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23 lines
779 B
Bash
Executable File
23 lines
779 B
Bash
Executable File
#!/bin/bash
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# Deletes certain lines of ~/.ssh/known_hosts
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if [ $# -eq 0 ]; then
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echo "Usage: ./delete_certain_known_hosts 3 5 7 23"
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echo "Will catch duplicate line numbers"
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exit 1
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fi
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known_hosts_path=~/.ssh/known_hosts
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lines_in_known_hosts=$(wc -l "$known_hosts_path" | awk '{print $1}')
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IFS=' '
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deduped_args=$(echo "$@" | xargs -n1 | sort -nu | xargs)
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read -r -a delete_these_lines <<< "$deduped_args"
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lines_to_delete=""
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for var in "${delete_these_lines[@]}"; do
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if [[ "$var" -gt "$lines_in_known_hosts" ]]; then
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echo "$var isnt valid line in $lines_in_known_hosts line $known_hosts_path"
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else
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lines_to_delete+="${var}d;"
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fi
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done
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sed -i "$lines_to_delete" "$known_hosts_path"
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echo "Deleted lines $(echo $(echo $lines_to_delete | sed 's/d;/, /g') | sed 's/.$//' )"
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