Ubuntu - “sudo iptables” command works in terminal, doesn't work in bash script
I'm using a simple terminal command that adds a rule to iptables and it executes without problems:
sudo iptables -A OUTPUT -p tcp -m string --string "facebook.com" --algo kmp -j REJECT
When I run that command in a bash script, it returns sudo: ./script.sh: command not found
The script looks like this:
#!/bin/bash
sudo iptables -A OUTPUT -p tcp -m string --string "facebook.com" --algo kmp -j REJECT
linux scripting sudo
edited 53 mins ago
Jeff Schaller♦
44.4k1162143
asked 2 hours ago
Marin LeontenkoMarin Leontenko
82
New contributor
Marin Leontenko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
I'm using a simple terminal command that adds a rule to iptables and it executes without problems:
sudo iptables -A OUTPUT -p tcp -m string --string "facebook.com" --algo kmp -j REJECT
When I run that command in a bash script, it returns sudo: ./script.sh: command not found
The script looks like this:
#!/bin/bash
sudo iptables -A OUTPUT -p tcp -m string --string "facebook.com" --algo kmp -j REJECT
linux scripting sudo
edited 53 mins ago
Jeff Schaller♦
44.4k1162143
asked 2 hours ago
Marin LeontenkoMarin Leontenko
82
New contributor
Marin Leontenko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
1
Isscript.shexecutable?chmod +x script.sh
– Thomas
1 hour ago
Apparently it wasn't. It works after I changed permission. I thought all scripts are executable by default. Thanks!
– Marin Leontenko
1 hour ago
@MarinLeontenko a script is just another file. By that logic, all files would be executable by default.
– multithr3at3d
52 secs ago
add a comment |
I'm using a simple terminal command that adds a rule to iptables and it executes without problems:
sudo iptables -A OUTPUT -p tcp -m string --string "facebook.com" --algo kmp -j REJECT
When I run that command in a bash script, it returns sudo: ./script.sh: command not found
The script looks like this:
#!/bin/bash
sudo iptables -A OUTPUT -p tcp -m string --string "facebook.com" --algo kmp -j REJECT
linux scripting sudo
edited 53 mins ago
Jeff Schaller♦
44.4k1162143
asked 2 hours ago
Marin LeontenkoMarin Leontenko
82
New contributor
Marin Leontenko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I'm using a simple terminal command that adds a rule to iptables and it executes without problems:
sudo iptables -A OUTPUT -p tcp -m string --string "facebook.com" --algo kmp -j REJECT
When I run that command in a bash script, it returns sudo: ./script.sh: command not found
The script looks like this:
#!/bin/bash
sudo iptables -A OUTPUT -p tcp -m string --string "facebook.com" --algo kmp -j REJECT
linux scripting sudo
linux scripting sudo
edited 53 mins ago
Jeff Schaller♦
44.4k1162143
asked 2 hours ago
Marin LeontenkoMarin Leontenko
82
New contributor
Marin Leontenko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 53 mins ago
Jeff Schaller♦
44.4k1162143
asked 2 hours ago
Marin LeontenkoMarin Leontenko
82
New contributor
Marin Leontenko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 53 mins ago
Jeff Schaller♦
44.4k1162143
edited 53 mins ago
Jeff Schaller♦
44.4k1162143
edited 53 mins ago
Jeff Schaller♦
44.4k1162143
44.4k1162143
asked 2 hours ago
Marin LeontenkoMarin Leontenko
82
New contributor
Marin Leontenko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 2 hours ago
Marin LeontenkoMarin Leontenko
82
asked 2 hours ago
Marin LeontenkoMarin Leontenko
82
82
New contributor
Marin Leontenko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Marin Leontenko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Marin Leontenko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
1
Isscript.shexecutable?chmod +x script.sh
– Thomas
1 hour ago
Apparently it wasn't. It works after I changed permission. I thought all scripts are executable by default. Thanks!
– Marin Leontenko
1 hour ago
@MarinLeontenko a script is just another file. By that logic, all files would be executable by default.
– multithr3at3d
52 secs ago
add a comment |
1
Isscript.shexecutable?chmod +x script.sh
– Thomas
1 hour ago
Apparently it wasn't. It works after I changed permission. I thought all scripts are executable by default. Thanks!
– Marin Leontenko
1 hour ago
@MarinLeontenko a script is just another file. By that logic, all files would be executable by default.
– multithr3at3d
52 secs ago
1
1
Is
script.sh executable? chmod +x script.sh– Thomas
1 hour ago
Is
script.sh executable? chmod +x script.sh– Thomas
1 hour ago
Apparently it wasn't. It works after I changed permission. I thought all scripts are executable by default. Thanks!
– Marin Leontenko
1 hour ago
Apparently it wasn't. It works after I changed permission. I thought all scripts are executable by default. Thanks!
– Marin Leontenko
1 hour ago
@MarinLeontenko a script is just another file. By that logic, all files would be executable by default.
– multithr3at3d
52 secs ago
@MarinLeontenko a script is just another file. By that logic, all files would be executable by default.
– multithr3at3d
52 secs ago
add a comment |
1 Answer
1
active
oldest
votes
If a script is not executable, one has to call it with an appropriate shell like /bin/sh or /bin/bash. This will ignore the shebang line and the script will be executed with the calling shell.
sudo /bin/sh ./script.sh
To run the script as inteded by OP you have to give the script execution rights.
chmod +x script.sh
sudo ./script.sh
In this case the script is executed with the shell of the shebang line.
answered 40 mins ago
ThomasThomas
4,07561430
add a comment |
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1 Answer
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1 Answer
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active
oldest
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oldest
votes
active
oldest
votes
If a script is not executable, one has to call it with an appropriate shell like /bin/sh or /bin/bash. This will ignore the shebang line and the script will be executed with the calling shell.
sudo /bin/sh ./script.sh
To run the script as inteded by OP you have to give the script execution rights.
chmod +x script.sh
sudo ./script.sh
In this case the script is executed with the shell of the shebang line.
answered 40 mins ago
ThomasThomas
4,07561430
add a comment |
If a script is not executable, one has to call it with an appropriate shell like /bin/sh or /bin/bash. This will ignore the shebang line and the script will be executed with the calling shell.
sudo /bin/sh ./script.sh
To run the script as inteded by OP you have to give the script execution rights.
chmod +x script.sh
sudo ./script.sh
In this case the script is executed with the shell of the shebang line.
answered 40 mins ago
ThomasThomas
4,07561430
add a comment |
If a script is not executable, one has to call it with an appropriate shell like /bin/sh or /bin/bash. This will ignore the shebang line and the script will be executed with the calling shell.
sudo /bin/sh ./script.sh
To run the script as inteded by OP you have to give the script execution rights.
chmod +x script.sh
sudo ./script.sh
In this case the script is executed with the shell of the shebang line.
answered 40 mins ago
ThomasThomas
4,07561430
If a script is not executable, one has to call it with an appropriate shell like /bin/sh or /bin/bash. This will ignore the shebang line and the script will be executed with the calling shell.
sudo /bin/sh ./script.sh
To run the script as inteded by OP you have to give the script execution rights.
chmod +x script.sh
sudo ./script.sh
In this case the script is executed with the shell of the shebang line.
answered 40 mins ago
ThomasThomas
4,07561430
answered 40 mins ago
ThomasThomas
4,07561430
answered 40 mins ago
ThomasThomas
4,07561430
answered 40 mins ago
ThomasThomas
4,07561430
4,07561430
add a comment |
add a comment |
Marin Leontenko is a new contributor. Be nice, and check out our Code of Conduct.
Marin Leontenko is a new contributor. Be nice, and check out our Code of Conduct.
Marin Leontenko is a new contributor. Be nice, and check out our Code of Conduct.
Marin Leontenko is a new contributor. Be nice, and check out our Code of Conduct.
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1
Is
script.shexecutable?chmod +x script.sh– Thomas
1 hour ago
Apparently it wasn't. It works after I changed permission. I thought all scripts are executable by default. Thanks!
– Marin Leontenko
1 hour ago
@MarinLeontenko a script is just another file. By that logic, all files would be executable by default.
– multithr3at3d
52 secs ago