How to find text in a file in bash and echo the output and add it to a variable












1















I'm trying to make a bash script that needs to find http://0.0.0.0:3468/*in a bunch of logs in /opt/plex/*.log, display it at the terminal for the user and at same time add it to a variable.



How can I do this?



Example : Print http://0.0.0.0:3468/abc to the terminal, and create a variable in the script called TOKEN=abc.






bash shell awk







share|improve this question

























  • @Inian the url is always that. I also want to get everything after /*

    – Freedo
    Oct 16 '17 at 6:51








  • 2





    Can you give some actual examples to come after /* and exactly say what you want to add it to a variable? By showing an example?

    – Inian
    Oct 16 '17 at 6:52











  • @Inian everything after /* is alphanumeric characters, I want to find that in the logs, print it to the user, and create variable TOKEN=/*

    – Freedo
    Oct 16 '17 at 6:54











  • E.g. if you have http://0.0.0.0:3468/abc, you just want to see abc?

    – Inian
    Oct 16 '17 at 6:57











  • @Inian want to print everything, including the url and what comes after /*, but make a variable only with the output after /*

    – Freedo
    Oct 16 '17 at 6:59


















1















I'm trying to make a bash script that needs to find http://0.0.0.0:3468/*in a bunch of logs in /opt/plex/*.log, display it at the terminal for the user and at same time add it to a variable.



How can I do this?



Example : Print http://0.0.0.0:3468/abc to the terminal, and create a variable in the script called TOKEN=abc.






bash shell awk







share|improve this question

























  • @Inian the url is always that. I also want to get everything after /*

    – Freedo
    Oct 16 '17 at 6:51








  • 2





    Can you give some actual examples to come after /* and exactly say what you want to add it to a variable? By showing an example?

    – Inian
    Oct 16 '17 at 6:52











  • @Inian everything after /* is alphanumeric characters, I want to find that in the logs, print it to the user, and create variable TOKEN=/*

    – Freedo
    Oct 16 '17 at 6:54











  • E.g. if you have http://0.0.0.0:3468/abc, you just want to see abc?

    – Inian
    Oct 16 '17 at 6:57











  • @Inian want to print everything, including the url and what comes after /*, but make a variable only with the output after /*

    – Freedo
    Oct 16 '17 at 6:59
















1












1








1








I'm trying to make a bash script that needs to find http://0.0.0.0:3468/*in a bunch of logs in /opt/plex/*.log, display it at the terminal for the user and at same time add it to a variable.



How can I do this?



Example : Print http://0.0.0.0:3468/abc to the terminal, and create a variable in the script called TOKEN=abc.






bash shell awk







share|improve this question
















I'm trying to make a bash script that needs to find http://0.0.0.0:3468/*in a bunch of logs in /opt/plex/*.log, display it at the terminal for the user and at same time add it to a variable.



How can I do this?



Example : Print http://0.0.0.0:3468/abc to the terminal, and create a variable in the script called TOKEN=abc.






bash shell awk




bash shell awk






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited 7 mins ago









Inian

5,3001530




5,3001530










asked Oct 16 '17 at 6:48









FreedoFreedo

450520




450520













  • @Inian the url is always that. I also want to get everything after /*

    – Freedo
    Oct 16 '17 at 6:51








  • 2





    Can you give some actual examples to come after /* and exactly say what you want to add it to a variable? By showing an example?

    – Inian
    Oct 16 '17 at 6:52











  • @Inian everything after /* is alphanumeric characters, I want to find that in the logs, print it to the user, and create variable TOKEN=/*

    – Freedo
    Oct 16 '17 at 6:54











  • E.g. if you have http://0.0.0.0:3468/abc, you just want to see abc?

    – Inian
    Oct 16 '17 at 6:57











  • @Inian want to print everything, including the url and what comes after /*, but make a variable only with the output after /*

    – Freedo
    Oct 16 '17 at 6:59





















  • @Inian the url is always that. I also want to get everything after /*

    – Freedo
    Oct 16 '17 at 6:51








  • 2





    Can you give some actual examples to come after /* and exactly say what you want to add it to a variable? By showing an example?

    – Inian
    Oct 16 '17 at 6:52











  • @Inian everything after /* is alphanumeric characters, I want to find that in the logs, print it to the user, and create variable TOKEN=/*

    – Freedo
    Oct 16 '17 at 6:54











  • E.g. if you have http://0.0.0.0:3468/abc, you just want to see abc?

    – Inian
    Oct 16 '17 at 6:57











  • @Inian want to print everything, including the url and what comes after /*, but make a variable only with the output after /*

    – Freedo
    Oct 16 '17 at 6:59



















@Inian the url is always that. I also want to get everything after /*

– Freedo
Oct 16 '17 at 6:51







@Inian the url is always that. I also want to get everything after /*

– Freedo
Oct 16 '17 at 6:51






2




2





Can you give some actual examples to come after /* and exactly say what you want to add it to a variable? By showing an example?

– Inian
Oct 16 '17 at 6:52





Can you give some actual examples to come after /* and exactly say what you want to add it to a variable? By showing an example?

– Inian
Oct 16 '17 at 6:52













@Inian everything after /* is alphanumeric characters, I want to find that in the logs, print it to the user, and create variable TOKEN=/*

– Freedo
Oct 16 '17 at 6:54





@Inian everything after /* is alphanumeric characters, I want to find that in the logs, print it to the user, and create variable TOKEN=/*

– Freedo
Oct 16 '17 at 6:54













E.g. if you have http://0.0.0.0:3468/abc, you just want to see abc?

– Inian
Oct 16 '17 at 6:57





E.g. if you have http://0.0.0.0:3468/abc, you just want to see abc?

– Inian
Oct 16 '17 at 6:57













@Inian want to print everything, including the url and what comes after /*, but make a variable only with the output after /*

– Freedo
Oct 16 '17 at 6:59







@Inian want to print everything, including the url and what comes after /*, but make a variable only with the output after /*

– Freedo
Oct 16 '17 at 6:59












1 Answer
1






active

oldest

votes


















2














Based on supposed requirements from the comments, you need something like below



#!/usr/bin/env bash



token=()

while IFS= read -r line; do

    printf '%sn' "$line"

    token+=( "${line##*/}" )

done< <(awk '$0 ~ "http://0.0.0.0:3468/"' /opt/plex/*.log)


This will print all the matching lines containing the URL to the console. Instead of using a variable to store the token output you can use an array in bash to append the contents after / by using parameter expansion syntax of type ${word##*} which removes the string up to the last occurrence of / and prints the remaining string. So once your script is completed, you can print the token list as just



printf '%sn' "${token[@]}"


and access the individual token by looping over the array



for ((i=0; i< ${#token[@]}; i++ )); do 

    printf '%sn' "${token[i]}"

done


(or) as just using array indices ${token[0]}, ${token[1]} etc.




If your requirement just boils down to get a single string value from the multiple set of files, just use grep or Awk as



token=$(awk -vFS=/ '$0 ~ "http://0.0.0.0:3468/"{print $NF}' /opt/plex_autoscan/*.log)


(or) with GNU grep as



token=$(grep -oP 'http://0.0.0.0:3468/K.*) /opt/plex_autoscan/*.log





share|improve this answer


























  • Let us continue this discussion in chat.

    – Freedo
    Oct 16 '17 at 7:35












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1 Answer
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1 Answer
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oldest

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active

oldest

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active

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2














Based on supposed requirements from the comments, you need something like below



#!/usr/bin/env bash



token=()

while IFS= read -r line; do

    printf '%sn' "$line"

    token+=( "${line##*/}" )

done< <(awk '$0 ~ "http://0.0.0.0:3468/"' /opt/plex/*.log)


This will print all the matching lines containing the URL to the console. Instead of using a variable to store the token output you can use an array in bash to append the contents after / by using parameter expansion syntax of type ${word##*} which removes the string up to the last occurrence of / and prints the remaining string. So once your script is completed, you can print the token list as just



printf '%sn' "${token[@]}"


and access the individual token by looping over the array



for ((i=0; i< ${#token[@]}; i++ )); do 

    printf '%sn' "${token[i]}"

done


(or) as just using array indices ${token[0]}, ${token[1]} etc.




If your requirement just boils down to get a single string value from the multiple set of files, just use grep or Awk as



token=$(awk -vFS=/ '$0 ~ "http://0.0.0.0:3468/"{print $NF}' /opt/plex_autoscan/*.log)


(or) with GNU grep as



token=$(grep -oP 'http://0.0.0.0:3468/K.*) /opt/plex_autoscan/*.log





share|improve this answer


























  • Let us continue this discussion in chat.

    – Freedo
    Oct 16 '17 at 7:35
















2














Based on supposed requirements from the comments, you need something like below



#!/usr/bin/env bash



token=()

while IFS= read -r line; do

    printf '%sn' "$line"

    token+=( "${line##*/}" )

done< <(awk '$0 ~ "http://0.0.0.0:3468/"' /opt/plex/*.log)


This will print all the matching lines containing the URL to the console. Instead of using a variable to store the token output you can use an array in bash to append the contents after / by using parameter expansion syntax of type ${word##*} which removes the string up to the last occurrence of / and prints the remaining string. So once your script is completed, you can print the token list as just



printf '%sn' "${token[@]}"


and access the individual token by looping over the array



for ((i=0; i< ${#token[@]}; i++ )); do 

    printf '%sn' "${token[i]}"

done


(or) as just using array indices ${token[0]}, ${token[1]} etc.




If your requirement just boils down to get a single string value from the multiple set of files, just use grep or Awk as



token=$(awk -vFS=/ '$0 ~ "http://0.0.0.0:3468/"{print $NF}' /opt/plex_autoscan/*.log)


(or) with GNU grep as



token=$(grep -oP 'http://0.0.0.0:3468/K.*) /opt/plex_autoscan/*.log





share|improve this answer


























  • Let us continue this discussion in chat.

    – Freedo
    Oct 16 '17 at 7:35














2












2








2







Based on supposed requirements from the comments, you need something like below



#!/usr/bin/env bash



token=()

while IFS= read -r line; do

    printf '%sn' "$line"

    token+=( "${line##*/}" )

done< <(awk '$0 ~ "http://0.0.0.0:3468/"' /opt/plex/*.log)


This will print all the matching lines containing the URL to the console. Instead of using a variable to store the token output you can use an array in bash to append the contents after / by using parameter expansion syntax of type ${word##*} which removes the string up to the last occurrence of / and prints the remaining string. So once your script is completed, you can print the token list as just



printf '%sn' "${token[@]}"


and access the individual token by looping over the array



for ((i=0; i< ${#token[@]}; i++ )); do 

    printf '%sn' "${token[i]}"

done


(or) as just using array indices ${token[0]}, ${token[1]} etc.




If your requirement just boils down to get a single string value from the multiple set of files, just use grep or Awk as



token=$(awk -vFS=/ '$0 ~ "http://0.0.0.0:3468/"{print $NF}' /opt/plex_autoscan/*.log)


(or) with GNU grep as



token=$(grep -oP 'http://0.0.0.0:3468/K.*) /opt/plex_autoscan/*.log





share|improve this answer















Based on supposed requirements from the comments, you need something like below



#!/usr/bin/env bash



token=()

while IFS= read -r line; do

    printf '%sn' "$line"

    token+=( "${line##*/}" )

done< <(awk '$0 ~ "http://0.0.0.0:3468/"' /opt/plex/*.log)


This will print all the matching lines containing the URL to the console. Instead of using a variable to store the token output you can use an array in bash to append the contents after / by using parameter expansion syntax of type ${word##*} which removes the string up to the last occurrence of / and prints the remaining string. So once your script is completed, you can print the token list as just



printf '%sn' "${token[@]}"


and access the individual token by looping over the array



for ((i=0; i< ${#token[@]}; i++ )); do 

    printf '%sn' "${token[i]}"

done


(or) as just using array indices ${token[0]}, ${token[1]} etc.




If your requirement just boils down to get a single string value from the multiple set of files, just use grep or Awk as



token=$(awk -vFS=/ '$0 ~ "http://0.0.0.0:3468/"{print $NF}' /opt/plex_autoscan/*.log)


(or) with GNU grep as



token=$(grep -oP 'http://0.0.0.0:3468/K.*) /opt/plex_autoscan/*.log






share|improve this answer














share|improve this answer



share|improve this answer








edited Oct 16 '17 at 7:54

























answered Oct 16 '17 at 7:05









InianInian

5,3001530




5,3001530













  • Let us continue this discussion in chat.

    – Freedo
    Oct 16 '17 at 7:35



















  • Let us continue this discussion in chat.

    – Freedo
    Oct 16 '17 at 7:35

















Let us continue this discussion in chat.

– Freedo
Oct 16 '17 at 7:35





Let us continue this discussion in chat.

– Freedo
Oct 16 '17 at 7:35


















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