gwpl

Keybase proof

I hereby claim:

• I am gwpl on github.
• I am gwpl (https://keybase.io/gwpl) on keybase.
• I have a public key ASCSgZW4fP-pVrJ8zG0GbajAW_pSNWHrZjkhXWCYxS2fZAo

To claim this, I am signing this object:

gwpl

[root@btrfs-testdrive] # btrfs qgroup create 1/100 /mnt/btrfs
[root@btrfs-testdrive] # btrfs qgroup assign 0/276 1/100 /mnt/btrfs
[root@btrfs-testdrive] # btrfs qgroup show /mnt/btrfs
qgroupid rfer       excl       
-------- ----       ----       
0/5      16384      16384      
0/256    2864136192 2864136192 
0/258    833703936  833703936  
0/259    52510720   52510720   

gwpl

#!/bin/bash
# 2017-12-14 Playing with BTRFS quota limits - Grzegorz Wierzowiecki
# gist: 
# Below script is prepared for easy experimentation, and should run copy-and-paste
# (you need permissions to create lvm groups, etc. therefore root)
# It
# * setup 128MiB btrfstest in selected volume group
# * setup quotas (32MiB and 64MiB) and test them
# * cleanup
# Helpful references:

gwpl

# 2017-12-15 xattr command line Semantic Desktop Style File Tagging
# this gist: https://gist.github.com/gwpl/a00e18bc150f1e3518335d13c5e46ad7
# Perform on xattr filesystem:

setfattr -n user.xdg.tags -v "foo,bar" file.png
setfattr -n user.xdg.comment -v "example comment" file.png
setfattr -n user.baloo.rating -v "10" file.png

getfattr -d file.png
# Screenshot how it looks like in Dolphin GUI : https://imgur.com/oguuJNm

gwpl

#!/bin/bash

# Example usecase:
# inotify_exec_on_file_change.sh /path/phd paper.tex pdflatex paper.tex

dirn="$1"
filen="$2"
shift 2

echo "Watching directory $dirn for changes of file $filen . Watching directory insteaf of file to overcome behaviour of many text editors that replace file - Thanks to Giles and see his answer https://superuser.com/a/181543/81861 for more details. In case of matching even I execute:" $@

gwpl

<a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/">
  <img alt="Creative Commons Licence" style="border-width:0" src="https://i.creativecommons.org/l/by-sa/4.0/88x31.png" />
</a><br />
<span xmlns:dct="http://purl.org/dc/terms/" href="http://purl.org/dc/dcmitype/Dataset"
  property="dct:title" rel="dct:type">${title}</span>
  by
<a xmlns:cc="http://creativecommons.org/ns#" href="${authors_url}" property="cc:attributionName"
  rel="cc:attributionURL">${aurhor_name}</a>
is licensed under a
<a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/">

gwpl

Converted w3schools example from relative "q" to absolute "Q" to make it more readiable according to controlpoints A,B,C.
<br/>

<svg height="400" width="450">
<path id="lineAB" d="M 100 350 l 150 -300" stroke="red" stroke-width="3" fill="none" />
  <path id="lineBC" d="M 250 50 l 150 300" stroke="red" stroke-width="3" fill="none" />
  <path d="M 175 200 l 150 0" stroke="green" stroke-width="3" fill="none" />
  <path d="M 100 350 Q 250 50 400 350" stroke="blue" stroke-width="5" fill="none" />
  <!-- Mark relevant points -->
  <g stroke="black" stroke-width="3" fill="black">

gwpl

# source: https://stackoverflow.com/a/20910449/544721

norm="$(printf '\033[0m')" #returns to "normal"
bold="$(printf '\033[0;1m')" #set bold
red="$(printf '\033[0;31m')" #set red
boldred="$(printf '\033[0;1;31m')" #set bold, and set red.

somecommand | sed -e "s/someregexp/${boldred}&${norm}/g"  # will color any occurence of someregexp in Bold red

printf "%s" "$red" ; locate something ; printf "%s" "$norm"  # will color output of locate something in red

gwpl

#!/bin/bash

# Usage:
# odtgrep.sh IamSearchingThis *.odt
# find -name '*.odt' -exec odtgrep.sh IamSearchingThis "{}" \;
# or
# odtgrep.sh -C 5 IamSearchingThis *.odt
# find -name '*.odt' -exec odtgrep.sh -C 5 IamSearchingThis "{}" \;

 

gwpl

#cli #linux #snippet
# find lines only in file1
comm -23 file1 file2 

# find lines only in file2
comm -13 file1 file2 

# find lines common to both files
comm -12 file1 file2