print $6}' | sort -n | uniq -c | |
| 63 5 (RSA/SHA-1) | |
| 525 7 (RSASHA1-NSEC3-SHA1) | |
| 2150 8 (RSA/SHA-256) | |
| 38 10 (RSA/SHA-512) | |
| curl -s http://www.internic.net/domain/root.zone | awk '$4 == "DS" { print $1, $5, $6}' | uniq | awk '{print $3}' | sort | uniq -c |
jal-tw
/ Update_FreeBSD_Old_Version.txt
Last active
April 13, 2018 09:20
How to Update Really Old FreeBSD Version
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| // This document showing how to upgrade some really old version's FreeBSD to latest via Internet. | |
| // ================================================ | |
| // Part 0: Before you start anything | |
| // ================================================ | |
| # reboot | |
| // Make sure your server's OS and hardware are both fine. | |
| // ================================================ | |
| // Part 1: Reversion from stable to release version |
jal-tw
/ email_backup_www_file.sh
Created
April 13, 2018 18:19
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| #!/bin/sh | |
| DATE=`/bin/date +%Y%m%d` | |
| TIME=`/bin/date "+%Y-%m-%d %H:%M:%S"` | |
| DDIR=`/usr/bin/readlink /home/hosts/www/jal.tw/html` | |
| SDIR="/home/hosts/www/jal.tw" | |
| BDIR="/root/shell/dump" | |
| PASS="PleaseTellMe" | |
| TITLE="jal.tw" | |
| EMAIL="jal@jal" |
jal-tw
/ email_backup_dns_file.sh
Created
April 13, 2018 19:20
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| #!/bin/sh | |
| DATE=`/bin/date +%Y%m%d` | |
| TIME=`/bin/date "+%Y-%m-%d %H:%M:%S"` | |
| SDIR="/usr/local/etc" | |
| DDIR="namedb" | |
| BDIR="/home/backup" | |
| PASS="IWISHYOUCANTELLME" | |
| TITLE="jal.tw dns" | |
| EMAIL="jal@jal" |
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| Apache process size 1 | |
| ps -ylC httpd --sort:rss | awk '{sum+=$8; ++n} END {print "Tot="sum"("n")";print "Avg="sum"/"n"="sum/n/1024"MB"}' | |
| Apache process size 2 | |
| wget https://raw.githubusercontent.com/pixelb/ps_mem/master/ps_mem.py | |
| sudo python ps_mem.py | |
jal-tw
/ Convert PEM key and certificate to Java keystore for Tomcat(Coyote) used
Last active
March 20, 2020 08:35
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| 1. Convert PEM to PKCS12 | |
| openssl pkcs12 -export -out jal.tw.pfx -name tomcat -inkey jal.tw.key -in jal.tw.crt -CAfile jal.tw.CA.bundle -caname root | |
| 2. Import private key and certificate into keystore | |
| # "changeit" is the password, you can modify it as your wish and make sure server.xml also too. | |
| # keystoreFile="jal.tw.jks" keystorePass="changeit" | |
| # deststorepass and destkeypass must be same. | |
| # On Tomcat/Coyote don't chanege alias(tomcat), let tomcat can find it correctly. | |
| keytool -importkeystore -deststorepass changeit -destkeypass changeit -destkeystore jal.tw.pkcs12.jks -srckeystore jal.tw.pfx -srcstoretype PKCS12 -srcstorepass changeit -alias tomcat -deststoretype PKCS12 |
jal-tw
/ convert_nss_db_to_pem.sh
Last active
February 12, 2020 07:00
Convert NSS Root CA DB file to PEM format
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| # This script is bundle in curl source code | |
| # download scritp from https://github.com/curl/curl/tree/master/lib | |
| wget https://raw.githubusercontent.com/curl/curl/master/lib/mk-ca-bundle.pl | |
| chmod 700 mk-ca-bundle.pl | |
| # Make sure system have perl | |
| ./mk-ca-bundle.pl | |
| # You will get ca-bundle.crt that content all Root CA in pem format |
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