Shell script to set environment variables

Question

I wish to write a shell script to export variables   Below I have listed the script    echo  Perform Operation in su mode  export ARCH arm echo  Export ARCH arm Executed  export PATH   home linux Practise linux-devkit bin   PATH   echo  Export path done  export CROSS COMPILE   home linux Practise linux-devkit bin arm-arago-linux-gnueabi-   echo  Export CROSS COMPILE done    But this doesn t seem to work properly  I have to individually execute the commands at the shell prompt instead

User · Answer

You need to run the script as source or the shorthand    source   myscript sh   or        myscript sh   This will run within the existing shell  ensuring any variables created or modified by the script will be available after the script completes    Running the script just using the filename will execute the script in a separate subshell

User · Answer

I cannot solve it with source   myscript sh  It says the source not found error  Failed also when using     myscript sh  It gives can t open myscript sh   So my option is put it in a text file to be called in the next script      bin sh echo  Perform Operation in su mode  echo  ARCH arm   gt  gt  environment txt echo  Export ARCH arm Executed  export PATH   home linux Practise linux-devkit bin   PATH  echo  Export path done  export  CROSS COMPILE   home linux Practise linux-devkit bin arm-arago-linux-gnueabi-     What s next to -    gt  gt  environment txt echo  Export CROSS COMPILE done    continue your compilation commands here       Tnen call it whenever is needed   while read -r line  do     line   sed -e  s    space          lt  lt  lt   line       var  echo  line   cut -d     -f1   test   echo  var      if   -z    test     then eval export   line  fi done  lt environment txt

User · Answer

Please show us more parts of the script and tell us what commands you had to individually execute and want to simply   Meanwhile you have to use double quotes not single quote to expand variables   export PATH   home linux Practise linux-devkit bin   PATH    Semicolons at the end of a single command are also unnecessary   So far      bin sh echo  Perform Operation in su mode  export ARCH arm echo  Export ARCH arm Executed  export PATH   home linux Practise linux-devkit bin   PATH  echo  Export path done  export CROSS COMPILE   home linux Practise linux-devkit bin arm-arago-linux-gnueabi-     What s next to -  echo  Export CROSS COMPILE done    continue your compilation commands here       For su you can run it with   su -c  sh  path to script sh      Note  The OP was not explicitly asking for steps on how to create export variables in an interactive shell using a shell script   He only asked his script to be assessed at most   He didn t mention details on how his script would be used   It could have been by using   or source from the interactive shell   It could have been a standalone scipt  or it could have been source d from another script   Environment variables are not specific to interactive shells   This answer solved his problem

User · Answer

Run the script as source  to run in debug mode as well  source    myscript sh

[shell] Shell script to set environment variables

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