Script to Update Host File
I have the following command that correctly creates the /etc/hosts file that I want to build. However, I cannot write it per the 2nd form due to permissions, of course. So I tried variations of the 3rd form, but it still errors on permissions. Can someone give me a suggestion to try?
cat hosts.tmp ; echo -n "myremotehost " ; cat ip.txt
cat hosts.tmp ; echo -n "myremotehost " ; cat ip.txt > /etc/hosts
cat hosts.tmp ; echo -n "myremotehost " ; echo mypassword | sudo -S cat ip.txt > /etc/hosts
scripts
asked Sep 26 '13 at 12:14
EdgeCaseEdgeCase
2861616
bumped to the homepage by Community♦ 13 hours ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
add a comment |
I have the following command that correctly creates the /etc/hosts file that I want to build. However, I cannot write it per the 2nd form due to permissions, of course. So I tried variations of the 3rd form, but it still errors on permissions. Can someone give me a suggestion to try?
cat hosts.tmp ; echo -n "myremotehost " ; cat ip.txt
cat hosts.tmp ; echo -n "myremotehost " ; cat ip.txt > /etc/hosts
cat hosts.tmp ; echo -n "myremotehost " ; echo mypassword | sudo -S cat ip.txt > /etc/hosts
scripts
asked Sep 26 '13 at 12:14
EdgeCaseEdgeCase
2861616
bumped to the homepage by Community♦ 13 hours ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
I suspect you might be trying to re-invent the wheel here: gaenserich.github.io/hostsblock -- anyway, if that's not the case, you can perhaps get answers to your question(s) in the script(s) there ;-)
– Sadi
Sep 26 '13 at 12:43
add a comment |
I have the following command that correctly creates the /etc/hosts file that I want to build. However, I cannot write it per the 2nd form due to permissions, of course. So I tried variations of the 3rd form, but it still errors on permissions. Can someone give me a suggestion to try?
cat hosts.tmp ; echo -n "myremotehost " ; cat ip.txt
cat hosts.tmp ; echo -n "myremotehost " ; cat ip.txt > /etc/hosts
cat hosts.tmp ; echo -n "myremotehost " ; echo mypassword | sudo -S cat ip.txt > /etc/hosts
scripts
asked Sep 26 '13 at 12:14
EdgeCaseEdgeCase
2861616
I have the following command that correctly creates the /etc/hosts file that I want to build. However, I cannot write it per the 2nd form due to permissions, of course. So I tried variations of the 3rd form, but it still errors on permissions. Can someone give me a suggestion to try?
cat hosts.tmp ; echo -n "myremotehost " ; cat ip.txt
cat hosts.tmp ; echo -n "myremotehost " ; cat ip.txt > /etc/hosts
cat hosts.tmp ; echo -n "myremotehost " ; echo mypassword | sudo -S cat ip.txt > /etc/hosts
scripts
scripts
asked Sep 26 '13 at 12:14
EdgeCaseEdgeCase
2861616
asked Sep 26 '13 at 12:14
EdgeCaseEdgeCase
2861616
asked Sep 26 '13 at 12:14
EdgeCaseEdgeCase
2861616
asked Sep 26 '13 at 12:14
EdgeCaseEdgeCase
2861616
asked Sep 26 '13 at 12:14
EdgeCaseEdgeCase
2861616
2861616
bumped to the homepage by Community♦ 13 hours ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
bumped to the homepage by Community♦ 13 hours ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
I suspect you might be trying to re-invent the wheel here: gaenserich.github.io/hostsblock -- anyway, if that's not the case, you can perhaps get answers to your question(s) in the script(s) there ;-)
– Sadi
Sep 26 '13 at 12:43
add a comment |
I suspect you might be trying to re-invent the wheel here: gaenserich.github.io/hostsblock -- anyway, if that's not the case, you can perhaps get answers to your question(s) in the script(s) there ;-)
– Sadi
Sep 26 '13 at 12:43
I suspect you might be trying to re-invent the wheel here: gaenserich.github.io/hostsblock -- anyway, if that's not the case, you can perhaps get answers to your question(s) in the script(s) there ;-)
– Sadi
Sep 26 '13 at 12:43
I suspect you might be trying to re-invent the wheel here: gaenserich.github.io/hostsblock -- anyway, if that's not the case, you can perhaps get answers to your question(s) in the script(s) there ;-)
– Sadi
Sep 26 '13 at 12:43
add a comment |
2 Answers
2
active
oldest
votes
This was hard for me to find out! (Relative newbie to Linux.)
In terminal, type sudo -i, then log in with your user password.
You will be in the root directory, with God-like powers... :>)
I also found bash filename.sh will start the script.
Forgive me, I feel a great sense of accomplishment having
written a script (per suggestions in another post) which
killed all ads in Youtube!
edited Oct 13 '15 at 9:45
hg8
9,839125591
answered Jun 1 '15 at 4:17
B. FifeB. Fife
247
add a comment |
I would put the instructions to modify your /etc/hosts file in a shell script, say modify-hosts.sh, then execute
sudo modify-hosts.sh
If you insist on running the script without having to provide a password, then add a NOPASSWD entry specifically for this script and your username to /etc/sudoers.
As for the contents of the file, you could do:
cp hosts.tmp > /etc/hosts
echo "myremotehost $(cat /path/to/ip.txt)" >> /etc/hosts
More conveniently, if myhostname already has an entry in /etc/hosts you can edit it in place:
sed -i -e 's/myhostname .*/myhostname '$(cat ip.txt)'/' /etc/hosts
And that statement you can even sudo on one line
sudo sed -i -e 's/myhostname .*/myhostname '$(cat ip.txt)'/' /etc/hosts
without running into redirection issues.
answered Sep 26 '13 at 12:41
zwetszwets
8,29922340
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
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votes
This was hard for me to find out! (Relative newbie to Linux.)
In terminal, type sudo -i, then log in with your user password.
You will be in the root directory, with God-like powers... :>)
I also found bash filename.sh will start the script.
Forgive me, I feel a great sense of accomplishment having
written a script (per suggestions in another post) which
killed all ads in Youtube!
edited Oct 13 '15 at 9:45
hg8
9,839125591
answered Jun 1 '15 at 4:17
B. FifeB. Fife
247
add a comment |
This was hard for me to find out! (Relative newbie to Linux.)
In terminal, type sudo -i, then log in with your user password.
You will be in the root directory, with God-like powers... :>)
I also found bash filename.sh will start the script.
Forgive me, I feel a great sense of accomplishment having
written a script (per suggestions in another post) which
killed all ads in Youtube!
edited Oct 13 '15 at 9:45
hg8
9,839125591
answered Jun 1 '15 at 4:17
B. FifeB. Fife
247
add a comment |
This was hard for me to find out! (Relative newbie to Linux.)
In terminal, type sudo -i, then log in with your user password.
You will be in the root directory, with God-like powers... :>)
I also found bash filename.sh will start the script.
Forgive me, I feel a great sense of accomplishment having
written a script (per suggestions in another post) which
killed all ads in Youtube!
edited Oct 13 '15 at 9:45
hg8
9,839125591
answered Jun 1 '15 at 4:17
B. FifeB. Fife
247
This was hard for me to find out! (Relative newbie to Linux.)
In terminal, type sudo -i, then log in with your user password.
You will be in the root directory, with God-like powers... :>)
I also found bash filename.sh will start the script.
Forgive me, I feel a great sense of accomplishment having
written a script (per suggestions in another post) which
killed all ads in Youtube!
edited Oct 13 '15 at 9:45
hg8
9,839125591
answered Jun 1 '15 at 4:17
B. FifeB. Fife
247
edited Oct 13 '15 at 9:45
hg8
9,839125591
edited Oct 13 '15 at 9:45
hg8
9,839125591
edited Oct 13 '15 at 9:45
hg8
9,839125591
9,839125591
answered Jun 1 '15 at 4:17
B. FifeB. Fife
247
answered Jun 1 '15 at 4:17
B. FifeB. Fife
247
answered Jun 1 '15 at 4:17
B. FifeB. Fife
247
247
add a comment |
add a comment |
I would put the instructions to modify your /etc/hosts file in a shell script, say modify-hosts.sh, then execute
sudo modify-hosts.sh
If you insist on running the script without having to provide a password, then add a NOPASSWD entry specifically for this script and your username to /etc/sudoers.
As for the contents of the file, you could do:
cp hosts.tmp > /etc/hosts
echo "myremotehost $(cat /path/to/ip.txt)" >> /etc/hosts
More conveniently, if myhostname already has an entry in /etc/hosts you can edit it in place:
sed -i -e 's/myhostname .*/myhostname '$(cat ip.txt)'/' /etc/hosts
And that statement you can even sudo on one line
sudo sed -i -e 's/myhostname .*/myhostname '$(cat ip.txt)'/' /etc/hosts
without running into redirection issues.
answered Sep 26 '13 at 12:41
zwetszwets
8,29922340
add a comment |
I would put the instructions to modify your /etc/hosts file in a shell script, say modify-hosts.sh, then execute
sudo modify-hosts.sh
If you insist on running the script without having to provide a password, then add a NOPASSWD entry specifically for this script and your username to /etc/sudoers.
As for the contents of the file, you could do:
cp hosts.tmp > /etc/hosts
echo "myremotehost $(cat /path/to/ip.txt)" >> /etc/hosts
More conveniently, if myhostname already has an entry in /etc/hosts you can edit it in place:
sed -i -e 's/myhostname .*/myhostname '$(cat ip.txt)'/' /etc/hosts
And that statement you can even sudo on one line
sudo sed -i -e 's/myhostname .*/myhostname '$(cat ip.txt)'/' /etc/hosts
without running into redirection issues.
answered Sep 26 '13 at 12:41
zwetszwets
8,29922340
add a comment |
I would put the instructions to modify your /etc/hosts file in a shell script, say modify-hosts.sh, then execute
sudo modify-hosts.sh
If you insist on running the script without having to provide a password, then add a NOPASSWD entry specifically for this script and your username to /etc/sudoers.
As for the contents of the file, you could do:
cp hosts.tmp > /etc/hosts
echo "myremotehost $(cat /path/to/ip.txt)" >> /etc/hosts
More conveniently, if myhostname already has an entry in /etc/hosts you can edit it in place:
sed -i -e 's/myhostname .*/myhostname '$(cat ip.txt)'/' /etc/hosts
And that statement you can even sudo on one line
sudo sed -i -e 's/myhostname .*/myhostname '$(cat ip.txt)'/' /etc/hosts
without running into redirection issues.
answered Sep 26 '13 at 12:41
zwetszwets
8,29922340
I would put the instructions to modify your /etc/hosts file in a shell script, say modify-hosts.sh, then execute
sudo modify-hosts.sh
If you insist on running the script without having to provide a password, then add a NOPASSWD entry specifically for this script and your username to /etc/sudoers.
As for the contents of the file, you could do:
cp hosts.tmp > /etc/hosts
echo "myremotehost $(cat /path/to/ip.txt)" >> /etc/hosts
More conveniently, if myhostname already has an entry in /etc/hosts you can edit it in place:
sed -i -e 's/myhostname .*/myhostname '$(cat ip.txt)'/' /etc/hosts
And that statement you can even sudo on one line
sudo sed -i -e 's/myhostname .*/myhostname '$(cat ip.txt)'/' /etc/hosts
without running into redirection issues.
answered Sep 26 '13 at 12:41
zwetszwets
8,29922340
edited Sep 26 '13 at 12:54
answered Sep 26 '13 at 12:41
zwetszwets
8,29922340
answered Sep 26 '13 at 12:41
zwetszwets
8,29922340
answered Sep 26 '13 at 12:41
zwetszwets
8,29922340
8,29922340
add a comment |
add a comment |
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I suspect you might be trying to re-invent the wheel here: gaenserich.github.io/hostsblock -- anyway, if that's not the case, you can perhaps get answers to your question(s) in the script(s) there ;-)
– Sadi
Sep 26 '13 at 12:43