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POBash does not continue execution
 

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  1. POBash does not continue execution
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    <p>I am parsing the result of an extracted string. My problem is the execution stops after the first element was processed. </p> <p>Here is my code:</p> <pre><code>#!/bin/bash SCAN_RESULT=$(arp-scan --ignoredups --interface=$1 --localnet) HEADER_REMOVED=$(echo "$SCAN_RESULT" | sed '1,2d') NO_HEADER_LINE_COUNT=$(echo "$HEADER_REMOVED" | wc -l) CAPTURED_DEVICE_INFO=$(echo "$HEADER_REMOVED" | sed $(expr $NO_HEADER_LINE_COUNT - 2),"$NO_HEADER_LINE_COUNT"d) DATA=$(echo "$CAPTURED_DEVICE_INFO" | sed 's/[\t]/;/g') DATA_LINE_COUNT=$(echo "$DATA" | wc -l) echo -n '[' for ((i=0; i&lt;$DATA_LINE_COUNT; i++)) # stops execution after 1st cycle do EXTRACTED_DATA=$(echo "$DATA" | sed $(expr "$i" + 1)'!d') echo -n '{' COMMA_INNER='' for i in {1..3} do echo -n "$COMMA_INNER" case $i in 1) echo -n '"ip":' ;; 2) echo -n '"mac":' ;; 3) echo -n '"manufacturer":' ;; esac echo -n '"' echo -n $(echo $EXTRACTED_DATA | cut -d ';' -f$i) echo -n '"' COMMA_INNER=',' done echo -n '}' done echo -n ']' </code></pre> <p>This is the output string from the arp-scan:</p> <pre><code>Interface: eth0, datalink type: EN10MB (Ethernet) Starting arp-scan 1.8.1 with 16 hosts (http://www.nta-monitor.com/tools/arp-scan/) 192.168.0.1 20:aa:4b:c0:22:78 (Unknown) 192.168.0.5 48:5b:39:a0:60:ba ASUSTek COMPUTER INC. 192.168.0.7 04:7d:7b:7d:c4:e9 (Unknown) 5 packets received by filter, 0 packets dropped by kernel Ending arp-scan 1.8.1: 16 hosts scanned in 0.819 seconds (19.54 hosts/sec). 3 responded </code></pre> <p>This is the string(from arp-scan) I would like to be processed and echoed as JSON</p> <pre><code>192.168.0.1 20:aa:4b:c0:22:78 (Unknown) 192.168.0.5 48:5b:39:a0:60:ba ASUSTek COMPUTER INC. 192.168.0.7 04:7d:7b:7d:c4:e9 (Unknown) </code></pre> <p>Here is the sample output:</p> <pre><code>[{"ip":"192.168.0.1","mac":"20:aa:4b:c0:22:78","manufacturer":"(Unknown)"}] </code></pre> <p>Am I doing it wrong?</p>
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    1. PO
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    1. This table or related slice is empty.
    1. PTQuestion
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    1. USltlynx
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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    2. PO
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    3. PO
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    1. VO
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      1. POBash does not continue execution
      1. This table or related slice is empty.
      1. VTUpMod
    1. COI don't know sed, but I think you can do this a lot easier with awk
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      1. POBash does not continue execution
      1. USMillie Smith
    2. COThis would be much easier in a language like Python, Perl, Ruby, or something with a proper JSON library.
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      1. POBash does not continue execution
      1. USchepner
 

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