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CLI interface to explainshell.com
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| #!/usr/bin/env sh | |
| # | |
| # Explain a given shell command using explanation from explainshell.com | |
| # | |
| # Usage: explainshell <command> | |
| # | |
| # Credit: Derived from https://github.com/benjamine/explain.sh | |
| # License: MIT | |
| URL="$*" | |
| for prereq in curl lynx sed xmllint; do | |
| which "$prereq" >/dev/null 2>&1 | |
| if [ $? -ne 0 ]; then | |
| echo "ERROR: \`${prereq}\` is not available in your current \$PATH; install the application before using this tool" > /dev/stderr | |
| exit 1 | |
| fi | |
| done | |
| if [ -z "$URL" ]; then | |
| echo "Usage: explainshell.sh <command>" | |
| exit | |
| fi | |
| # lame url encoding | |
| URL=$(echo "$URL" | sed -e 's/%/%25/g') | |
| URL=$(echo "$URL" | sed -e 's/ /%20/g') | |
| URL=$(echo "$URL" | sed -e 's/!/%21/g') | |
| URL=$(echo "$URL" | sed -e 's/"/%22/g') | |
| URL=$(echo "$URL" | sed -e 's/#/%23/g') | |
| URL=$(echo "$URL" | sed -e 's/\$/%24/g') | |
| URL=$(echo "$URL" | sed -e 's/\&/%26/g') | |
| URL=$(echo "$URL" | sed -e 's/'\''/%27/g') | |
| URL=$(echo "$URL" | sed -e 's/'\('/%28/g') | |
| URL=$(echo "$URL" | sed -e 's/'\)'/%29/g') | |
| URL=$(echo "$URL" | sed -e 's/\*/%2a/g') | |
| URL=$(echo "$URL" | sed -e 's/+/%2b/g') | |
| URL=$(echo "$URL" | sed -e 's/,/%2c/g') | |
| URL=$(echo "$URL" | sed -e 's/-/%2d/g') | |
| URL=$(echo "$URL" | sed -e 's/\./%2e/g') | |
| URL=$(echo "$URL" | sed -e 's/\//%2f/g') | |
| URL=$(echo "$URL" | sed -e 's/:/%3a/g') | |
| URL=$(echo "$URL" | sed -e 's/;/%3b/g') | |
| URL=$(echo "$URL" | sed -e 's/>/%3e/g') | |
| URL=$(echo "$URL" | sed -e 's/?/%3f/g') | |
| URL=$(echo "$URL" | sed -e 's/@/%40/g') | |
| URL=$(echo "$URL" | sed -e 's/\[/%5b/g') | |
| URL=$(echo "$URL" | sed -e 's/\\/%5c/g') | |
| URL=$(echo "$URL" | sed -e 's/\]/%5d/g') | |
| URL=$(echo "$URL" | sed -e 's/\^/%5e/g') | |
| URL=$(echo "$URL" | sed -e 's/_/%5f/g') | |
| URL=$(echo "$URL" | sed -e 's/`/%60/g') | |
| URL=$(echo "$URL" | sed -e 's/{/%7b/g') | |
| URL=$(echo "$URL" | sed -e 's/|/%7c/g') | |
| URL=$(echo "$URL" | sed -e 's/}/%7d/g') | |
| URL=$(echo "$URL" | sed -e 's/~/%7e/g') | |
| URL="https://www.explainshell.com/explain?cmd=${URL}" | |
| table_blob=$(curl "$URL" 2>/dev/null | xmllint --html --xpath "//table[@id=\"help\"]" /dev/stdin 2>/dev/null) | |
| html_blob='<html><body>'"${table_blob}"'</body></html>' | |
| echo "$html_blob" | lynx --stdin --dump | sed 's/^ //g' |
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