How to add variable text in different files using for loop in bash script

Question

I'm trying to add some text to the end of a few files. I have made a file, where I have 5 servername. Each servername corresponds to a separate config file. (The path of these config files is not known).

I am using below code to get the file path,

MyCode:

#!/bin/bash
for i in $(cat serverlist-file | while read f; do find . -name "*$f*"; done);
do
echo $i
done

Output:

/data/servers/customer01/server01.cfg
/data/servers/customer01/server02.cfg
/data/servers/customer02/server03.cfg
/data/servers/customer03/server04.cfg
/data/servers/customer03/server05.cfg

I am using below code to get the list of servers,

MyCode:

#!/bin/bash
for j in $(cat serverlist-file);
do
echo $j
done

Output:

server01
server02
server03
server04
server05

Now I want to edit those config files and add text to it.

I am using below code to add the required text:

#!/bin/bash
for i in $(cat serverlist-file | while read f; do find . -name "*$f*"; done);
do
for j in $(cat serverlist-file);
do 
sed -i -e "\$a\
this\ is\ a\ config\ file\nfor\ $j" $i
done
done

Expected Output:

/data/servers/customer01/server01.cfg
this is a config file
for server01
/data/servers/customer01/server02.cfg
this is a config file
for server02
/data/servers/customer02/server03.cfg
this is a config file
for server03
/data/servers/customer03/server04.cfg
this is a config file
for server04
/data/servers/customer03/server05.cfg
this is a config file
for server05

Edit for a reply to @ShawnMilo:

I am trying to bulk add some config to some nagios config files, but not to all server config files.

So, searching with find . -name '*.config' isn't going to work, because then all the config files will get edited. I only want specific files to get edited, just the servers from the serverlist-file.

Nagios configs need to have the hostname of the server in them, like:

define service {
use                             generic-service
host_name                       server01
service_description             SSH
contact_groups                   linux
check_command                check_something
}

ShawnMilo · Accepted Answer · 2020-10-29 21:39:31Z

1

Seems like an odd requirement. What are you actually trying to do?

In any case, this will do what was requested:

$ find . -name '*.config' | while read x; do echo $x; cat $x; echo; done
./data/servers/customer02/server03.config
default stuff here

./data/servers/customer03/server05.config
default stuff here

./data/servers/customer03/server04.config
default stuff here

./data/servers/customer01/server01.config
default stuff here

./data/servers/customer01/server02.config
default stuff here

$ find . -name '*.config' | while read x; do name=$(basename $x); echo -e "this is a config file\nfor ${name%%.*}" >> $x; done

$ find . -name '*.config' | while read x; do echo $x; cat $x; echo; done
./data/servers/customer02/server03.config
default stuff here
this is a config file
for server03

./data/servers/customer03/server05.config
default stuff here
this is a config file
for server05

./data/servers/customer03/server04.config
default stuff here
this is a config file
for server04

./data/servers/customer01/server01.config
default stuff here
this is a config file
for server01

./data/servers/customer01/server02.config
default stuff here
this is a config file
for server02

answered Oct 29, 2020 at 21:39

ShawnMilo

6,2353 gold badges21 silver badges15 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

ShawnMilo Over a year ago

You can use the same find command to find all the files and add them to a text file. Then grep them against your list, then use that list. ``` find . -name '*.conf' > all_files.txt grep -F -f serverlist all_files.txt > to_change.txt ``` Then use to_change.txt for the initial loop I describe instead of the output of the find command.

Collectives™ on Stack Overflow

How to add variable text in different files using for loop in bash script

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related