Switching multiple user at once
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1
I have a need in my bash script where user have to execute one script on multiple hosts.
Lets say user1 , user2, & user3.
User1 have an access to switch to user2 but not user3 and the script has to be execute via user3.
To execute in one host - its possible as below- lets I am user1 and will execute below commands.
sudo -i -u user2
sudo -u user3 script <hostname>
But unable to execute on multiple hosts via for loop as below
#!/bin/bash
sudo -i -u user2;
for i in `cat /tmp/hostlist`;do
echo $i
sudo -u user3 script.sh $i
echo "----------------"
done
bash
edited Apr 4 at 8:41
dessert
25.7k674108
asked Apr 4 at 8:26
Jack15Jack15
62
add a comment |
1
I have a need in my bash script where user have to execute one script on multiple hosts.
Lets say user1 , user2, & user3.
User1 have an access to switch to user2 but not user3 and the script has to be execute via user3.
To execute in one host - its possible as below- lets I am user1 and will execute below commands.
sudo -i -u user2
sudo -u user3 script <hostname>
But unable to execute on multiple hosts via for loop as below
#!/bin/bash
sudo -i -u user2;
for i in `cat /tmp/hostlist`;do
echo $i
sudo -u user3 script.sh $i
echo "----------------"
done
bash
edited Apr 4 at 8:41
dessert
25.7k674108
asked Apr 4 at 8:26
Jack15Jack15
62
add a comment |
1
1
1
I have a need in my bash script where user have to execute one script on multiple hosts.
Lets say user1 , user2, & user3.
User1 have an access to switch to user2 but not user3 and the script has to be execute via user3.
To execute in one host - its possible as below- lets I am user1 and will execute below commands.
sudo -i -u user2
sudo -u user3 script <hostname>
But unable to execute on multiple hosts via for loop as below
#!/bin/bash
sudo -i -u user2;
for i in `cat /tmp/hostlist`;do
echo $i
sudo -u user3 script.sh $i
echo "----------------"
done
bash
edited Apr 4 at 8:41
dessert
25.7k674108
asked Apr 4 at 8:26
Jack15Jack15
62
I have a need in my bash script where user have to execute one script on multiple hosts.
Lets say user1 , user2, & user3.
User1 have an access to switch to user2 but not user3 and the script has to be execute via user3.
To execute in one host - its possible as below- lets I am user1 and will execute below commands.
sudo -i -u user2
sudo -u user3 script <hostname>
But unable to execute on multiple hosts via for loop as below
#!/bin/bash
sudo -i -u user2;
for i in `cat /tmp/hostlist`;do
echo $i
sudo -u user3 script.sh $i
echo "----------------"
done
bash
bash
edited Apr 4 at 8:41
dessert
25.7k674108
asked Apr 4 at 8:26
Jack15Jack15
62
edited Apr 4 at 8:41
dessert
25.7k674108
asked Apr 4 at 8:26
Jack15Jack15
62
edited Apr 4 at 8:41
dessert
25.7k674108
edited Apr 4 at 8:41
dessert
25.7k674108
edited Apr 4 at 8:41
dessert
25.7k674108
25.7k674108
asked Apr 4 at 8:26
Jack15Jack15
62
asked Apr 4 at 8:26
Jack15Jack15
62
asked Apr 4 at 8:26
Jack15Jack15
62
62
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
1
You need to execute second sudo as a argument to first sudo. It will looks like this:
#!/usr/bin/env bash
sudo -i -u user2 /bin/bash <<EOF
#commands here will be executed as user=user2
while IFS='' read -r i || [[ -n "$i" ]]; do
echo "$i"
sudo -u user3 script.sh "$i"
echo "----------------"
done </tmp/hostlist
EOF
Testing:
$ echo 111 >/tmp/hostlist
$ echo 222 >>/tmp/hostlist
$ echo 333 >>/tmp/hostlist
$ ./loophosts
111
----------------
222
----------------
333
----------------
answered Apr 4 at 8:34
LeonidMewLeonidMew
1,235624
1
for i in $(cat /tmp/hostlist)will fail if there are lines with IFS characters in the file, to loop over a file line by line one should rather usewhile IFS='' read -r l || [[ -n "$l" ]]; do (something with $l); done </tmp/hostlist, see stackoverflow.com/q/10929453/6164712.
– dessert
Apr 4 at 8:38
The error about you don't have EOF, put it in place and error will gone
– LeonidMew
Apr 4 at 9:00
Same error? Do you have "EOL" at end of heredoc?
– LeonidMew
Apr 4 at 9:12
Yes I placed at end EOF. The error gone. But gives the single line as output ----------------
– Jack15
Apr 4 at 9:14
You can debug bash script if putset -xas second line of script, then it will show every command it run. I guess something wrong with /tmp/hostlist
– LeonidMew
Apr 4 at 9:17
|
show 5 more comments
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
1
You need to execute second sudo as a argument to first sudo. It will looks like this:
#!/usr/bin/env bash
sudo -i -u user2 /bin/bash <<EOF
#commands here will be executed as user=user2
while IFS='' read -r i || [[ -n "$i" ]]; do
echo "$i"
sudo -u user3 script.sh "$i"
echo "----------------"
done </tmp/hostlist
EOF
Testing:
$ echo 111 >/tmp/hostlist
$ echo 222 >>/tmp/hostlist
$ echo 333 >>/tmp/hostlist
$ ./loophosts
111
----------------
222
----------------
333
----------------
answered Apr 4 at 8:34
LeonidMewLeonidMew
1,235624
1
for i in $(cat /tmp/hostlist)will fail if there are lines with IFS characters in the file, to loop over a file line by line one should rather usewhile IFS='' read -r l || [[ -n "$l" ]]; do (something with $l); done </tmp/hostlist, see stackoverflow.com/q/10929453/6164712.
– dessert
Apr 4 at 8:38
The error about you don't have EOF, put it in place and error will gone
– LeonidMew
Apr 4 at 9:00
Same error? Do you have "EOL" at end of heredoc?
– LeonidMew
Apr 4 at 9:12
Yes I placed at end EOF. The error gone. But gives the single line as output ----------------
– Jack15
Apr 4 at 9:14
You can debug bash script if putset -xas second line of script, then it will show every command it run. I guess something wrong with /tmp/hostlist
– LeonidMew
Apr 4 at 9:17
|
show 5 more comments
1
You need to execute second sudo as a argument to first sudo. It will looks like this:
#!/usr/bin/env bash
sudo -i -u user2 /bin/bash <<EOF
#commands here will be executed as user=user2
while IFS='' read -r i || [[ -n "$i" ]]; do
echo "$i"
sudo -u user3 script.sh "$i"
echo "----------------"
done </tmp/hostlist
EOF
Testing:
$ echo 111 >/tmp/hostlist
$ echo 222 >>/tmp/hostlist
$ echo 333 >>/tmp/hostlist
$ ./loophosts
111
----------------
222
----------------
333
----------------
answered Apr 4 at 8:34
LeonidMewLeonidMew
1,235624
1
for i in $(cat /tmp/hostlist)will fail if there are lines with IFS characters in the file, to loop over a file line by line one should rather usewhile IFS='' read -r l || [[ -n "$l" ]]; do (something with $l); done </tmp/hostlist, see stackoverflow.com/q/10929453/6164712.
– dessert
Apr 4 at 8:38
The error about you don't have EOF, put it in place and error will gone
– LeonidMew
Apr 4 at 9:00
Same error? Do you have "EOL" at end of heredoc?
– LeonidMew
Apr 4 at 9:12
Yes I placed at end EOF. The error gone. But gives the single line as output ----------------
– Jack15
Apr 4 at 9:14
You can debug bash script if putset -xas second line of script, then it will show every command it run. I guess something wrong with /tmp/hostlist
– LeonidMew
Apr 4 at 9:17
|
show 5 more comments
1
1
1
You need to execute second sudo as a argument to first sudo. It will looks like this:
#!/usr/bin/env bash
sudo -i -u user2 /bin/bash <<EOF
#commands here will be executed as user=user2
while IFS='' read -r i || [[ -n "$i" ]]; do
echo "$i"
sudo -u user3 script.sh "$i"
echo "----------------"
done </tmp/hostlist
EOF
Testing:
$ echo 111 >/tmp/hostlist
$ echo 222 >>/tmp/hostlist
$ echo 333 >>/tmp/hostlist
$ ./loophosts
111
----------------
222
----------------
333
----------------
answered Apr 4 at 8:34
LeonidMewLeonidMew
1,235624
You need to execute second sudo as a argument to first sudo. It will looks like this:
#!/usr/bin/env bash
sudo -i -u user2 /bin/bash <<EOF
#commands here will be executed as user=user2
while IFS='' read -r i || [[ -n "$i" ]]; do
echo "$i"
sudo -u user3 script.sh "$i"
echo "----------------"
done </tmp/hostlist
EOF
Testing:
$ echo 111 >/tmp/hostlist
$ echo 222 >>/tmp/hostlist
$ echo 333 >>/tmp/hostlist
$ ./loophosts
111
----------------
222
----------------
333
----------------
answered Apr 4 at 8:34
LeonidMewLeonidMew
1,235624
edited Apr 4 at 9:57
answered Apr 4 at 8:34
LeonidMewLeonidMew
1,235624
answered Apr 4 at 8:34
LeonidMewLeonidMew
1,235624
answered Apr 4 at 8:34
LeonidMewLeonidMew
1,235624
1,235624
1
for i in $(cat /tmp/hostlist)will fail if there are lines with IFS characters in the file, to loop over a file line by line one should rather usewhile IFS='' read -r l || [[ -n "$l" ]]; do (something with $l); done </tmp/hostlist, see stackoverflow.com/q/10929453/6164712.
– dessert
Apr 4 at 8:38
The error about you don't have EOF, put it in place and error will gone
– LeonidMew
Apr 4 at 9:00
Same error? Do you have "EOL" at end of heredoc?
– LeonidMew
Apr 4 at 9:12
Yes I placed at end EOF. The error gone. But gives the single line as output ----------------
– Jack15
Apr 4 at 9:14
You can debug bash script if putset -xas second line of script, then it will show every command it run. I guess something wrong with /tmp/hostlist
– LeonidMew
Apr 4 at 9:17
|
show 5 more comments
1
for i in $(cat /tmp/hostlist)will fail if there are lines with IFS characters in the file, to loop over a file line by line one should rather usewhile IFS='' read -r l || [[ -n "$l" ]]; do (something with $l); done </tmp/hostlist, see stackoverflow.com/q/10929453/6164712.
– dessert
Apr 4 at 8:38
The error about you don't have EOF, put it in place and error will gone
– LeonidMew
Apr 4 at 9:00
Same error? Do you have "EOL" at end of heredoc?
– LeonidMew
Apr 4 at 9:12
Yes I placed at end EOF. The error gone. But gives the single line as output ----------------
– Jack15
Apr 4 at 9:14
You can debug bash script if putset -xas second line of script, then it will show every command it run. I guess something wrong with /tmp/hostlist
– LeonidMew
Apr 4 at 9:17
1
1
for i in $(cat /tmp/hostlist) will fail if there are lines with IFS characters in the file, to loop over a file line by line one should rather use while IFS='' read -r l || [[ -n "$l" ]]; do (something with $l); done </tmp/hostlist, see stackoverflow.com/q/10929453/6164712.– dessert
Apr 4 at 8:38
for i in $(cat /tmp/hostlist) will fail if there are lines with IFS characters in the file, to loop over a file line by line one should rather use while IFS='' read -r l || [[ -n "$l" ]]; do (something with $l); done </tmp/hostlist, see stackoverflow.com/q/10929453/6164712.– dessert
Apr 4 at 8:38
The error about you don't have EOF, put it in place and error will gone
– LeonidMew
Apr 4 at 9:00
The error about you don't have EOF, put it in place and error will gone
– LeonidMew
Apr 4 at 9:00
Same error? Do you have "EOL" at end of heredoc?
– LeonidMew
Apr 4 at 9:12
Same error? Do you have "EOL" at end of heredoc?
– LeonidMew
Apr 4 at 9:12
Yes I placed at end EOF. The error gone. But gives the single line as output ----------------
– Jack15
Apr 4 at 9:14
Yes I placed at end EOF. The error gone. But gives the single line as output ----------------
– Jack15
Apr 4 at 9:14
You can debug bash script if put
set -x as second line of script, then it will show every command it run. I guess something wrong with /tmp/hostlist– LeonidMew
Apr 4 at 9:17
You can debug bash script if put
set -x as second line of script, then it will show every command it run. I guess something wrong with /tmp/hostlist– LeonidMew
Apr 4 at 9:17
|
show 5 more comments
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