gzip: update page (#12892)

pages/common/gzip.md

@@ -5,24 +5,28 @@
 
 - Compress a file, replacing it with a `gzip` archive:
 
-`gzip {{file.ext}}`
+`gzip {{path/to/file}}`
 
 - Decompress a file, replacing it with the original uncompressed version:
 
-`gzip -d {{file.ext}}.gz`
+`gzip {{-d|--decompress path/to/file.gz}}`
 
 - Compress a file, keeping the original file:
 
-`gzip --keep {{file.ext}}`
+`gzip {{-k|--keep path/to/file}}`
 
-- Compress a file specifying the output filename:
+- Compress a file, specifying the output filename:
 
-`gzip -c {{file.ext}} > {{compressed_file.ext.gz}}`
+`gzip {{-c|--stdout path/to/file}} > {{path/to/compressed_file.gz}}`
 
 - Decompress a `gzip` archive specifying the output filename:
 
-`gzip -c -d {{file.ext}}.gz > {{uncompressed_file.ext}}`
+`gzip {{-c|--stdout -d|--decompress path/to/file.gz}} > {{path/to/uncompressed_file}}`
 
-- Specify the compression level. 1=Fastest (Worst), 9=Slowest (Best), Default level is 6:
+- Specify the compression level. 1 is the fastest (low compression), 9 is the slowest (high compression), 6 is the default:
 
-`gzip -9 -c {{file.ext}} > {{compressed_file.ext.gz}}`
+`gzip -{{1..9 -c|--stdout path/to/file}} > {{path/to/compressed_file.gz}}`
+
+- Display the name and reduction percentage for each file compressed or decompressed:
+
+`gzip {{-v|--verbose -d|--decompress path/to/file.gz}}`