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--- 5_years_of_miscellaneous_notes [2025/02/03 19:05] – dougy147
+++ 5_years_of_miscellaneous_notes [2025/02/03 19:25] (current) – dougy147
@@ Line 1: / Line 1: @@
 <!DOCTYPE markdown>
-:!: Those are random notes I took when confronted to unique or recurrent problems.
+:!: This is a //pot pourri// of notes I took when confronted to unique or recurrent problems.
 Be careful as some of them could be obsolete. :-?
@@ Line 32: / Line 32: @@
 In `/etc/cron.d/certbot` I added `0 */12 * * * root certbot renew --no-random-sleep-on-renew && systemctl restart postfix dovecot`
-# Upgrade every OpenWrt packages
+# Upgrade every OpenWrt packages at once
 ```console
@@ Line 47: / Line 47: @@
 ```
-# Dump mysql database
+# Dump a mysql database
 ```console
@@ Line 55: / Line 55: @@
 ```
-# Sort in place and keep unique
+# Sort in place and remove duplicate lines
 ```
@@ Line 61: / Line 61: @@
 ```
-# Process substitution to filter an output to file but keep whole output in terminal output
+# Filter an output to file but keep whole output in terminal output
 ```
@@ Line 67: / Line 67: @@
 ```
-This will print "hello world" on screen, but keep only "world" in output.txt.
+This uses process substitution, and will print "hello world" on the screen, but keep only "world" in output.txt.
@@ Line 73: / Line 73: @@
 ```console
-# web history sorted by date
+# display web history sorted by date
-$ sqlite3 ~/.mozilla/firefox/**xxxx**.default-release-**xxxx**/places.sqlite "SELECT datetime(moz_historyvisits.visit_date/1000000,'unixepoch'), moz_places.url FROM moz_places, moz_historyvisits WHERE moz_places.id = moz_historyvisits.place_id"|sort
+$ sqlite3 ~/.mozilla/firefox/xxxx.default-release-xxxx/places.sqlite "SELECT datetime(moz_historyvisits.visit_date/1000000,'unixepoch'), moz_places.url FROM moz_places, moz_historyvisits WHERE moz_places.id = moz_historyvisits.place_id"|sort
-# unique urls visited
+# display all unique visited urls
-$ sqlite3 ~/.mozilla/firefox/**xxxx**.default-release-**xxxx**/places.sqlite "SELECT url FROM moz_places"
+$ sqlite3 ~/.mozilla/firefox/xxxx.default-release-xxxx/places.sqlite "SELECT url FROM moz_places"
 ```
@@ Line 122: / Line 122: @@
 Now you can write `echo "this is printed" # this is not`
-# Break lines when compiling ".md" to ".pdf" with pandoc
+# Break lines in code blocks when compiling ".md" to ".pdf" with pandoc
 Add this to the YAML header options:
@@ Line 855: / Line 855: @@
 I needed to try `bash-3.2` that is the default shell on macOS. Thanks to Docker it's simple :
-`docker run -it bash:3.2`
+```
+docker run -it bash:3.2
+```
 # Change Firefox URL bar size
-`about:config` ,  `devp`  , `layout.css.devPixelsPerPx`  => from `-1` to `1.5` (or less or more)
+`about:config` =>  `devp`  => `layout.css.devPixelsPerPx` => replace `-1` with `1.5` (or less or more)
 # Recursively download a website with wget
@@ Line 878: / Line 880: @@
 # Check size and sort by size
-`du -sh -- * | sort -h`
+```
+du -sh -- * | sort -h
+```
 # Mount an ISO
-`mount /path/to/image.iso /mnt/iso -o loop`
+```
+mount /path/to/image.iso /mnt/iso -o loop
+```
 # Fonts in ArchLinux
@@ Line 899: / Line 905: @@
 Don't forget to change `USER`, `SERVER_URL`:
-`ssh USER@SERVER_URL "sudo -S dd if=/dev/mmcblk0 bs=64k status=progress | gzip -1 -" | dd of=rpiimg.gz bs=64k`
+```
+ssh USER@SERVER_URL "sudo -S dd if=/dev/mmcblk0 bs=64k status=progress | gzip -1 -" | dd of=rpiimg.gz bs=64k
+```
 # Use server as a proxy
-`ssh -C2qTnN -D 8080 USER@SERVER_URL`
+```
+ssh -C2qTnN -D 8080 USER@SERVER_URL
+```
 Then in the browser: create a SOCKS proxy with url 127.0.0.1:8080.
@@ Line 909: / Line 919: @@
 # Print from command line
-`lpr file.txt -P PRINTER_NAME #tab to find printer`
+```
+lpr file.txt -P PRINTER_NAME #tab to find printer
+```