b140d4d82a
- 313 new markdown files created - 30 relationships embedded - 313 entries indexed - State initialized with usage data
67 lines
1.7 KiB
Markdown
67 lines
1.7 KiB
Markdown
---
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id: fae8f322-d5c6-4ffb-9735-49e9f46940e8
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type: solution
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title: "Pi-hole v6 TOML update approach using pure shell/sed/awk"
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tags: [pihole, v6, toml, shell, sed, awk, solution]
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importance: 0.6
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confidence: 0.8
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created: "2026-02-07T15:12:33.508157+00:00"
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updated: "2026-02-07T15:12:33.508157+00:00"
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relations:
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- target: dc3ed16c-18db-4011-b866-3730316cd68d
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type: SOLVES
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direction: outgoing
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strength: 0.5
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---
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## Approach for updating Pi-hole v6 pihole.toml without python/perl
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**Constraint:** Pi-hole container only has sh, sed, awk, grep
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**Method 1: Extract-Replace-Merge**
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1. Extract everything before 'hosts = [' line
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2. Write new hosts array
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3. Extract everything after matching ']'
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4. Concatenate all parts
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**Shell commands:**
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# Before hosts array
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sed -n '1,/^[[:space:]]*hosts[[:space:]]*=/p' pihole.toml | head -n -1 > part1.toml
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# New hosts array
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cat >> part1.toml <<EOF
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hosts = [
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"10.10.0.16 domain1.com",
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"10.10.0.16 domain2.com"
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]
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EOF
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# After hosts array (skip until first ] after hosts =)
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awk '/^[[:space:]]*hosts[[:space:]]*=/,/\]/ {found=1; next} found {print}' pihole.toml >> part1.toml
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# Replace original
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mv part1.toml pihole.toml
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**Method 2: Line-by-line state machine with awk**
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awk '
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BEGIN { in_hosts=0; done=0 }
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/^[[:space:]]*hosts[[:space:]]*=/ && !done {
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print " hosts = ["
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print " \"10.10.0.16 domain1.com\","
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print " \"10.10.0.16 domain2.com\""
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print " ]"
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in_hosts=1
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done=1
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next
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}
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in_hosts && /\]/ { in_hosts=0; next }
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!in_hosts { print }
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' pihole.toml
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**Implementation in script:**
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- Build TOML_HOSTS variable with proper escaping
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- Inject into awk/sed command
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- Execute via docker exec pihole sh -c
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**Test first on primary, then secondary**
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