General :: Passing PATH Through Sudo?

Jan 21, 2010

In short: how to make sudo not to flush PATH everytime?

I have some websites deployed on my server (Debian testing) written with Ruby on Rails. I use Mongrel+Nginx to host them, but there is one problem that comes when I need to restart Mongrel (e.g. after making some changes).

All sites are checked in VCS (git, but it is not important) and have owner and group set to my user, whereas Mongrel runs under the, huh, mongrel user that is severely restricted in it's rights. So Mongrel must be started under root (it can automatically change UID) or mongrel.

To manage mongrel I use mongrel_cluster gem because it allows starting or stopping any amount of Mongrel servers with just one command. But it needs the directory /var/lib/gems/1.8/bin to be in PATH: this is not enough to start it with absolute path.

Modifying PATH in root .bashrc changed nothing, tweaking sudo's env_reset and env_keep didn't either.

So the question: how to add a directory to PATH or keep user's PATH in sudo?

Update: some examples

$ env | grep PATH
$ sudo cat /etc/sudoers | egrep -v '^$|^#'
Defaults env_keep = "PATH"


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General :: Sudo Sometimes Changes PATH And Not Others?

Jan 22, 2011

If I try "shutdown" as a normal user on Debian it give the "command not found" error. OK it's not in my PATH. But if I "sudo shutdown" it works. Somehow sudo seems to change my PATH.

Do the same in Slackware however and sudo makes no difference, I get "command not found" each time.

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General :: Sudo Path Variable Error

May 28, 2010

I'm having a strange issue with the PATH variable when running the command 'sudo su'. When executing this command the PATH variable changes. No problems there, but it changes to:


Looking at this, there are two weird entries (//sbin and //bin) which should both start '/usr' instead. I'm not sure how I've managed to change this, or how a piece of software I'm using has done it (more likely it was me I expect), but could anyone suggest which file to look in to correct it? If it makes a difference the machine is running CentOS 5.

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Ubuntu :: Sudo Not Picking Up Command In PATH?

Jan 20, 2010

On my Ubuntu server I'm running into an issue that I've never seen before even though I've been using Linux for many years. Basically sudo is not finding a command located in my path. Here is a transcript illustrating the problem.

prg ~: echo $PATH
prg ~: sudo echo $PATH


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Ubuntu :: Accidentally Broke Sudo's Path?

Apr 13, 2010

When I try to run almost any command with sudo, it returns sudo: command: command not found. When I run sudo echo $path, it returns a blank line. Is there a command to set its path back to the default?

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Ubuntu :: Sudo Does Not Preserve PATH As Expected?

Jun 11, 2010

I'm attempting to add a directory to PATH so it's available when I sudo. (I do not want to sudo -i), but it's not behaving as I expect.I've added a line to add the directory to PATH in all of these files:



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Debian :: Program Path For Openvpn And Allow Sudo For Guest

Nov 8, 2015

I'm looking to allow sudo for openvpn for a user.

I cannot find the openvpn program path though, i try a 'which openvpn' command and it returns nothing! :S

What is the path? or how to allow a normal user account to run openvpn with sudo?

Solution found:

Working directories for openvpn on debian 8 are:


To add sudo capability to a guest account, run this with your admin account:

Code: Select allsudo visudo

then add the line, with your guest username substituted:

Code: Select allusername    ALL=/etc/openvpn, /usr/sbin/openvpn

tada! guest account now runs only openvpn.

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Red Hat :: Setup User's PATH Env When Sudo Command In RHEL5 ?

Dec 16, 2008

In RHEL5, the PATH of root is /sbin and /usr/sbin...., the PATH of common user has not /sbin or /usr/sbin, how to give the /sbin and /usr/sbin to a common user when he run command which sudo?

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Software :: Adding Sth - To All Users PATH Variable - Sudo Included

Aug 3, 2010

I've installed rubygems on ubuntu, but it has a known issue that the rubygems' bin/ directory is not in the PATH. I know about exporting the PATH variable, and adding it to .bashrc, but I'd like to configure it so that every user has it on his PATH, even if he tries to run it with sudo. Where should I export the PATH variable then?

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General :: Difference Between PATH=$PATH:$1 & PATH=$1:$PATH?

Jan 16, 2011

I found the following function in /etc/profile file.


1. I dont undestand what "if ! echo $PATH | /bin/grep -qE "(^|:)$1($|:)"" this if statement actually comapres??

2. Also what is the difference between PATH=$PATH:$1 & PATH=$1:$PATH

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Ubuntu Security :: Apparmor Profiles - Sudo Aa-logprof / Path To Firefox Allowed All When Asked

Jul 29, 2011

I am using FF ver 5.0.1 from here After reading [URL] I did Code: sudo aa-logprof /path to firefox Allowed all when asked. But when I try to start FF in enforce mode I get


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General :: Move A File To Some Path And Create That Path When It Doesn't Exist?

Oct 8, 2010

I use this command:


find ./ -atime +360

to figure out the files that haven't been accessed since 360 days. The command above will return results like this:


... etc

I'm taking here about tins of directories, thousands of files. I'm looking to find a command that makes me able to move the results above to another path, and to create that path once it doesn't exist like below:


mv /uploads/2010/02/some-file-name.ext /old-files/uploads/2010/02/some-file-name.ext

But I want the executed command to create this path



If it doesn't exist.

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General :: Forcing An Absolute Path Where A Relative Path Is Expected

Feb 21, 2011

I have a program that takes a relative path as input appends it to a some path string to get the actual path.

Now all I can input is the relative path. So if I want to go one level above my input will be ../mypath.

If I know the depth of the path used internally, I can use .. as many times to go to the root directory and then give the absolute path. But suppose I do not know the depth of the directory, can I construct a relative path string such that it considers it as a relative path. One way could be to have enough .. in the path string so that I can force an absolute path for some maximum depth of path.

Is there some path string syntax that I am not aware of but can achieve this?

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General :: Deleted Path Variable - How To Return To The Original Path Value

Apr 26, 2011

Experimenting with shell variables, accidentally deleted the path variable how could I return to the original path value. What kinds of problems will I have if I don't have a path variable.

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General :: Change Windows Path To Unix Path?

Sep 14, 2009

I have a path c:windowsackup I need this string to be changed into /windows/back/up I used the command -bash-3.00$ echo windackup | sed 's/\//g' but the output is windbackup

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General :: Change Absolute Path To Relative Path?

May 31, 2011

Current script:-

find . -depth -type d -name .git -printf '%h�' | while read -d "" path ; do (
cd "$path" || exit $?


How shall i go about changing the absolute path to relative path, so that /home/git/mirror/android/adb/ndk.git gets converted to /mirror/android/adb/ndk.git //echo <command> "$prefix$PWD.git" ?? - anything for relative path?

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General :: Sudo Cd /root Gives Sudo - Cd - Command Not Found

Jan 6, 2011

Kernel, Slackware 12.0



On the other hand


So, I do not understand why the notification "sudo: cd: command not found", considering cd is a bash built-in command.

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General :: What's The Difference Between Sudo Su - And Sudo -i

Jun 19, 2011

It is my understanding that they do the same: they ask for my password (if I am allowed in /etc/sudoers), and give me a login shell as root.

Is there any difference between them?

sudo su -
sudo -i

Also, what's the difference between

sudo su
sudo -s

I think that they both ask for my password, and give me a shell with my old environment variables.

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General :: Passing One Variable To Another

Jan 8, 2011

I am new to bash scripting. I want to know whether i can pass one variable to another. For example $1 represent argument1. Now if i want to get the argument 1 like USER="1" now i want $ of $USER to execute $1 so what should i do..

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General :: Passing Program Arguments To Gdb?

Nov 18, 2009

I'm using gdb to debug my program. My program requires arguments (e.g., ./prog -dfile).But if I use gdb as in gdb ./prog -dfile, gdb wants to interpret the -d argument. How do I pass an argument to my program via gdb?

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General :: Passing A Structure In A Socket?

Mar 31, 2011

So I'm trying to teach myself to write programs for unix in c. I am currently creating a program, and I need to pass a struct through a socket

The struct I want to pass has two types in it, one enum and one union of two other structs. These two other structs each contain an int and a char variablename[256] array.

gcc won't let me just pass the struct using write(pipefd[1], struct, size_of_struct) since the struct is not a char buffer. So that's my does one go about passing a struct?

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General :: Passing Parameters To Script ?

Mar 13, 2010

I have the following bash script:


Which has the name '' and works just fine.

However, i whish to be able to give the url (or any other url) as a parameter when i run the script like this: $ [url]

What should i change in my code? i have never tried passing parameters to scripts before.

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General :: Command Path Is In PATH But Bash Does Not Find The Command

Jul 12, 2011

kernel, slackware 12.0
GNU bash 3.1.17


As you can see, /usr/local/bin is in the path. However, bash does not look for nasm in /usr/local/bin.

If I am root, things go well:


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General :: Bash - Passing Commands To CLI Using A Script

Jul 31, 2011

is there any way I can pass commands to the CLI of a tool directly?

I would like to script some actions, for example:

./OpenBTS < "tmsis"

I do not need to retrieve the results (I watch it in the log file). how I could realize that? There is now way to do this using command line parameters, at least not that I found out. So it looks like I have to figure out sth myself. Maybe I could automate screen in a way to detect the prompt and "paste" my command there. Are there tools for this on Linux?

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General :: Passing SSH A Password Through Command Line?

Aug 4, 2010

I am writing a script to get hardware information of a particular UNIX machine. To do this, I ftp a shell script (commands to get h/w information) to the target machine and then use SSH to remote the remote script.With FTP, I can pass a password accepted as input the shell script. How can I pass the same password to SSH ? This is because I do not want the user to enter the password twice.

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General :: Passing A List Of Variables To A For Loop

Mar 17, 2011

I'm trying to do substitutions to a file based on passed variables.

For example, I have a file called test.txt that has 5 lines:

What I want to do is to go through that file, line by line and check for the presence of a passed variable in that line. If I have a match, then substitute and print, otherwise print line as is. My problem arises in that the number of variables is well, variable.

The code I started with was the following:


What I was hoping for was test.out to look like this:

What I get is a much longer file like this:

This makes sense after thinking about it but is there anyway to get an output like the first case?

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General :: Passing Options To A Program: What's The Convention For One Dash Vs Two?

Mar 20, 2011

Some programs will take options like this:$ someprogram -orange apple

And other programs will use something like this:

$ otherprogram --orange apple

Is there a "rule" or convention for this in Linux/Unix/OSX?

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General :: Passing An Array As Command Line Arguments?

Apr 2, 2011

how to pass an array as a command line argument in a shell script?

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General :: Passing Multiple Arguments In Shell Script?

Dec 11, 2010

The script receives multiple files as parameters and it is supposed to count the number of lines in each of them and write that number in another file.

This is my script:


while [ -n "$1" ]
lines=`cat $1 | wc -l`
echo "The number of lines in file $1 is $lines." >> lines.txt

Is there any other way to do the same thing, without using shift?

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General :: Scripting - Try To Passing Arguments To For Cycle - Inside A Function

Apr 26, 2011

The code:


Problem: I need a method to maintain the $i variable. In fact, actually, this variable get lost when executed. I think that an escape can preserve this variable and permit its execution inside the function, but I've no idea about.

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