fix: correct sed chapter sample (#353)

* fix: correct the 'sed' chapter sample file

* fix: correct weight to match book

* fix: correct quotes to match book

* fix: correct samples

* fix: update diagrams (#348)

* fix: correct build script (#358)

* fix: correct build script

* fix: build

* fix: build

* fix: restore missing file

* fix: correct the 'sed' chapter sample file

samples/docs/chapter7.md

@@ -1,6 +1,6 @@
 ---
 title: "Advanced Text Manipulation"
-slug: advanced-text-manipulation
+slug: "advanced-text-manipulation"
 weight: 14
 ---
 

samples/programs/lookup/lookup-v1.py

@@ -1,11 +1,11 @@
 import sys
 
-# Read standard input until there is nothing left to read.
+# Read standard input until nothing is left to read.
 while True:
     # Read a line of input.
     word = sys.stdin.readline()
 
-    # If the user hits 'Ctrl+D' to end transmission, readline returns an
+    # If the user presses Ctrl-D to end transmission, readline returns an
     # empty string and we can stop reading.
     if not word:
         break

samples/programs/lookup/lookup-v2.py

@@ -11,7 +11,7 @@ def search_for_word(word):
     url = "https://api.dictionaryapi.dev/api/v2/entries/en/{}".format(encoded_word)
     command = ["curl", url]
 
-    # Run the 'curl' command to retrieve the definition.
+    # Run the "curl" command to retrieve the definition.
     result = subprocess.run(command,
                             stdout=subprocess.PIPE,
                             stderr=subprocess.PIPE,
@@ -24,19 +24,19 @@ def search_for_word(word):
     # Now try and parse the data.
     data = json.loads(result.stdout)
 
-    # Grab the first 'meaning' value. If it doesn't exist in the response then
+    # Grab the first "meaning" value. If it doesn't exist in the response then
     # the word was not found.
     try:
         return data[0]["meanings"][0]["definitions"][0]["definition"]
     except KeyError:
         return "definition not found!"
 
-# Read standard input until there is nothing left to read.
+# Read standard input until nothing is left to read.
 while True:
     # Read a line of input.
     word = sys.stdin.readline()
 
-    # If the user hits 'Ctrl+D' to end transmission, readline returns an
+    # If the user presses Ctrl-D to end transmission, readline returns an
     # empty string and we can stop reading.
     if not word:
         break

samples/programs/lookup/lookup-v3.py

@@ -24,7 +24,7 @@ def search_for_word(word):
     url = "https://api.dictionaryapi.dev/api/v2/entries/en/{}".format(encoded_word)
     command = ["curl", url]
 
-    # Run the 'curl' command to retrieve the definition.
+    # Run the "curl" command to retrieve the definition.
     result = subprocess.run(command,
                             stdout=subprocess.PIPE,
                             stderr=subprocess.PIPE,
@@ -37,7 +37,7 @@ def search_for_word(word):
     # Now try and parse the data.
     data = json.loads(result.stdout)
 
-    # Grab the first 'meaning' value. If it doesn't exist in the response then
+    # Grab the first "meaning" value. If it doesn't exist in the response then
     # the word was not found.
     try:
         return data[0]["meanings"][0]["definitions"][0]["definition"]
@@ -51,7 +51,7 @@ def write_definition(word, definition):
     # We will separate the word and the definition with a colon and space.
     separator = ": "
 
-    # If the 'crop' argument is set, use it.
+    # If the "crop" argument is set, use it.
     if args.crop:
         output_length = len(word) + len(separator) + len(definition)
         if output_length > args.crop:
@@ -68,12 +68,12 @@ def write_definition(word, definition):
     # Write out the word, separator and definition.
     print(word + separator + definition)
 
-# Read standard input until there is nothing left to read.
+# Read standard input until nothing is left to read.
 while True:
     # Read a line of input.
     word = sys.stdin.readline()
 
-    # If the user hits 'Ctrl+D' to end transmission, readline returns an
+    # If the user presses Ctrl-D to end transmission, readline returns an
     # empty string and we can stop reading.
     if not word:
         break

samples/programs/lookup/lookup.py

@@ -47,7 +47,7 @@ def search_for_word(word):
     url = "https://api.dictionaryapi.dev/api/v2/entries/en/{}".format(encoded_word)
     command = ["curl", url]
 
-    # Run the 'curl' command to retrieve the definition.
+    # Run the "curl" command to retrieve the definition.
     result = subprocess.run(command,
                             stdout=subprocess.PIPE,
                             stderr=subprocess.PIPE,
@@ -60,7 +60,7 @@ def search_for_word(word):
     # Now try and parse the data.
     data = json.loads(result.stdout)
 
-    # Grab the first 'meaning' value. If it doesn't exist in the response then
+    # Grab the first "meaning" value. If it doesn't exist in the response then
     # the word was not found.
     try:
         return data[0]["meanings"][0]["definitions"][0]["definition"]
@@ -74,7 +74,7 @@ def write_definition(word, definition):
     # We will separate the word and the definition with a colon and space.
     separator = ": "
 
-    # If the 'crop' argument is set, use it.
+    # If the "crop" argument is set, use it.
     if args.crop:
         output_length = len(word) + len(separator) + len(definition)
         if output_length > args.crop:
@@ -107,7 +107,7 @@ def read_words():
 
 # Process words until we run out of the provided list or end standard input.
 for word in read_words():
-    # If the user hits 'Ctrl+D' to end transmission, readline returns an
+    # If the user presses Ctrl-D to end transmission, readline returns an
     # empty string and we can stop reading.
     if not word:
         break

samples/scripts/common.sh

@@ -77,7 +77,7 @@ fi
 # to get the most common commands.
 if [[ $shell_binary == "bash" ]]; then
     # Store the most commonly used commands.
-    commands=$(tail "${history_file}" -n ${history_lines} \
+    commands=$(tail -n ${history_lines}" ${history_file}" \
         | sort \
         | uniq -c \
         | sed 's/^ *//' \

samples/scripts/common.v1.sh

@@ -2,4 +2,4 @@
 echo "common commands:"
 
 # Show the most commonly used commands.
-tail ~/.bash_history -n 1000 | sort | uniq -c | sed 's/^ *//' | sort -n -r | head -n 10
+tail -n 1000 ~/.bash_history | sort | uniq -c | sed 's/^ *//' | sort -n -r | head -n 10

samples/scripts/common.v2.sh

@@ -6,7 +6,7 @@ history_lines=1000 # The number of lines of history to search through
 command_count=10   # The number of common commands to show.
 
 # Show the most commonly used commands.
-tail ~/.bash_history -n ${history_lines} \
+tail -n ${history_lines} ~/.bash_history \
     | sort \
     | uniq -c \
     | sed 's/^ *//' \

samples/scripts/common.v3.sh

@@ -23,7 +23,7 @@ fi
 # to get the most common commands.
 if [[ $shell_binary == "bash" ]]; then
     # Show the most commonly used commands.
-    tail "${history_file}" -n ${history_lines} \
+    tail -n ${history_lines} "${history_file}" \
         | sort \
         | uniq -c \
         | sed 's/^ *//' \
@@ -33,7 +33,7 @@ elif [[ $shell_binary == "zsh" ]]; then
     # Each line in the has some extra information at the beginning, the command
     # text only appears after a semi-colon. So extract the text from after the
     # semi-colon and then process it just like in the bash example.
-    tail "${history_file}" -n ${history_lines} \
+    tail -n ${history_lines} "${history_file}" \
         | rev \
         | cut -d';' -f1 \
         | rev \

samples/scripts/common.v4.sh

@@ -23,7 +23,7 @@ fi
 # to get the most common commands.
 if [[ $shell_binary == "bash" ]]; then
     # Store the most commonly used commands.
-    commands=$(tail "${history_file}" -n ${history_lines} \
+    commands=$(tail -n ${history_lines} "${history_file}" \
         | sort \
         | uniq -c \
         | sed 's/^ *//' \
@@ -33,7 +33,7 @@ elif [[ $shell_binary == "zsh" ]]; then
     # Each line in the has some extra information at the beginning, the command
     # text only appears after a semi-colon. So extract the text from after the
     # semi-colon and then process it just like in the bash example.
-    commands=$(tail "${history_file}" -n ${history_lines} \
+    commands=$(tail -n ${history_lines} "${history_file}" \
         | rev \
         | cut -d';' -f1 \
         | rev \

samples/scripts/common.v5.sh

@@ -26,7 +26,7 @@ fi
 # to get the most common commands.
 if [[ $shell_binary == "bash" ]]; then
     # Store the most commonly used commands.
-    commands=$(tail "${history_file}" -n ${history_lines} \
+    commands=$(tail -n ${history_lines} "${history_file}" \
         | sort \
         | uniq -c \
         | sed 's/^ *//' \
@@ -36,7 +36,7 @@ elif [[ $shell_binary == "zsh" ]]; then
     # Each line in the has some extra information at the beginning, the command
     # text only appears after a semi-colon. So extract the text from after the
     # semi-colon and then process it just like in the bash example.
-    commands=$(tail "${history_file}" -n ${history_lines} \
+    commands=$(tail -n ${history_lines} "${history_file}" \
         | rev \
         | cut -d';' -f1 \
         | rev \

samples/scripts/showpstree.sh

@@ -6,7 +6,7 @@ if [ "$(uname)" = "Darwin" ]; then
     # BSD pstree; show for process -p.
     pstree -p $$
 else
-    # GNU pstree; use the long form (-l) show the command line (-a) and the
+    # GNU pstree; the command line (-a) and the
     # details for a specific process (-s).
     pstree -a -s $$
 fi