Running commands using root in a loop

Question

I`m following along this post :

in order to setup VPN Server in Ubunto, however when i come to this command :

for vpn in /proc/sys/net/ipv4/conf/*; do echo 0 > $vpn/accept_redirects; echo 0 &gt; $vpn/send_redirects; done

I get Permission Denied, also i`m running the command using sudo!

i know sudo doesnt work with redirects but i dont know how to rewrite this command in order to execute it using su -c

First thing: Replace `>` with `>`. That's an HTML issue. – Sven Sep 16 '14 at 15:32 — Sven, Sep 16 '14 at 15:32

score 2 · Accepted Answer · answered Sep 16 '14 at 15:29

2

You can run it as root after by

 sudo su -
 for vpn in /proc/sys/net/ipv4/conf/*; do echo 0 > $vpn/accept_redirects; echo 0 > $vpn/send_redirects; done

or with sudo as

sudo /bin/bash -c "for vpn in /proc/sys/net/ipv4/conf/*; do echo 0 > $vpn/accept_redirects; echo 0 > $vpn/send_redirects; done"

answered Sep 16 '14 at 15:29

Stone

still gives me /bin/bash: /proc/sys/net/ipv4/conf/lo/send_redirects: Permission denied – Stacker Sep 16 '14 at 15:30
also it gives me gt: error: neither tool nor script specified; option -help lists possible tools – Stacker Sep 16 '14 at 15:31
2

Be careful. The command is crap because the author of the original post didn't noticed that `>` got replaced by the HTML `>` – Sven Sep 16 '14 at 15:31

score 1 · Answer 2 · answered Sep 16 '14 at 15:29

1

You can use sudo bash -c to make it work:

 for vpn in /proc/sys/net/ipv4/conf/*; do 
   sudo bash -c 'echo 0 > $vpn/accept_redirects; echo 0 > $vpn/send_redirects'
  done

answered Sep 16 '14 at 15:29

ThoriumBR

2 Answers2