CODEWITHSUNDEEP
bashshellsed
Pedro Montoto García
Pedro Montoto García

Reputation: 1712

Get list of IP from line

I get inputs of the form <an arbitrary number of words> <a list of ip addresses comma separated> <timestamp>.

I tried to get ip_list=$(echo $i | sed 's/\([0-9\.,]\)+/\1/'), where $i is a line on the previously described form, but that matches the whole line for some reason.

The list of IPs does not have spaces in the middle, just commas.

I would like to get the ip list (as a block) and the timestamp in two bash variables.

Example input

asdf asaskf a aghjjsdf 127.0.0.1,10.0.1.1,8.8.8.8,124.125.163.124 2013-11-22 08:38:12

Output

ip_variable="127.0.0.1,10.0.1.1,8.8.8.8,124.125.163.124"
date_variable="2013-11-22 08:38:12"

Upvotes: 0

Views: 107

Answers (3)

anubhava
anubhava

Reputation: 786091

This is much easier with grep -P (PCRE):

> s='asdf asaskf a aghjjsdf 127.0.0.1,10.0.1.1,8.8.8.8,124.125.163.124 2013-11-22 08:38:12'
> arr=( $(echo "$s"| grep -oP '(\d+\.){3}\d') )
> set | grep arr
arr=([0]="127.0.0.1" [1]="10.0.1.1" [2]="8.8.8.8" [3]="124.125.163.1")

> ts=$(echo "$s"| grep -oP '\d{4}-\d{1,2}-\d{1,2} .*')
> echo "$ts"
2013-11-22 08:38:12

Upvotes: 0

NeronLeVelu
NeronLeVelu

Reputation: 10039

echo "${i}" | sed 's/^.*[[:blank:]]\(\(\([012][0-9]\{1,2\}.\)\{3\}[012][0-9]\{1,2\}[.[:blank:]]\)\{1,\}\)[[:blank:]]*\(.*\)$/\1 \4/' | read ip_variable date_variable

failed if ip are not separate only by ,

Upvotes: 0

iruvar
iruvar

Reputation: 23394

Using (under default IFS)

read -a arr <<<'asdf asaskf a aghjjsdf 127.0.0.1,10.0.1.1,8.8.8.8,124.125.163.124 2013-11-22 08:38:12'
ip_variable="${arr[-3]}"
echo $ip_variable
127.0.0.1,10.0.1.1,8.8.8.8,124.125.163.124
date_variable="${arr[*]:(-2)}"
echo $date_variable
2013-11-22 08:38:12

Upvotes: 3

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