upg.sh my dump.txt to note.md

SYNOPSIS: upg.sh

Upgrade your system and store stdout into a markdown file.

#!/bin/bash

# upg.sh

FILENAME=sys-upgrade$(date +%m-%d-%Y).md

DIRECTORY="${HOME}/Documents/"

# step 1: formatting.

echo -e "# **System Upgrade:** $(date)n"

| tee -a ${DIRECTORY}${FILENAME}

echo -e "**Command:** `sudo apt-get update; sudo apt-get upgrade --yes`n"

| tee -a ${DIRECTORY}${FILENAME}

echo -e "**Command Breakdown:**"

| tee -a ${DIRECTORY}${FILENAME}

echo -e "- `sudo`, Admin Privilages."

| tee -a ${DIRECTORY}${FILENAME}

echo -e "- `apt-get`, Package Manager."

| tee -a ${DIRECTORY}${FILENAME}

echo -e "- `update;`, Package Manager's task; update the system software repositories."

| tee -a ${DIRECTORY}${FILENAME}

echo -e "- `sudo apt-get upgrade`, Perform system upgrade with updated repositories."

| tee -a ${DIRECTORY}${FILENAME}

echo -e "- `--yes`, Answers yes to the prompt."

| tee -a ${DIRECTORY}${FILENAME}

# step 2: run commands with formatting.

echo -e "n**Command std-output:**n"

| tee -a ${DIRECTORY}${FILENAME}

echo -e "```"

| tee -a ${DIRECTORY}${FILENAME}

echo $(date)

| tee -a ${DIRECTORY}${FILENAME}

sudo apt-get update

| tee -a ${DIRECTORY}${FILENAME}

echo -e "n# System update completed.n"

| tee -a ${DIRECTORY}${FILENAME}

sudo apt-get upgrade --yes

| tee -a ${DIRECTORY}${FILENAME}

echo -e "n# System upgrade completed.n"

| tee -a ${DIRECTORY}${FILENAME}

echo -e "```n"

| tee -a ${DIRECTORY}${FILENAME}

# step 3: additional details with more formatting.

echo -e "**Upgraded Package Details:**n"

| tee -a ${DIRECTORY}${FILENAME}

echo -e "```"

| tee -a ${DIRECTORY}${FILENAME}

PKGLIST=$(sed -n "/The following packages will be upgraded:/,/^.. upgraded/p" ${FILENAME}

| sed '1d;$d' | xargs -n 1 | sed '/:i386$/d')

PKGCACHE=$(echo -e "${PKGLIST}n"

| xargs -n1 -I _ apt-cache search _)

echo "${PKGCACHE}" > ${DIRECTORY}delete.txt

echo "${PKGLIST}"

| xargs -n 1 -I _ echo "sed -n '/^_ /p'" "${DIRECTORY}delete.txt"

| bash | tee -a ${DIRECTORY}${FILENAME};

echo -e "```"

| tee -a ${DIRECTORY}${FILENAME}

rm -v ${DIRECTORY}delete.txt;

PKGLIST=

PKGCACHE=

# step 4: place EOF (end of file).

sed -i '/EOF/d' ${DIRECTORY}${FILENAME}

echo "EOF" >> ${DIRECTORY}${FILENAME}

#EOF

Script breakdown: upg.sh

First, we declare bash as our shell with #!/bin/bash. We could also use #!/bin/sh for a more portable script.

I like to paste the name of the script we're working on into the script itself # upg.sh.

Setup a couple of variables to shorten the syntax.

FILENAME=sys-upgrade$(date +%m-%d-%Y).md

DIRECTORY="${HOME}/Documents/"

# step 1: formatting.

Build labels and a short breakdown of the update/upgrade commands used.

echo -e "# **System Upgrade:** $(date)n" <-- formatting: label with date.

| tee -a ${DIRECTORY}${FILENAME} <-- path/to/file

echo -e "**Command:** `sudo apt-get update; sudo apt-get upgrade --yes`n" <-- formatting: command label.

| tee -a ${DIRECTORY}${FILENAME}