via Clém

good to know!

trurl

Command line tool for URL parsing and manipulation

Video presentation

Examples

Replace the host name of a URL:

$ trurl --url https://curl.se --set host=example.com
https://example.com/

Create a URL by setting components:

$ trurl --set host=example.com --set scheme=ftp
ftp://example.com/

Redirect a URL:

$ trurl --url https://curl.se/we/are.html --redirect here.html
https://curl.se/we/here.html

Change port number:

$ trurl --url https://curl.se/we/../are.html --set port=8080
https://curl.se:8080/are.html

Extract the path from a URL:

$ trurl --url https://curl.se/we/are.html --get '{path}'
/we/are.html

Extract the port from a URL:

$ trurl --url https://curl.se/we/are.html --get '{port}'
443

Append a path segment to a URL:

$ trurl --url https://curl.se/hello --append path=you
https://curl.se/hello/you

Append a query segment to a URL:

$ trurl --url "https://curl.se?name=hello" --append query=search=string
https://curl.se/?name=hello&search=string

Read URLs from stdin:

$ cat urllist.txt | trurl --url-file -
...

Output JSON:

$ trurl "https://fake.host/hello#frag" --set user=::moo:: --json
[
  {
    "url": "https://%3a%3amoo%3a%3a@fake.host/hello#frag",
    "parts": {
      "scheme": "https",
      "user": "::moo::",
      "host": "fake.host",
      "path": "/hello",
      "fragment": "frag"
    }
  }
]

Remove tracking tuples from query:

$ trurl "https://curl.se?search=hey&utm_source=tracker" --trim query="utm_*"
https://curl.se/?search=hey

Show a specific query key value:

$ trurl "https://example.com?a=home&here=now&thisthen" -g '{query:a}'
home

Sort the key/value pairs in the query component:

$ trurl "https://example.com?b=a&c=b&a=c" --sort-query
https://example.com?a=c&b=a&c=b

Work with a query that uses a semicolon separator:

$ trurl "https://curl.se?search=fool;page=5" --trim query="search" --query-separator ";"
https://curl.se?page=5

Accept spaces in the URL path:

$ trurl "https://curl.se/this has space/index.html" --accept-space
https://curl.se/this%20has%20space/index.html

Install

Linux

It's quite easy to compile the C source with GCC:

$ make
cc  -W -Wall -pedantic -g   -c -o trurl.o trurl.c
cc   trurl.o  -lcurl -o trurl

trurl is also available in some Linux distributions. You can try searching for it using the package manager of your preferred distribution.

Windows

1. Download and run Cygwin installer.
2. Follow the instructions provided by the installer. When prompted to select packages, make sure to choose the following: curl, libcurl-devel, libcurl4, make and gcc-core.
3. (optional) Add the Cygwin bin directory to your system PATH variable.
4. Use make, just like on Linux.

Prerequisites

Development files of libcurl (e.g. libcurl4-openssl-dev or
libcurl4-gnutls-dev) are needed for compilation. Requires libcurl version
7.62.0 or newer (the first libcurl to ship the URL parsing API).

trurl also uses CURLUPART_ZONEID added in libcurl 7.81.0 and
curl_url_strerror() added in libcurl 7.80.0

It would certainly be possible to make trurl work with older libcurl versions
if someone wanted to.

Older libcurls

trurl builds with libcurl older than 7.81.0 but will then not work as
good. For all the documented goodness, use a more modern libcurl.

x)

"for begginers" haha, I'd like to see friends of mine try this one out

I was too lazy to write anything remotely as clean as this so I asked Kagi's integration of Mistral Large:

Sure, here's an example of how you could create a systemd timer to automatically renice existing Google Chrome processes.

1. First, create a new service file. You can use any text editor you like, but for this example, we'll use nano:

sudo nano /etc/systemd/system/renice-chrome.service

2. In the service file, add the following lines:

[Unit]
Description=Renice Google Chrome processes

[Service]
Type=oneshot
ExecStart=/bin/bash -c 'for pid in $(pgrep chrome); do ionice -c3 -p $pid; renice 19 -p $pid; done'

This service file defines a new service that runs a bash command to find all Google Chrome processes (using pgrep chrome), and then applies ionice and renice to each process.

3. Save and close the file.

4. Next, create a new timer file:

sudo nano /etc/systemd/system/renice-chrome.timer

5. In the timer file, add the following lines:

[Unit]
Description=Run renice-chrome.service every hour

[Timer]
OnCalendar=hourly
Persistent=true

[Install]
WantedBy=timers.target

This timer file defines a new timer that runs the renice-chrome.service every hour.

6. Save and close the file.

7. Now, enable and start the timer:

sudo systemctl enable renice-chrome.timer
sudo systemctl start renice-chrome.timer

8. You can check the status of the timer with:

sudo systemctl list-timers

This will show you a list of all active timers, including when they're next due to run.

Please note that this will only affect Google Chrome processes that are already running when the timer runs. If you want to also lower the priority of new Google Chrome processes as they're launched, you would need to use a different approach, such as the script I described in my previous answer.

Also, remember to replace chrome with the correct process name if it's different on your system. You can check the process name with pgrep chrome. If it doesn't return anything, try pgrep chromium or pgrep google-chrome.

très bon concept

Anyway, just before announcing ssh-1.0 in July 1995, I sent this e-mail to IANA:

From ylo Mon Jul 10 11:45:48 +0300 1995 From: Tatu Ylonen ylo@cs.hut.fi
To: Internet Assigned Numbers Authority iana@isi.edu
Subject: request for port number
Organization: Helsinki University of Technology, Finland
Dear Sir, I have written a program to securely log from one machine into another over an
insecure network. It provides major improvements in security and functionality over existing
telnet and rlogin protocols and implementations. In particular, it prevents IP, DNS and
outing spoofing. My plan is to distribute the software freely on the Internet and to get it
into as wide use as possible. I would like to get a registered privileged port number for
the software.

The number should preferably be in the range 1-255 so that it can be used in the WKS field
in name servers. I'll enclose the draft RFC for the protocol below. The software has been in
local use for several months, and is ready for publication except for the port number. If
the port number assignment can be arranged in time, I'd like to publish the software already
this week. I am currently using port number 22 in the beta test.

It would be great if this number could be used (it is currently shown as Unassigned in the
lists). The service name for the software is "ssh" (for Secure Shell).

Yours sincerely, Tatu Ylonen ylo@cs.hut.fi ... followed by protocol specification
for ssh-1.0
The next day, I had an e-mail from Joyce waiting in my mailbox:

Date: Mon, 10 Jul 1995 15:35:33 -0700 From: jkrey@ISI.EDU To: ylo@cs.hut.fi Subject:
Re: request for port number Cc: iana@ISI.EDU
Tatu, We have assigned port number 22 to ssh, with you as the point of contact. Joyce
There we were! SSH port was 22!!!

Displaylink c'est vraiment de la daube

git clone git@github.com:DisplayLink/evdi.git
sudo mv evdi /usr/src/evdi
cd /usr/src
sudo mv evdi-1.12.0 evdi-1.12.0-backup
sudo ln -s evdi/module evdi-1.12.0
cd evdi-1.12.0
sudo make
sudo make install

restic.sh

#!/bin/bash
timeout 30 mount /home/backup/ && time autorestic --config /home/changeme/.autorestic.yml backup -a ; umount /home/backup

restic.service

[Unit]
Description="Restic script"

[Service]
ExecStart=/bin/bash -c "/home/changeme/restic.sh"

restic.timer

[Unit]
Description="Run restic.service 5min after boot and every 24 hours relative to activation time"

[Timer]
OnBootSec=5min
OnUnitActiveSec=24h
OnCalendar=Mon..Fri *-*-* 10:00:*
Unit=restic.service

[Install]
WantedBy=multi-user.target

/etc/fstab

storage.ip.address:/home/changeme/backup /home/backup nfs4  noauto,rw,hard,intr,rsize=8192,wsize=8192,timeo=14 0 0

~/.autorestic.yml

version: 2

locations:
  home:
    from: /home/changeme/
    to: remote
    options:
          backup:
            exclude:
              - 'Dropbox/*'
              - 'Dropbox*/*'
              - '.cache'
              - '.*CacheStorage.*'
              - '.*CachedData.*'
              - '.*Cache.*'
              - '.var/app'
              - '.cargo'
              - '.ssh'
              - '.rustup'
            exclude-file: /home/changeme/.gitignore
backends:
  remote:
    type: local
    path: "/home/backup/"
    key: "changeme"

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