Autosave: 2024-11-17 12:01:24

neuron/7d6ebca6-4ae5-4451-bb1d-beee6c92ebad/Bash_colour_output.md

@@ -0,0 +1,24 @@
+---
+tags: [shell]
+created: Sunday, November 17, 2024
+---
+
+# Bash colour output'
+
+Define colours:
+
+```sh
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+BLUE='\033[0;34m'
+NO_COLOR='\033[0m'
+```
+
+Interpolate in string:
+
+```sh
+echo -e "${BLUE}INFO Uploading graph file...${NO_COLOR}"
+```
+
+Note: must end with the blank colour otherwise everything subsequent will be in
+blue.

neuron/7d6ebca6-4ae5-4451-bb1d-beee6c92ebad/Bash_file_exists.md

@@ -0,0 +1,14 @@
+---
+tags: [shell]
+created: Sunday, November 17, 2024
+---
+
+# Bash file exists
+
+```sh
+FILE_PATH="$PWD/foo/bar.json"
+if [ ! -f "$FILE_PATH" ]; then
+	echo -e "ERROR Graph file ( $FILE_PATH ) does not exist. Exiting."
+	exit 0
+fi
+```

neuron/7d6ebca6-4ae5-4451-bb1d-beee6c92ebad/Bash_store_status_of_command_execution.md

@@ -0,0 +1,22 @@
+---
+tags: [shell, AWS, S3]
+created: Sunday, November 17, 2024
+---
+
+# Bash store status of command execution
+
+We can store the outcome of a command in a variable, then check this variable to
+derive the status and then provide custom outputs or other branching logic.
+
+Here is an example of adding an object to a bucket in S3:
+
+```sh
+aws s3api put-object --bucket "${BUCKET_NAME}" --key "${FILE}" --body "${FILE_PATH}" >/dev/null 2>&1
+STATUS=$?
+
+if [ $STATUS -eq 0 ]; then
+	echo -e "SUCCESS File uploaded."
+else
+	echo -e "Upload failed with status $STATUS."
+fi
+```

neuron/7d6ebca6-4ae5-4451-bb1d-beee6c92ebad/Terraform.md

@@ -73,3 +73,12 @@ Typically when you want to do a clean recreate.
 ```
 terraform destoy
 ```
+
+## Run with debug/logger
+
+```
+TF_LOG=DEBUG terraform apply
+```
+
+Or use with other Terraform command, e.g. `destroy`, `refresh` - whatever is
+causing the problem.

neuron/7d6ebca6-4ae5-4451-bb1d-beee6c92ebad/index.md

@@ -13,12 +13,15 @@ computer science.
 
 ![not-by-ai-badge](static/not-by-ai-alternative--light.svg)
  
-**Build ID:** f2b582e1-cb67-4c06-b6ad-a3e7d0a4f307
+**Build ID:** 7d6ebca6-4ae5-4451-bb1d-beee6c92ebad
 
-**Published:** Sat 16 Nov 2024 16:29:25
+**Published:** Sun 17 Nov 2024 12:01:22
 
 ### Recent edits 
 
+- [[Bash_store_status_of_command_execution]] 
+- [[Bash_colour_output]] 
+- [[Bash_file_exists]] 
 - [[Terraform]] 
 - [[Classes_in_Python]] 
 - [[Dictionaries_in_Python]] 
@@ -28,12 +31,9 @@ computer science.
 - [[Usenet]] 
 - [[Batch_processing]] 
 - [[0716531c_rewilding_the_internet]] 
-- [[f6564af9_AOL_and_early_internet_enclosure]] 
-- [[241fe1a3_the_Web_versus_modem_BBSs]] 
-- [[Weaving_the_Web_Berners_Lee]] 
 
 
-### All notes (491) 
+### All notes (494) 
 
 - [[0716531c_rewilding_the_internet]] 
 - [[241fe1a3_the_Web_versus_modem_BBSs]] 
@@ -72,6 +72,9 @@ computer science.
 - [[Atomic_and_molecular_propositions]] 
 - [[Awk]] 
 - [[Axioms_of_set_theory]] 
+- [[Bash_colour_output]] 
+- [[Bash_file_exists]] 
+- [[Bash_store_status_of_command_execution]] 
 - [[Basic_model_of_the_operating_system]] 
 - [[Basic_properties_of_sets]] 
 - [[Basics_of_web_components]] 

zk/Bash_colour_output.md

@@ -0,0 +1,24 @@
+---
+tags: [shell]
+created: Sunday, November 17, 2024
+---
+
+# Bash colour output'
+
+Define colours:
+
+```sh
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+BLUE='\033[0;34m'
+NO_COLOR='\033[0m'
+```
+
+Interpolate in string:
+
+```sh
+echo -e "${BLUE}INFO Uploading graph file...${NO_COLOR}"
+```
+
+Note: must end with the blank colour otherwise everything subsequent will be in
+blue.

zk/Bash_file_exists.md

@@ -0,0 +1,14 @@
+---
+tags: [shell]
+created: Sunday, November 17, 2024
+---
+
+# Bash file exists
+
+```sh
+FILE_PATH="$PWD/foo/bar.json"
+if [ ! -f "$FILE_PATH" ]; then
+	echo -e "ERROR Graph file ( $FILE_PATH ) does not exist. Exiting."
+	exit 0
+fi
+```

zk/Bash_store_status_of_command_execution.md

@@ -0,0 +1,22 @@
+---
+tags: [shell, AWS, S3]
+created: Sunday, November 17, 2024
+---
+
+# Bash store status of command execution
+
+We can store the outcome of a command in a variable, then check this variable to
+derive the status and then provide custom outputs or other branching logic.
+
+Here is an example of adding an object to a bucket in S3:
+
+```sh
+aws s3api put-object --bucket "${BUCKET_NAME}" --key "${FILE}" --body "${FILE_PATH}" >/dev/null 2>&1
+STATUS=$?
+
+if [ $STATUS -eq 0 ]; then
+	echo -e "SUCCESS File uploaded."
+else
+	echo -e "Upload failed with status $STATUS."
+fi
+```

zk/Terraform.md

@@ -73,3 +73,12 @@ Typically when you want to do a clean recreate.
 ```
 terraform destoy
 ```
+
+## Run with debug/logger
+
+```
+TF_LOG=DEBUG terraform apply
+```
+
+Or use with other Terraform command, e.g. `destroy`, `refresh` - whatever is
+causing the problem.