Entries Categorized as 'Technology'
Author:
erics, July 8th, 2020
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my $stamp = strftime $pattern, gmtime time; ## in-place update for the file our $^I = ".$stamp"; local @ARGV = ($fullpath); while ( <ARGV> ) { if (/$regex/) { next; } # this print is the critical part to write the line back to the file print; } $^I = undef; |
Categories: How-To's, Technology Tags: Change, Edit, Edit In Place, howto, in place, Inline, modify, perl, Place, Script, tips
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Author:
erics, July 8th, 2020
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my $stamp = strftime "%Y%m%d%H%M%S", gmtime time; my $stamp = strftime "%Y%m%d%H%M%S", localtime time; |
Categories: How-To's, Technology Tags: Date, datetime, gmtime, howto, localtime, perl, Stamp, strftime, time, timedate, Timestamp, tips
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Author:
erics, June 11th, 2020
If you ever want to view your JSON as a human ;-} $pretty_json = json_encode($data, JSON_PRETTY_PRINT); https://www.php.net/manual/en/function.json-encode.php
Categories: How-To's, Technology Tags: howto, JSON, php, Pretty, Pretty Print, Print, tips
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Author:
erics, June 11th, 2020
$merged_object = (object) array_merge((array) $object1, (array) $object2);
Categories: How-To's, Technology Tags: array, Join, Merge, php, Var, Variable
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Author:
erics, June 4th, 2020
Outer Block – set the line-height: {some value} Inner Block – set the line-height: normal, along with display: inline-block; vertical-align: middle; Also works if you set OUTER height instead of the line-height (or together with the same value as the height).
Categories: How-To's, Technology Tags: Align, CSS, height, HotTo, html, line, line-height, normal, tips, Vertical
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Author:
erics, May 14th, 2020
Recently, I had a list of command-line options in a table, and my browser was automatically inserting a line-break in-between the hyphen and the option character.
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<td> <code class="option">--help, -h</code> </td> |
To prevent this, I simply added a little CSS:
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<style> code.option { white-space: nowrap; } </style> |
NOTE: Never use the
HTML directive – it is obsolete!
Categories: How-To's, Technology Tags: break, howto, line break, nobr, Prevent, tips
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Author:
erics, May 11th, 2020
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add_filter( 'user_meta_admin_email_recipient', 'changeAdminEmails' ); function changeAdminEmails( $emails ) { return array( 'youremailtarget1@yourdomain.com', 'youremailtarget2@yourdomain.com' ); } |
Categories: How-To's, Technology Tags: admin, Admin Email, Change, Destination, Edit, Email, howto, meta, modify, Notification, Pro, Target, tips, User, user-meta, user-meta-pro, WordPress, WP, WP User Meta
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Author:
erics, May 7th, 2020
I wanted to empty the time series data cache from the Prometheus server to start clean. The best practice is to use the administrative HTTP API via curl. For example, to clear all data for job mysqld as defined in the prometheus.yml configuration file:
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curl -X POST -g 'http://localhost:9090/api/v1/admin/tsdb/delete_series?match[]={job="mysqld"}' |
If you want to delete ALL data from Prometheus, then […]
Categories: How-To's, Technology Tags: Cache, Clear, Curl, Delete, Empty, howto, Prom, Prometheus, Remove, tips
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Author:
erics, May 6th, 2020
I ran letsencrypt-auto renew and got the following error:
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root@prod06b:/etc/httpd/conf.d # /root/letsencrypt/letsencrypt-auto renew Error: couldn't get currently installed version for /opt/eff.org/certbot/venv/bin/letsencrypt: Traceback (most recent call last): File "/opt/eff.org/certbot/venv/bin/letsencrypt", line 7, in <module> from certbot.main import main File "/opt/eff.org/certbot/venv/local/lib/python2.7/dist-packages/certbot/main.py", line 2, in <module> from certbot._internal import main as internal_main File "/opt/eff.org/certbot/venv/local/lib/python2.7/dist-packages/certbot/_internal/main.py", line 10, in <module> import josepy as jose File "/opt/eff.org/certbot/venv/local/lib/python2.7/dist-packages/josepy/__init__.py", line 41, in <module> from josepy.interfaces import JSONDeSerializable File "/opt/eff.org/certbot/venv/local/lib/python2.7/dist-packages/josepy/interfaces.py", line 7, in <module> from josepy import errors, util File "/opt/eff.org/certbot/venv/local/lib/python2.7/dist-packages/josepy/util.py", line 7, in <module> import OpenSSL File "/opt/eff.org/certbot/venv/local/lib/python2.7/dist-packages/OpenSSL/__init__.py", line 8, in <module> from OpenSSL import crypto, SSL File "/opt/eff.org/certbot/venv/local/lib/python2.7/dist-packages/OpenSSL/crypto.py", line 12, in <module> from cryptography import x509 ImportError: No module named cryptography |
The solution in this article gave me the answer:
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sudo rm -rf /opt/eff.org/* sudo pip install -U certbot sudo certbot renew --debug |
Turns out Python was old at version 2.7, so did the following also:
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sudo yum -y install python36 sudo alternatives --config python sudo pip install --upgrade pip |
Also had to change the cron job script to call certbot directly instead of letsencrypt-auto : vi /root/letsencrypt-cron.sh
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#!/bin/sh # # letsencrypt-cron.sh # #OLD: if ! /root/letsencrypt/letsencrypt-auto renew > /var/log/letsencrypt/renew.log 2>&1 ; then #NEW: if ! /usr/bin/certbot renew > /var/log/letsencrypt/renew.log 2>&1 ; then echo Automated renewal failed: cat /var/log/letsencrypt/renew.log exit 1 fi apachectl graceful |
Categories: How-To's, Technology Tags: AWS, AWS Linux, cert, Certbot, howto, Install, Linux, pip, Python, Renew, ssl, tips, upgrade, Yum
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Author:
erics, April 24th, 2020
I needed to take a directory which had already run git init and needed to create the remote origin on our main internal git server.
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ssh git@gitserver cd ~git mkdir myrepo cd myrepo git --bare init exit cd myproject git push ssh://git@gitserver/home/git/myrepo +master:master cd .. mv myproject myproject.orig git clone ssh://git@gitserver/home/git/myrepo myproject cd myproject |
Categories: How-To's, Technology Tags:
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