Trying to export a path from inside a bash script [duplicate]
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This question already has an answer here:
How can I make environment variables “exported” in a shell script stick around?
2 answers
I am trying to put my whole environment set up into a single bash file. I am only hitting one issue. When I try to export a new path from inside the file it is not setting the path in the environment that the bash file was executed in. I want to do
>>sudo -H sh test.sh
Where test.sh is
bunch of installs
export PATH=/home/ubuntu/anaconda3/bin:$PATH
a second bunch of installs
I thought this was the purpose of eval so I tried
eval `export PATH=/home/ubuntu/anaconda3/bin:$PATH`
and even
eval `echo "export PATH=/home/ubuntu/anaconda3/bin:$PATH"`
but I can't access the command in the terminal. If I do it manually it works.
---------------UPDATE------------
The standard bash execution completes in a sub-shell so the environment variables are lost after execution. If you want to execute in the same shell then you
source test.sh
However, I need to be able to have full permissions in the execution so I need to use sudo. As explained here you cannot call sudo source but they did provide a hack to get it to work
source <(sudo cat /etc/environment)
bash path eval
asked Mar 1 at 23:40
KeithKeith
1134
marked as duplicate by Kusalananda♦ bash
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This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
add a comment |
This question already has an answer here:
How can I make environment variables “exported” in a shell script stick around?
2 answers
I am trying to put my whole environment set up into a single bash file. I am only hitting one issue. When I try to export a new path from inside the file it is not setting the path in the environment that the bash file was executed in. I want to do
>>sudo -H sh test.sh
Where test.sh is
bunch of installs
export PATH=/home/ubuntu/anaconda3/bin:$PATH
a second bunch of installs
I thought this was the purpose of eval so I tried
eval `export PATH=/home/ubuntu/anaconda3/bin:$PATH`
and even
eval `echo "export PATH=/home/ubuntu/anaconda3/bin:$PATH"`
but I can't access the command in the terminal. If I do it manually it works.
---------------UPDATE------------
The standard bash execution completes in a sub-shell so the environment variables are lost after execution. If you want to execute in the same shell then you
source test.sh
However, I need to be able to have full permissions in the execution so I need to use sudo. As explained here you cannot call sudo source but they did provide a hack to get it to work
source <(sudo cat /etc/environment)
bash path eval
asked Mar 1 at 23:40
KeithKeith
1134
marked as duplicate by Kusalananda♦ bash
Users with the bash badge can single-handedly close bash questions as duplicates and reopen them as needed.
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Mar 2 at 8:04
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
add a comment |
This question already has an answer here:
How can I make environment variables “exported” in a shell script stick around?
2 answers
I am trying to put my whole environment set up into a single bash file. I am only hitting one issue. When I try to export a new path from inside the file it is not setting the path in the environment that the bash file was executed in. I want to do
>>sudo -H sh test.sh
Where test.sh is
bunch of installs
export PATH=/home/ubuntu/anaconda3/bin:$PATH
a second bunch of installs
I thought this was the purpose of eval so I tried
eval `export PATH=/home/ubuntu/anaconda3/bin:$PATH`
and even
eval `echo "export PATH=/home/ubuntu/anaconda3/bin:$PATH"`
but I can't access the command in the terminal. If I do it manually it works.
---------------UPDATE------------
The standard bash execution completes in a sub-shell so the environment variables are lost after execution. If you want to execute in the same shell then you
source test.sh
However, I need to be able to have full permissions in the execution so I need to use sudo. As explained here you cannot call sudo source but they did provide a hack to get it to work
source <(sudo cat /etc/environment)
bash path eval
asked Mar 1 at 23:40
KeithKeith
1134
This question already has an answer here:
How can I make environment variables “exported” in a shell script stick around?
2 answers
I am trying to put my whole environment set up into a single bash file. I am only hitting one issue. When I try to export a new path from inside the file it is not setting the path in the environment that the bash file was executed in. I want to do
>>sudo -H sh test.sh
Where test.sh is
bunch of installs
export PATH=/home/ubuntu/anaconda3/bin:$PATH
a second bunch of installs
I thought this was the purpose of eval so I tried
eval `export PATH=/home/ubuntu/anaconda3/bin:$PATH`
and even
eval `echo "export PATH=/home/ubuntu/anaconda3/bin:$PATH"`
but I can't access the command in the terminal. If I do it manually it works.
---------------UPDATE------------
The standard bash execution completes in a sub-shell so the environment variables are lost after execution. If you want to execute in the same shell then you
source test.sh
However, I need to be able to have full permissions in the execution so I need to use sudo. As explained here you cannot call sudo source but they did provide a hack to get it to work
source <(sudo cat /etc/environment)
This question already has an answer here:
How can I make environment variables “exported” in a shell script stick around?
2 answers
bash path eval
bash path eval
asked Mar 1 at 23:40
KeithKeith
1134
asked Mar 1 at 23:40
KeithKeith
1134
edited Mar 4 at 19:14
Keith
asked Mar 1 at 23:40
KeithKeith
1134
asked Mar 1 at 23:40
KeithKeith
1134
asked Mar 1 at 23:40
KeithKeith
1134
1134
marked as duplicate by Kusalananda♦ bash
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1 Answer
1
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votes
If you're using bash, then the short answer is to put your exported variables into one of the existing personal startup (or initialization) files. Variables exported in your terminal get lost when you close it. Variables exported in your script get lost when your script exits.
There are other startup files which may or may not exist, but these are the most common ones:
~/.bashrc- executed by bash for non-login shells
~/.bash_profile- executed by bash for interactive login shells
~/.profileis not read if this file exists- also reads
~/.bashrcon some systems - needs a (logout and) login to reread the file
~/.profile- executed by the command interpreter for login shells
- is not read when
~/.bash_profileexists - also reads
~/.bashrcon some systems - needs a (logout and) login to reread the file
Or you create a new startup file with all your personal customizations and read it (source it) with source /path/to/myenvironment or . /path/to/myenvironment either on the command line / in your scripts or in one of the startup files mentioned above.
Some example startup files are in package bash-doc in Ubuntu/Debian (install with sudo apt-get install bash-doc) and are installed to /usr/share/doc/bash/examples/startup-files/
answered Mar 2 at 7:06
FreddyFreddy
1,429210
Thanks but I am using EC2 so I will only go into this machine once. I want to have one setup script. I have read the posts erroneously marked as duplicate and I think the answer is to execute the script with 'sudo source test.sh'
– Keith
Mar 3 at 2:40
@Keith As environment files usually don't install things, you could put all your stuff intotest.sh, make it executable and run it withsudo ./test.sh. Don't forget to add#!/bin/bash(bash) or#!/bin/sh(dash) as first line to your script. Or if you want an additional environment file, then put all your exported paths into filemyenvand runsudo bash -c ". /path/to/myenv; /path/to/test.sh"(orsudo sh -c "..."for dash). If you export the path to your script inmyenv, you could also writesudo bash -c ". /path/to/myenv; test.sh".
– Freddy
Mar 3 at 6:48
test.sh is not an environment file I just want one line in it to set up my environment during the install process. I have already tried all the things you mention but after executing the path is not set
– Keith
Mar 4 at 16:54
@Keith You can't set environment variables in a script. As soon as the script exits the variables are gone. You have to source an environment file before that, either automatically (~/.bashrcetc.) or manually.
– Freddy
Mar 4 at 16:58
Don't tell me what I can't do. :P This works "source <(sudo cat test.sh)" Now I can set up and install everything in one big script on EC2. If you can update your answer to say why only this hackish way to do it works I'll accept it.
– Keith
Mar 4 at 17:45
|
show 2 more comments
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
If you're using bash, then the short answer is to put your exported variables into one of the existing personal startup (or initialization) files. Variables exported in your terminal get lost when you close it. Variables exported in your script get lost when your script exits.
There are other startup files which may or may not exist, but these are the most common ones:
~/.bashrc- executed by bash for non-login shells
~/.bash_profile- executed by bash for interactive login shells
~/.profileis not read if this file exists- also reads
~/.bashrcon some systems - needs a (logout and) login to reread the file
~/.profile- executed by the command interpreter for login shells
- is not read when
~/.bash_profileexists - also reads
~/.bashrcon some systems - needs a (logout and) login to reread the file
Or you create a new startup file with all your personal customizations and read it (source it) with source /path/to/myenvironment or . /path/to/myenvironment either on the command line / in your scripts or in one of the startup files mentioned above.
Some example startup files are in package bash-doc in Ubuntu/Debian (install with sudo apt-get install bash-doc) and are installed to /usr/share/doc/bash/examples/startup-files/
answered Mar 2 at 7:06
FreddyFreddy
1,429210
Thanks but I am using EC2 so I will only go into this machine once. I want to have one setup script. I have read the posts erroneously marked as duplicate and I think the answer is to execute the script with 'sudo source test.sh'
– Keith
Mar 3 at 2:40
@Keith As environment files usually don't install things, you could put all your stuff intotest.sh, make it executable and run it withsudo ./test.sh. Don't forget to add#!/bin/bash(bash) or#!/bin/sh(dash) as first line to your script. Or if you want an additional environment file, then put all your exported paths into filemyenvand runsudo bash -c ". /path/to/myenv; /path/to/test.sh"(orsudo sh -c "..."for dash). If you export the path to your script inmyenv, you could also writesudo bash -c ". /path/to/myenv; test.sh".
– Freddy
Mar 3 at 6:48
test.sh is not an environment file I just want one line in it to set up my environment during the install process. I have already tried all the things you mention but after executing the path is not set
– Keith
Mar 4 at 16:54
@Keith You can't set environment variables in a script. As soon as the script exits the variables are gone. You have to source an environment file before that, either automatically (~/.bashrcetc.) or manually.
– Freddy
Mar 4 at 16:58
Don't tell me what I can't do. :P This works "source <(sudo cat test.sh)" Now I can set up and install everything in one big script on EC2. If you can update your answer to say why only this hackish way to do it works I'll accept it.
– Keith
Mar 4 at 17:45
|
show 2 more comments
If you're using bash, then the short answer is to put your exported variables into one of the existing personal startup (or initialization) files. Variables exported in your terminal get lost when you close it. Variables exported in your script get lost when your script exits.
There are other startup files which may or may not exist, but these are the most common ones:
~/.bashrc- executed by bash for non-login shells
~/.bash_profile- executed by bash for interactive login shells
~/.profileis not read if this file exists- also reads
~/.bashrcon some systems - needs a (logout and) login to reread the file
~/.profile- executed by the command interpreter for login shells
- is not read when
~/.bash_profileexists - also reads
~/.bashrcon some systems - needs a (logout and) login to reread the file
Or you create a new startup file with all your personal customizations and read it (source it) with source /path/to/myenvironment or . /path/to/myenvironment either on the command line / in your scripts or in one of the startup files mentioned above.
Some example startup files are in package bash-doc in Ubuntu/Debian (install with sudo apt-get install bash-doc) and are installed to /usr/share/doc/bash/examples/startup-files/
answered Mar 2 at 7:06
FreddyFreddy
1,429210
Thanks but I am using EC2 so I will only go into this machine once. I want to have one setup script. I have read the posts erroneously marked as duplicate and I think the answer is to execute the script with 'sudo source test.sh'
– Keith
Mar 3 at 2:40
@Keith As environment files usually don't install things, you could put all your stuff intotest.sh, make it executable and run it withsudo ./test.sh. Don't forget to add#!/bin/bash(bash) or#!/bin/sh(dash) as first line to your script. Or if you want an additional environment file, then put all your exported paths into filemyenvand runsudo bash -c ". /path/to/myenv; /path/to/test.sh"(orsudo sh -c "..."for dash). If you export the path to your script inmyenv, you could also writesudo bash -c ". /path/to/myenv; test.sh".
– Freddy
Mar 3 at 6:48
test.sh is not an environment file I just want one line in it to set up my environment during the install process. I have already tried all the things you mention but after executing the path is not set
– Keith
Mar 4 at 16:54
@Keith You can't set environment variables in a script. As soon as the script exits the variables are gone. You have to source an environment file before that, either automatically (~/.bashrcetc.) or manually.
– Freddy
Mar 4 at 16:58
Don't tell me what I can't do. :P This works "source <(sudo cat test.sh)" Now I can set up and install everything in one big script on EC2. If you can update your answer to say why only this hackish way to do it works I'll accept it.
– Keith
Mar 4 at 17:45
|
show 2 more comments
If you're using bash, then the short answer is to put your exported variables into one of the existing personal startup (or initialization) files. Variables exported in your terminal get lost when you close it. Variables exported in your script get lost when your script exits.
There are other startup files which may or may not exist, but these are the most common ones:
~/.bashrc- executed by bash for non-login shells
~/.bash_profile- executed by bash for interactive login shells
~/.profileis not read if this file exists- also reads
~/.bashrcon some systems - needs a (logout and) login to reread the file
~/.profile- executed by the command interpreter for login shells
- is not read when
~/.bash_profileexists - also reads
~/.bashrcon some systems - needs a (logout and) login to reread the file
Or you create a new startup file with all your personal customizations and read it (source it) with source /path/to/myenvironment or . /path/to/myenvironment either on the command line / in your scripts or in one of the startup files mentioned above.
Some example startup files are in package bash-doc in Ubuntu/Debian (install with sudo apt-get install bash-doc) and are installed to /usr/share/doc/bash/examples/startup-files/
answered Mar 2 at 7:06
FreddyFreddy
1,429210
If you're using bash, then the short answer is to put your exported variables into one of the existing personal startup (or initialization) files. Variables exported in your terminal get lost when you close it. Variables exported in your script get lost when your script exits.
There are other startup files which may or may not exist, but these are the most common ones:
~/.bashrc- executed by bash for non-login shells
~/.bash_profile- executed by bash for interactive login shells
~/.profileis not read if this file exists- also reads
~/.bashrcon some systems - needs a (logout and) login to reread the file
~/.profile- executed by the command interpreter for login shells
- is not read when
~/.bash_profileexists - also reads
~/.bashrcon some systems - needs a (logout and) login to reread the file
Or you create a new startup file with all your personal customizations and read it (source it) with source /path/to/myenvironment or . /path/to/myenvironment either on the command line / in your scripts or in one of the startup files mentioned above.
Some example startup files are in package bash-doc in Ubuntu/Debian (install with sudo apt-get install bash-doc) and are installed to /usr/share/doc/bash/examples/startup-files/
answered Mar 2 at 7:06
FreddyFreddy
1,429210
edited Mar 2 at 7:53
answered Mar 2 at 7:06
FreddyFreddy
1,429210
answered Mar 2 at 7:06
FreddyFreddy
1,429210
answered Mar 2 at 7:06
FreddyFreddy
1,429210
1,429210
Thanks but I am using EC2 so I will only go into this machine once. I want to have one setup script. I have read the posts erroneously marked as duplicate and I think the answer is to execute the script with 'sudo source test.sh'
– Keith
Mar 3 at 2:40
@Keith As environment files usually don't install things, you could put all your stuff intotest.sh, make it executable and run it withsudo ./test.sh. Don't forget to add#!/bin/bash(bash) or#!/bin/sh(dash) as first line to your script. Or if you want an additional environment file, then put all your exported paths into filemyenvand runsudo bash -c ". /path/to/myenv; /path/to/test.sh"(orsudo sh -c "..."for dash). If you export the path to your script inmyenv, you could also writesudo bash -c ". /path/to/myenv; test.sh".
– Freddy
Mar 3 at 6:48
test.sh is not an environment file I just want one line in it to set up my environment during the install process. I have already tried all the things you mention but after executing the path is not set
– Keith
Mar 4 at 16:54
@Keith You can't set environment variables in a script. As soon as the script exits the variables are gone. You have to source an environment file before that, either automatically (~/.bashrcetc.) or manually.
– Freddy
Mar 4 at 16:58
Don't tell me what I can't do. :P This works "source <(sudo cat test.sh)" Now I can set up and install everything in one big script on EC2. If you can update your answer to say why only this hackish way to do it works I'll accept it.
– Keith
Mar 4 at 17:45
|
show 2 more comments
Thanks but I am using EC2 so I will only go into this machine once. I want to have one setup script. I have read the posts erroneously marked as duplicate and I think the answer is to execute the script with 'sudo source test.sh'
– Keith
Mar 3 at 2:40
@Keith As environment files usually don't install things, you could put all your stuff intotest.sh, make it executable and run it withsudo ./test.sh. Don't forget to add#!/bin/bash(bash) or#!/bin/sh(dash) as first line to your script. Or if you want an additional environment file, then put all your exported paths into filemyenvand runsudo bash -c ". /path/to/myenv; /path/to/test.sh"(orsudo sh -c "..."for dash). If you export the path to your script inmyenv, you could also writesudo bash -c ". /path/to/myenv; test.sh".
– Freddy
Mar 3 at 6:48
test.sh is not an environment file I just want one line in it to set up my environment during the install process. I have already tried all the things you mention but after executing the path is not set
– Keith
Mar 4 at 16:54
@Keith You can't set environment variables in a script. As soon as the script exits the variables are gone. You have to source an environment file before that, either automatically (~/.bashrcetc.) or manually.
– Freddy
Mar 4 at 16:58
Don't tell me what I can't do. :P This works "source <(sudo cat test.sh)" Now I can set up and install everything in one big script on EC2. If you can update your answer to say why only this hackish way to do it works I'll accept it.
– Keith
Mar 4 at 17:45
Thanks but I am using EC2 so I will only go into this machine once. I want to have one setup script. I have read the posts erroneously marked as duplicate and I think the answer is to execute the script with 'sudo source test.sh'
– Keith
Mar 3 at 2:40
Thanks but I am using EC2 so I will only go into this machine once. I want to have one setup script. I have read the posts erroneously marked as duplicate and I think the answer is to execute the script with 'sudo source test.sh'
– Keith
Mar 3 at 2:40
@Keith As environment files usually don't install things, you could put all your stuff into
test.sh, make it executable and run it with sudo ./test.sh. Don't forget to add #!/bin/bash (bash) or #!/bin/sh (dash) as first line to your script. Or if you want an additional environment file, then put all your exported paths into file myenv and run sudo bash -c ". /path/to/myenv; /path/to/test.sh" (or sudo sh -c "..." for dash). If you export the path to your script in myenv, you could also write sudo bash -c ". /path/to/myenv; test.sh".– Freddy
Mar 3 at 6:48
@Keith As environment files usually don't install things, you could put all your stuff into
test.sh, make it executable and run it with sudo ./test.sh. Don't forget to add #!/bin/bash (bash) or #!/bin/sh (dash) as first line to your script. Or if you want an additional environment file, then put all your exported paths into file myenv and run sudo bash -c ". /path/to/myenv; /path/to/test.sh" (or sudo sh -c "..." for dash). If you export the path to your script in myenv, you could also write sudo bash -c ". /path/to/myenv; test.sh".– Freddy
Mar 3 at 6:48
test.sh is not an environment file I just want one line in it to set up my environment during the install process. I have already tried all the things you mention but after executing the path is not set
– Keith
Mar 4 at 16:54
test.sh is not an environment file I just want one line in it to set up my environment during the install process. I have already tried all the things you mention but after executing the path is not set
– Keith
Mar 4 at 16:54
@Keith You can't set environment variables in a script. As soon as the script exits the variables are gone. You have to source an environment file before that, either automatically (
~/.bashrc etc.) or manually.– Freddy
Mar 4 at 16:58
@Keith You can't set environment variables in a script. As soon as the script exits the variables are gone. You have to source an environment file before that, either automatically (
~/.bashrc etc.) or manually.– Freddy
Mar 4 at 16:58
Don't tell me what I can't do. :P This works "source <(sudo cat test.sh)" Now I can set up and install everything in one big script on EC2. If you can update your answer to say why only this hackish way to do it works I'll accept it.
– Keith
Mar 4 at 17:45
Don't tell me what I can't do. :P This works "source <(sudo cat test.sh)" Now I can set up and install everything in one big script on EC2. If you can update your answer to say why only this hackish way to do it works I'll accept it.
– Keith
Mar 4 at 17:45
|
show 2 more comments
