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Top Forums UNIX for Advanced & Expert Users Inserting lines between specific other lines in a file Post 303044790 by anaigini45 on Wednesday 4th of March 2020 04:34:56 AM
Old 03-04-2020
Inserting lines between specific other lines in a file

Hi,


I need to edit ssl.conf and add a few customized lines below the variable "Listen" at the top of the file.

I tried a few ways to do it, however failed to accomplish what I need.



These are the lines that I need to add into the file after the top most "Listen" variable in the file.


Code:
Header always set Strict-Transport-Security "max-age=31536000; includeSubDomains"
Header always set X-XSS-Protection "1; mode=block"
#Header always set Referrer-Policy "same-origin"
Header always set X-Permitted-Cross-Domain-Policies "master-only"
Header unset X-Powered-By
#Header set X-Content-Type-Options "nosniff"

AddOutputFilterByType DEFLATE text/html text/plain text/xml text/javascript application/x-javascript text/css application/javascript

# enable expirations
     ExpiresActive On

# expire files after a day in the client's cache
# expire files after 10 days in the client's cache
     ExpiresByType image/gif A864000
     ExpiresByType image/jpeg A864000
     ExpiresByType image/jpg A864000
     ExpiresByType image/png A864000
     ExpiresByType text/javascript A864000
     ExpiresByType application/x-javascript A864000
     ExpiresByType text/css A864000
     ExpiresByType image/x-icon A864000
     ExpiresByType application/javascript A864000

I use the steps below to add the lines above :


1) arg=$(grep -o -m 1 Listen ssl.conf | head -1)
2) vi add.txt


Code:
Header always set Strict-Transport-Security "max-age=31536000; includeSubDomains"
Header always set X-XSS-Protection "1; mode=block"
#Header always set Referrer-Policy "same-origin"
Header always set X-Permitted-Cross-Domain-Policies "master-only"
Header unset X-Powered-By
#Header set X-Content-Type-Options "nosniff"

AddOutputFilterByType DEFLATE text/html text/plain text/xml text/javascript application/x-javascript text/css application/javascript

# enable expirations
     ExpiresActive On

# expire files after a day in the client's cache
# expire files after 10 days in the client's cache
     ExpiresByType image/gif A864000
     ExpiresByType image/jpeg A864000
     ExpiresByType image/jpg A864000
     ExpiresByType image/png A864000
     ExpiresByType text/javascript A864000
     ExpiresByType application/x-javascript A864000
     ExpiresByType text/css A864000
     ExpiresByType image/x-icon A864000
     ExpiresByType application/javascript A864000

3) sed -i '/$arg/r add.txt' ssl.conf


The steps above do not work.


I then tried this :


Code:
zabbix-cj:/opt/rh/httpd24/root/etc/httpd/conf.d# awk '/$arg/{print $0 RS \
> "Header always set Strict-Transport-Security "max-age=31536000; includeSubDomains"" RS \
> "Header always set X-XSS-Protection "1; mode=block"" RS \
> "Header always set X-Permitted-Cross-Domain-Policies "master-only"" RS \
> "Header unset X-Powered-By";next}1' ssl.conf

This throws error :


Code:
awk: cmd. line:2: "Header always set Strict-Transport-Security "max-age=31536000; includeSubDomains"" RS \
awk: cmd. line:2:                                                      ^ syntax error

Please help correct the syntax for the steps I took above (if possible), else suggest another way that will produce what I need.

Last edited by Scrutinizer; 03-04-2020 at 05:32 PM.. Reason: Additional code tags
 
Test Your Knowledge in Computers #555
Difficulty: Easy
In C, if double b = 3.14159265359; printf("b=%10f ", b); then the output with be b=3.141593
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