Author:
erics, Posted on Thursday, July 9th, 2020 at 4:27:41pm
Show commits and messages that match
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git log --all --grep='SEARCH_STRING_HERE' |
Include code diffs
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git log --all --grep='SEARCH_STRING_HERE' -p |
Include file names
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git log --all --grep='SEARCH_STRING_HERE' --name-only |
Categories: How-To's, Technology Tags: commit, contains, Find, git, git log, howto, Log, Log message, Message, tips | 
No comments
Author:
erics, Posted on Wednesday, July 8th, 2020 at 3:57:44pm
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my $stamp = strftime "%Y%m%d%H%M%S", 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 | No comments
Author:
erics, Posted on Wednesday, July 8th, 2020 at 3:10:07pm
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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 | No comments
Author:
erics, Posted on Thursday, June 11th, 2020 at 12:07:49pm
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 | No comments
Author:
erics, Posted on Thursday, June 11th, 2020 at 8:10:11am
$merged_object = (object) array_merge((array) $object1, (array) $object2);
Categories: How-To's, Technology Tags: array, Join, Merge, php, Var, Variable | No comments
Author:
erics, Posted on Thursday, June 4th, 2020 at 11:18:32am
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 | No comments
Author:
erics, Posted on Thursday, May 14th, 2020 at 11:14:20am
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 | No comments
Author:
erics, Posted on Monday, May 11th, 2020 at 1:28:22pm
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add_filter( 'user_meta_admin_email_recipient', 'changeAdminEmails' ); function changeAdminEmails( $emails ) { return array( 'youremailtarget1@yourdomain.com', 'youremailtarget2@yourdomain.com' ); } |
Categories: How-To's, Technology Tags: admin, Admin Email, Change, Destination, Edit, Email, howto, meta, modify, Notification, Pro, Target, tips, User, user-meta, user-meta-pro, WordPress, WP, WP User Meta | No comments
Author:
erics, Posted on Saturday, May 9th, 2020 at 10:59:02am
Categories: Weather Tags: May, Snow | No comments
Author:
erics, Posted on Thursday, May 7th, 2020 at 3:17:16pm
I wanted to empty the time series data cache from the Prometheus server to start clean.
The best practice is to use the administrative HTTP API via curl. For example, to clear all data for job mysqld as defined in the prometheus.yml configuration file:
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curl -X POST -g 'http://localhost:9090/api/v1/admin/tsdb/delete_series?match[]={job="mysqld"}' |
If you want to delete ALL data from Prometheus, then execute:
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curl -X POST -g 'http://localhost:9090/api/v1/admin/tsdb/delete_series?match[]={__name__=~".+"}' |
Since Prometheus keeps deleted data for 15 days by default, you may want to speed up that process by executing:
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curl -X POST -g 'http://localhost:9090/api/v1/admin/tsdb/clean_tombstones' |
You can change the default of 15 days by setting the --storage.tsdb.retention option.
NOTE: The administrative HTTP API is disabled by default!
To enable it, add the --web.enable-admin-api argument to the prometheus commend at startup.
For example, this is an excerpt from my /etc/init.d/prometheus service script:
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... PROGNAME=prometheus PROG=/usr/local/prometheus/$PROGNAME USER=root LOGFILE=/var/log/prometheus.log DATADIR=/volumes/data/prometheus LOCKFILE=/var/run/$PROGNAME.pid CONFIG_FILE=/usr/local/prometheus/prometheus.yml start() { echo -n "Starting $PROGNAME: " daemon --user $USER --pidfile="$LOCKFILE" "$PROG --config.file=$CONFIG_FILE --storage.tsdb.path=$DATADIR --storage.tsdb.retention=3d --web.enable-admin-api &>$LOGFILE &" echo $(pidofproc $PROGNAME) >$LOCKFILE echo } |
Credits:
Thanks to ShellHacks – https://www.shellhacks.com/prometheus-delete-time-series-metrics/
Categories: How-To's, Technology Tags: Cache, Clear, Curl, Delete, Empty, howto, Prom, Prometheus, Remove, tips | No comments
