Sstrhsrtj

I have a script to copy permissions which works fine, being the interesting line this one:

...

bash commands.sh $PAM_USER "medium" /bin/{ls,rm,bash,nano,mkdir,kill,ln,ps,grep,sed} /usr/bin/{vim,touch,java,python,gcc,awk,make}

...

commands.sh has a loop which reads through all permissions listed and copies them to a specified directory.
Problem comes when I try to do the same thing reading the permissions from a config file.

My config file contains the following:

MEDIUM_PERMISSIONS_BIN=/bin/{ls,rm,bash,nano,mkdir,kill,ln,ps,grep,sed}

MEDIUM_PERMISSIONS_USR_BIN=/usr/bin/{vim,touch,java,python,gcc,awk,make}

MEDIUM_ENVIROMENT_LIFESPAN=midnight

MEDIUM_PERSISTENT_HOME=true

Note: the last two configurations are for something different, for now I'm trying to read the first two lines properly.

I add the config file to the previous script and try to execute the following:

source /etc/users/config.cfg

...

 bash commands.sh $PAM_USER "medium" $MEDIUM_PERMISSIONS_BIN $MEDIUM_PERMISSIONS_USR_BIN

...

The problem is that the loop reads it as such:

loop: /bin/{ls,rm,bash,nano,mkdir,kill,ln,ps,grep,sed}

loop: /usr/bin/{vim,touch,java,python,gcc,awk,make}

when previously it used to read it as /bin/ls, /bin/rm, /bin/rm and so on, hence the loop working with the first version as it is able to find those commands, but not on the second version sisnce the output specified previously is incorrect.

I've read through the sed and awk commands but I'm quite new to this and can't get them to work.

How can I read the permissions from my config file as if I was introducing them directly like in the first version?

Thanks

edit: commands.sh code:

#!/bin/bash



CHROOT="/users/$2/$1"

if [ ! -d "$CHROOT/home/$1" ]; then

    mkdir -p "$CHROOT/home/$1"

fi



for i in $( ldd $* | grep -v dynamic | cut -d " " -f 3 | sed 's/://' | sort | uniq )

do

    cp -v --parents $i $CHROOT

done



#ARCH amd64

if [ -f /lib64/ld-linux-x86-64.so.2 ]; then

    cp --parents /lib64/ld-linux-x86-64.so.2 /$CHROOT

fi



#ARCH i386

if [ -f /lib/ld-linux.so.2 ]; then

    cp --parents /lib/ld-linux.so.2 /$CHROOT

fi



clear

cd

Comment: I removed all the debugging echoes. This code is pretty much a copy from a code you can find here: https://linuxconfig.org/how-to-automatically-chroot-jail-selected-ssh-user-logins

You are trying to define an array variable but are using the format for a string:

## This will define a string variable

$ MEDIUM_PERMISSIONS_BIN=/bin/{ls,rm,bash,nano,mkdir,kill,ln,ps,grep,sed}

$ echo $MEDIUM_PERMISSIONS_BIN

/bin/{ls,rm,bash,nano,mkdir,kill,ln,ps,grep,sed}



## The parentheses tell the shell this is an array

$ MEDIUM_PERMISSIONS_BIN=(/bin/{ls,rm,bash,nano,mkdir,kill,ln,ps,grep,sed})

$ echo $MEDIUM_PERMISSIONS_BIN  ## the 1st element of the array

/bin/ls

$ echo ${MEDIUM_PERMISSIONS_BIN[@]} ## the entire array

/bin/ls /bin/rm /bin/bash /bin/nano /bin/mkdir /bin/kill /bin/ln /bin/ps /bin/grep /bin/sed

So just change your config file to:

MEDIUM_PERMISSIONS_BIN=(/bin/{ls,rm,bash,nano,mkdir,kill,ln,ps,grep,sed})

MEDIUM_PERMISSIONS_USR_BIN=(/usr/bin/{vim,touch,java,python,gcc,awk,make})

MEDIUM_ENVIROMENT_LIFESPAN=midnight

MEDIUM_PERSISTENT_HOME=true

And then, in your script, use "${MEDIUM_PERMISSIONS_BIN[@]}".