1 | #!/bin/bash
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2 |
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3 | # This script will echo the IPv4 of this unix machine. E.g. 100.200.300.45
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4 | # If passed -format-for-tomcat-context, it will echo the same with a pipe
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5 | # symbol up front and all the . escaped with a "\". E.g. "|100\.200\.300\.45"
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6 |
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7 | #http://www.wikihow.com/Find-Your-IP-Address-on-a-Mac#Finding_Your_Internal_IP_Using_the_Terminal_sub
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8 | #http://stackoverflow.com/questions/1469849/how-to-split-one-string-into-multiple-strings-in-bash-shell
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9 | #http://www.linuxforums.org/forum/red-hat-fedora-linux/193076-ifconfig-doesnt-display-ipv4-address.html
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10 |
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11 |
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12 | # The following echoes the IPv4, e.g. 100.200.300.45
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13 | # But need to still replace the . with \.
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14 |
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15 | #echo `ifconfig eth0 | grep "inet " | grep -v 127.0.0.1`|cut -d' ' -f 2|cut -d':' -f 2
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16 |
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17 | tmp=`ifconfig eth0 2>&1 | grep "inet " | grep -v 127.0.0.1`
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18 | # As below: if $tmp is empty, can just return |, as that doesn't really matter. Will be consistent with windows
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19 | if [[ $tmp = *"Device not found"* ]] || [[ -z "${tmp// }" ]]; then
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20 | # eth0 is not found on Kathy's machine where the default ethernet device has a different name
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21 | # But ifconfig on its own works there, so try that next
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22 | tmp=`ifconfig 2>&1 | grep "inet " | grep -v 127.0.0.1`
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23 | if [[ $tmp = *"Device not found"* ]] || [[ -z "${tmp// }" ]]; then
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24 | echo "|"
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25 | fi
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26 | fi
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27 |
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28 | # grab just the portion of the line we want
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29 | tmp=`echo $tmp|cut -d' ' -f 2|cut -d':' -f 2`
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30 |
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31 | # if requested to format the IPv4 for the solr.xml tomcat context file
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32 | if [ "$1" == "-format-for-tomcat-context" ]; then
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33 |
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34 | #http://stackoverflow.com/questions/13210880/replace-one-substring-for-another-string-in-shell-script
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35 | #${original_string//searchterm/$string_to_replace_searchterm_with}
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36 | replace="."
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37 | replacement="\."
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38 |
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39 | tmp=${tmp//$replace/$replacement}
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40 |
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41 | # next, if the tmp variable is not the empty string, prefix the | operator
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42 | # http://unix.stackexchange.com/questions/146942/how-can-i-test-if-a-variable-is-empty-or-contains-only-spaces
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43 | # Can just return | if $tmp is empty, as that doesn't really matter. Will be consistent with windows
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44 | if [[ ! -z "${tmp// }" ]]; then
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45 | tmp="|$tmp"
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46 | else
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47 | tmp="|"
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48 | fi
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49 |
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50 | fi
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51 |
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52 | echo $tmp
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53 |
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