Programming language cook book
Contents
Mostly just for me to remember stuff
I might use a command once, then not again for years. Hopefully I can jog my memory quickly here. YMMV
ssh
rem I used this to copy keys to linux hosts 'cause `ssh-copy-id` wasn't working for me in powershell.
cat C:\Users\jhalb\.ssh\id_rsa | ssh jeffa@rodaw "cat >> ~/.ssh/authorized_keys"
Python
I wanted a json utc datetime for a MQTT payload. Found the arrow module that is much like moment.js for javascript.
import arrow
print (arrow.get(arrow.utcnow()).for_json()
results in: "2015-08-27T15:03:07.427351+00:00" I'd like to trim it further and replace the +00:00 with Z. ??? and less precision on the seconds.
Documentation for ISO 8601
vim
comment a block
What's a quick way to comment/uncomment lines in Vim? (Stack overflow)
ctl v (at start of block)
down arrow (to end of block)
shift I, #
or
: s/^/# <- more likely
esc
global search and replace
:
%s/findString/replaceString/g
Apache
Resources
- Short URLs at Mediwiki
utility
# VirtualHost configuration:
apachectl -S
# Check .conf syntax
apachectl configtest
# What modules loaded?
httpd -M
apachectl -M
Redirect site root to wiki
This works to redirect to www.somedomain.tld from www.somedomain.tld/w - basically to point the root to your wiki as home / first page.
<VirtualHost *:80>
RewriteEngine on
RewriteRule ^/*$ %{DOCUMENT_ROOT}/w/index.php [L]
</VirtualHost>
MediaWiki Short URLs
<VirtualHost *:443>
ServerName www.redacted.info
ServerAlias redacted.info
DocumentRoot /var/www/redacted.info
CustomLog /var/log/httpd/redacted.info-access.log combined
ErrorLog /var/log/httpd/redacted.info-error.log
Include /etc/letsencrypt/options-ssl-apache.conf
SSLCertificateFile /etc/letsencrypt/live/redacted.com/cert.pem
SSLCertificateKeyFile /etc/letsencrypt/live/redacted.com/privkey.pem
Include /etc/letsencrypt/options-ssl-apache.conf
SSLCertificateChainFile /etc/letsencrypt/live/redacted.com/chain.pem
RewriteEngine on
RewriteRule ^/*$ %{DOCUMENT_ROOT}/w/index.php [L]
alias /wiki /var/www/redacted.info/w/index.php
# Redirect / to Main Page
RewriteRule ^/*$ %{DOCUMENT_ROOT}/w/index.php [L]
</VirtualHost>
Mediawiki
Visual Editor
parsoid
install start stop status
[root@myhost parsoid]# systemctl daemon-reload # Do this if when you make changes to a service file
[root@myhost parsoid]# systemctl start parsoid # start
[root@myhost parsoid]# systemctl status parsoid # check status
[root@myhost parsoid]# systemctl enable parsoid # start parsoid on boot
systemd service file.
[Unit]
Description=Mediawiki Parsoid web service on node.js
Documentation=http://www.mediawiki.org/wiki/Parsoid
Wants=local-fs.target network.target
After=local-fs.target network.target
[Install]
WantedBy=multi-user.target
[Service]
Type=simple
User=nobody
Group=nobody
WorkingDirectory=/opt/parsoid
EnvironmentFile=-/etc/parsoid/parsoid.env
ExecStart=/usr/bin/node /opt/parsoid/bin/server.js
KillMode=process
Restart=on-success
PrivateTmp=true
StandardOutput=syslog
stunnel
# groupadd -g 51 stunnel
# useradd -c "stunnel Daemon" -d /var/run/stunnel -g stunnel -s /bin/false -u 51 stunnel
/etc/stunnel/stunnel.conf
cert = /etc/letsencrypt/live/redacted/fullchain.pem
key = /etc/letsencrypt/live/recacted/privkey.pem
chroot = /var/run/stunnel
setuid = stunnel
setgid = stunnel
pid = /stunnel.pid
[parsoid]
accept = 8143
connect = 8142
/lib/systemd/system/stunnel.service
[Unit]
Description=SSL tunnel for network daemons
After=network.target
After=syslog.target
[Install]
WantedBy=multi-user.target
Alias=stunnel.target
[Service]
Type=forking
ExecStartPre=-/usr/bin/mkdir /var/run/stunnel
ExecStartPre=/usr/bin/chown -R stunnel:stunnel /var/run/stunnel/
ExecStartPre=-/bin/chmod 700 /var/run/stunnel
ExecStart=/usr/bin/stunnel /etc/stunnel/stunnel.conf
ExecStop=/usr/bin/killall -9 stunnel
RuntimeDirectory=stunnel
# Give up if ping don't get an answer
TimeoutSec=600
Restart=always
#PrivateTmp=false
PrivateTmp=false
EnvironmentFile=-/etc/stunnel/stunnel.conf
#PermissionsStartOnly=true
# RemainAfterExit=yes
Display unformated like code snippets
lang= text bash csharp cpp php xml py javascript (or js) <source lang="bash"> code snippet </source>
My Simple Template
{{ blockquote| text here }}
upgrade and move
- upgrade php to allow mediawiki upgrade
- upgrade mediawik to allow for contact page, VisualEditor etc...
- Implement short URLs for better SEO and they're pretty.
current soon to be old wiki version info
Installed software
Product Version
MediaWiki 1.21.1
PHP 5.3.3 (apache2handler)
MySQL 5.1.73
Entry point URLs
Entry point URL
Article path /wiki/index.php/$1
Script path /wiki
index.php /wiki/index.php
api.php /wiki/api.php
load.php /wiki/load.php
Installed extensions
Special pages
ContactPage (Version 2.2) Contact form for visitors Daniel Kinzler and Sam Reed
Renameuser Adds a special page to rename a user (need renameuser right) Ævar Arnfjörð Bjarmason and Aaron Schulz
Parser hooks
ParserFunctions (Version 1.5.1) Enhance parser with logical functions Tim Starling, Robert Rohde, Ross McClure and Juraj Simlovic
SyntaxHighlight (Version 1.0.8.11) Provides syntax highlighting <syntaxhighlight> using GeSHi - Generic Syntax Highlighter Brion Vibber, Tim Starling, Rob Church and Niklas Laxström
Media handlers
PDF Handler Handler for viewing PDF files in image mode. Martin Seidel and Mike Połtyn
Other
Gadgets Lets users select custom CSS and JavaScript gadgets in their preferences Daniel Kinzler and Max Semenik
WikiEditor (Version 0.3.1) Provides an extendable wikitext editing interface and many feature-providing modules Trevor Parscal, Roan Kattouw, Nimish Gautam and Adam Miller
Parser extension tags
<gallery>, <nowiki>, <pre>, <source> and <syntaxhighlight>
Parser function hooks
anchorencode, basepagename, basepagenamee, canonicalurl, canonicalurle, defaultsort, displaytitle, expr, filepath, formatdate, formatnum, fullpagename, fullpagenamee, fullurl, fullurle, gender, grammar, if, ifeq, iferror, ifexist, ifexpr, int, language, lc, lcfirst, localurl, localurle, namespace, namespacee, namespacenumber, ns, nse, numberingroup, numberofactiveusers, numberofadmins, numberofarticles, numberofedits, numberoffiles, numberofpages, numberofusers, numberofviews, padleft, padright, pagename, pagenamee, pagesincategory, pagesize, plural, protectionlevel, rel2abs, special, speciale, subjectpagename, subjectpagenamee, subjectspace, subjectspacee, subpagename, subpagenamee, switch, tag, talkpagename, talkpagenamee, talkspace, talkspacee, time, timel, titleparts, uc, ucfirst and urlencode
Fedora fc.22
I opened up node.js on port 3000 with this command.
firewall-cmd --permanent --add-port=3000/tcp
# be sure to reload
firewall-cmd --reload
# tail a log with colored warnings
#> tail -f /var/log/maillog|egrep --ignore-case --line-buffered --color=auto 'reject|ERROR|WARN|$'
7-zip
I wanted to create a .zip file for my FDDSE project from the command line. Perhaps in a batch file.
7z a -tzip FDDSE.zip FDDSE
VS 2015 IISExpress
.vs\config\applicationhost.config
%userprofile%\Documents\IISExpress\
netsh http show urlacl
netsh http add urlacl url=http://localhost:60262/ user=everyone
netsh http delete urlacl url=http://*:60262/
I 'ended' Microsoft.VsHub.Server.HttpHostx64.exe with TaskManager
// punch a hole in the firewall
// oopps just noticed I'm running public profile at home on nat. Another toDo
C:\Users\jeffa>netsh advfirewall firewall add rule name="IISExpressWeb" dir=in protocol=tcp localport=60262 profile=private remoteip=localsubnet action=allow
Ok.
C:\Users\jeffa>netsh advfirewall firewall add rule name="IISExpressWeb" dir=in protocol=tcp localport=60262 profile=public remoteip=localsubnet action=allow
Ok.
CentOS 7
Nifty resources
- How to set up a mail server on a GNU / Linux system
- MYSQL_TABLE(5) man page HEY! Finish reading this! Yea you Jeff!
yum etc...
- yum list installed
- repoquery --list php56u
- yum search all php-imap
- yum install php56u-imap
- rpm -qi postfix # show currently installed info
bacula
- bconsole
- status client
smtp etc...
mailq
postfix flush
postmap -q anexample.com mysql:/afilenameWithQuery.cf
dovecot -n ; display configuration / check configuration syntax
echo `hostname` `cat /etc/*elease*` "this is some blah blah testing body text" | mail -s "Testing 1 2 3" somebody@somewhere.tld
Find a message ID.
[root@redacted cron.d]# mailq
-Queue ID- --Size-- ----Arrival Time---- -Sender/Recipient-------
B077861458 758 Sat Jan 20 08:17:22 apache@redacted.net
(connect to example.com[2606:2800:220:1:248:1893:25c8:1946]:25: Network is unreachable)
you@example.com
-- 0 Kbytes in 1 Request.
# Read it.
[root@dediserve1 conf]# postcat -q A9D1061AF9
....
# Delete it.
[root@dediserve1 cron.d]# postsuper -d B077861458
postsuper: B077861458: removed
postsuper: Deleted: 1 message
[root@redacted cron.d]# mailq
Mail queue is empty
[root@redacted cron.d]#
letscncrypt
https://crt.sh/?q=dediserve1.jhalbrecht.net
[root@thehost]# certbot certificates
[root@thehost]# certbot delete # prompted for certs to remove
[root@thehost]# certbot delete --cert-name delthisdname
[root@thehost]#
[root@thehost]#
[root@thehost]#
[root@thehost]#
stuff...
find ./ -exec ls -l {} + | less
sed -i 's/findstring/replacestring/g' *
systemctl
edit /etc/systemd/system.conf add LogLevel=debug for increased logging when debugging systemctl start something
systemctl cat bacula-fd will display the current bacula-fd.service file
iptables
iptables -L --line-numbers
iptables -D INPUT 3
iptables -L
iptables -S
service iptables save
Debian 9
Install
I'm attempting to install Stretch on a pair of 4TB drives in a Raid 1 configuration.
Some linke and notes
Windows
hosts and flush
I like to put the dns of the new site in hosts before I change name service enabling to verify proper operation first.
Elevate your privileges to Administrator
Edit c:\Windows\System32\Drivers\etc\hosts
ipconfig /flushdns
Once done testing don't forget to remove temporary ip from hosts
# Samba stuff you probably want to remember
smbclient -L \\192.168.1.122 -U wmctv
mount -t cifs -o username=wmctv //192.168.1.122/wmctv /tmp/wmctv
PS C:\Users\jhalb> net use
New connections will be remembered.
Status Local Remote Network
-------------------------------------------------------------------------------
OK \\192.168.1.122\tns1snap Microsoft Windows Network
OK \\debbie\IPC$ Microsoft Windows Network
The command completed successfully.
PS C:\Users\jhalb> net use /delete \\192.168.1.122\tns1snap
\\192.168.1.122\tns1snap was deleted successfully.
PS C:\Users\jhalb> net use
New connections will be remembered.
Status Local Remote Network
-------------------------------------------------------------------------------
OK \\debbie\IPC$ Microsoft Windows Network
The command completed successfully.
PS C:\Users\jhalb> net use \\192.168.1.122\work /user:uwork uwork
The command completed successfully.
PS C:\Users\jhalb>
Not yet organized
Stuff I need to integrate into some order but I'm busy with other stuff and don't want to forget
- journalctl -b -u fail2ban
- fail2ban-client status
- fail2ban-client status jail_name
disk stuff
is grub installed?
[root@seven ~]# dd if=/dev/sda bs=1 count=512 | grep -aob GRUB
378:GRUB
512+0 records in
512+0 records out
512 bytes (512 B) copied, 0.00301491 s, 170 kB/s
[root@seven ~]#
install boot on /dev/sdb
[root@seven ~]# grub2-install /dev/sdb
Installing for i386-pc platform.
grub2-install: warning: Couldn't find physical volume `(null)'. Some modules may be missing from core image..
grub2-install: warning: Couldn't find physical volume `(null)'. Some modules may be missing from core image..
Installation finished. No error reported.
[root@seven ~]#
