[nb] Edit: cli_commands.md

cli_commands.md

@@ -6,6 +6,9 @@
 - [Text Processing](#text-processing)
 - [Torrents](#torrents)
 - [PDF Tools](#pdf-tools)
+- [PDF Sheet Music](#pdf-sheet-music)
+- [Audiobooks](#audiobooks)
+- [Large File Transfer (rclone)](#large-file-transfer-rclone)
 
 ---
 
@@ -15,17 +18,21 @@
 
 ### List content types with node counts
 
+```bash
 drush sqlq 'select count(node.nid) as node_count, node_type.type
             from node
             inner join node_type on node.type = node_type.type
             group by node_type.type'
+```
 
 ### Filter results by keyword (e.g. "2014")
 
+```bash
 drush sqlq 'select count(node.nid) as node_count, node_type.type
             from node
             inner join node_type on node.type = node_type.type
             group by node_type.type' | grep 2014
+```
 
 ---
 
@@ -33,25 +40,31 @@
 
 ### Find and replace inside files (perl)
 
+```bash
 # Single file type in current directory
 perl -pi -w -e 's/SEARCH_FOR/REPLACE_WITH/g;' *.txt
 
 # Recursively across all file types
 perl -pi -w -e 's/thex/robertsonlibrary/g;' **/*.*
+```
 
 ### Find and replace in file names
 
+```bash
 # Rename files matching a pattern, verbose output shows what changed
 rename 's/livero/lives/g' **/*.* -v
+```
 
-## <<<<<<< HEAD
+---
 
 ## Torrents
 
 ### Download via magnet link (aria2c)
 
+```bash
 # aria2c is a lightweight multi-protocol download utility
 aria2c -d ~/Downloads "magnetlink"
+```
 
 ---
 
@@ -59,6 +72,7 @@
 
 ### OCR a PDF (ocrmypdf)
 
+```bash
 # Standard: optimize output, skip pages that already have a text layer
 ocrmypdf --optimize 3 --skip-text input.pdf output.pdf
 
@@ -66,9 +80,11 @@
 # set DPI manually, use page segmentation mode 1 (automatic with OSD)
 ocrmypdf --optimize 3 --image-dpi 300 --output-type pdf \
          --force-ocr --tesseract-pagesegmode 1 input.pdf output.pdf
+```
 
 ### Downsample a PDF to 72dpi (Ghostscript)
 
+```bash
 # Single file
 gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 \
    -dPDFSETTINGS=/screen \
@@ -84,9 +100,11 @@
        -sOutputFile="downsampled/$f" \
        "$f"
 done
+```
 
 ### Check image DPI in PDFs (pdfimages)
 
+```bash
 # Print image info to terminal
 for f in *.pdf *.PDF; do
     echo "=== $f ==="
@@ -94,27 +112,68 @@
     echo ""
 done
 
-    # Save output to images_list.txt instead
+# Save output to images_list.txt instead (appends; delete the file first to start fresh)
 for f in *.pdf *.PDF; do
     [ -f "$f" ] || continue
     echo "=== $f ===" >> images_list.txt
     pdfimages -list "$f" >> images_list.txt
     echo "" >> images_list.txt
 done
+```
 
 ### Scan for CCITT encoding
 
-    # CCITT is a fax-era compression format - flags PDFs that may cause compatibility issues
+CCITT is a fax-era compression format - this flags PDFs that may cause compatibility issues.
+
+```bash
 for f in *.pdf *.PDF; do
     [ -f "$f" ] || continue
     if pdfimages -list "$f" 2>/dev/null | grep -q " ccitt "; then
         echo "$f uses CCITT"
     fi
 done
+```
+
+---
+
+## PDF Sheet Music
+
+### Check page size
+
+```bash
+pdfinfo filename.pdf
+```
+
+### Resize to letter
+
+```bash
+gs -sDEVICE=pdfwrite \
+   -sPAPERSIZE=letter \
+   -dFIXEDMEDIA \
+   -dPDFFitPage \
+   -dNOPAUSE -dBATCH \
+   -sOutputFile=output.pdf input.pdf
+```
+
+### Batch resize to letter
+
+```bash
+mkdir -p resized_music
+for f in *.pdf; do
+    gs -sDEVICE=pdfwrite -sPAPERSIZE=letter -dFIXEDMEDIA -dPDFFitPage \
+       -dNOPAUSE -dBATCH -sOutputFile="resized_music/$f" "$f"
+done
+```
+
+---
+
+## Audiobooks
 
-### Audiobook commands
+### Split an m4b into MP3 chapters (m4b-tool via Docker)
 
-    # cd to desired dir, create 'input' dir and put m4b file in it and run command
+`cd` to the desired directory, create an `input` dir, put the m4b file in it, then run:
+
+```bash
 docker run --rm -it \
   -v "$(pwd)":/data \
   sandreas/m4b-tool \
@@ -122,42 +181,28 @@
   --audio-format mp3 \
   --audio-bitrate 128k \
   --audio-channels 1 \
-      --output-dir "/data/split"
+  --output-dir "/data/split" \
   -vv
-
 ```
-ffmpeg -i Chaos.m4b -map 0:a -f segment -segment_times $(ffprobe -i Chaos.m4b -show_chapters -loglevel error | grep end_time | cut -d= -f2 | tr '\n' ',' | sed 's/,$//') -c:a libmp3lame -q:a 2 chapter_%03d.mp3
-```
-
-# check current dpi
 
-for f in _.pdf_.PDF; do
+### Split an m4b by chapter (ffmpeg)
-echo "=== Images in: $f ==="
-    pdfimages -list "$f"
-echo ""
-done
 
-# Creates (or overwrites) images_list.txt in the current directory
+Reads chapter end times with ffprobe and writes `chapter_000.mp3`, `chapter_001.mp3`, etc.
 
-for f in _.pdf_.PDF; do
+```bash
-if [ -f "$f" ]; then
+ffmpeg -i Chaos.m4b -map 0:a -f segment \
-echo "=== Images in: $f ===" >> images_list.txt
+  -segment_times $(ffprobe -i Chaos.m4b -show_chapters -loglevel error \
-        pdfimages -list "$f" >> images_list.txt
+    | grep end_time | cut -d= -f2 | tr '\n' ',' | sed 's/,$//') \
-echo "" >> images_list.txt
+  -c:a libmp3lame -q:a 2 chapter_%03d.mp3
-fi
+```
-done
 
-# scan for ccitt encoding
+---
 
-for f in _.pdf_.PDF; do
+## Large File Transfer (rclone)
-[ -f "$f" ] || continue
-if pdfimages -list "$f" 2>/dev/null | grep -q " ccitt "; then
-        echo "$f uses CCITT"
-fi
-done
 
-# Large file transfer to gdrive
+### Copy to Google Drive
 
+```bash
 rclone copy file_location file_destination \
   --progress \
   --transfers 4 \
@@ -167,27 +212,4 @@ rclone copy file_location file_destination \
   --drive-chunk-size 64M \
   --log-file rclone.log \
   --log-level INFO
-
+```
-# PDF sheetmusic commands
-
-## check size
-
-`pdfinfo filename.pdf`
-
-## resize to letter
-
-`gs -sDEVICE=pdfwrite \
-   -sPAPERSIZE=letter \
-   -dFIXEDMEDIA \
-   -dPDFFitPage \
-   -dNOPAUSE -dBATCH \
-   -sOutputFile=output.pdf input.pdf`
-
-## batch resize to letter
-
-`mkdir -p resized_music
-for f in *.pdf; do
-  gs -sDEVICE=pdfwrite -sPAPERSIZE=letter -dFIXEDMEDIA -dPDFFitPage -dNOPAUSE -dBATCH -sOutputFile="resized_music/$f" "$f"
-done`
-
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