Most efficient if statement in .zshrc to check whether Linux OS is running on WSL?

In my .zshrc file I conditionally set my PATH variable depending on whether I'm running on Linux or macOS - I'm now trying to figure out if there's a way I can efficiently detect from my .zshrc if I'm working on Linux running on WSL.

I'm wondering if I can somehow check for the existence of /mnt/c/Program Files or similar - but figure there must be a better way?

Example of my current .zshrc:

PATH="/usr/local/sbin:$PATH" 

if ! [[ "$OSTYPE" == "darwin"* ]]; then

  export PATH="$HOME/.nodenv/bin:$HOME/.rbenv/bin:$PATH"

fi

eval "$(rbenv init -)"

eval "$(nodenv init -)"

PATH="$HOME/.bin:$PATH"

if [[ "$OSTYPE" == "darwin"* ]]; then

  export ANDROID_SDK_ROOT="$HOME/Library/Android/sdk"

  export PATH="$PATH:$ANDROID_SDK_ROOT/tools:$ANDROID_SDK_ROOT/tools/bin:$ANDROID_SDK_ROOT/platform-tools:$ANDROID_SDK_ROOT/build-tools:$ANDROID_SDK_ROOT/tools/lib/x86_64"

  export PATH="$PATH:/usr/local/share/dotnet"

fi

If anyone has any better ideas than somehow checking for the existence of /mnt/c/Program Files I'd very much appreciate it!

asked Jan 1 at 15:21

Michael Smith

66211

uname -r contains Microsoft. github.com/KittyKatt/screenFetch/blob/master/screenfetch-dev

– Biswapriyo
Jan 1 at 16:28

Thanks - that was exactly what I needed - popped an answer to my own question in below.

– Michael Smith
Jan 1 at 18:03

add a comment |

I'm wondering if I can somehow check for the existence of /mnt/c/Program Files or similar - but figure there must be a better way?

Example of my current .zshrc:

PATH="/usr/local/sbin:$PATH" 

if ! [[ "$OSTYPE" == "darwin"* ]]; then

  export PATH="$HOME/.nodenv/bin:$HOME/.rbenv/bin:$PATH"

fi

eval "$(rbenv init -)"

eval "$(nodenv init -)"

PATH="$HOME/.bin:$PATH"

if [[ "$OSTYPE" == "darwin"* ]]; then

  export ANDROID_SDK_ROOT="$HOME/Library/Android/sdk"

  export PATH="$PATH:$ANDROID_SDK_ROOT/tools:$ANDROID_SDK_ROOT/tools/bin:$ANDROID_SDK_ROOT/platform-tools:$ANDROID_SDK_ROOT/build-tools:$ANDROID_SDK_ROOT/tools/lib/x86_64"

  export PATH="$PATH:/usr/local/share/dotnet"

fi

If anyone has any better ideas than somehow checking for the existence of /mnt/c/Program Files I'd very much appreciate it!

asked Jan 1 at 15:21

Michael Smith

66211

uname -r contains Microsoft. github.com/KittyKatt/screenFetch/blob/master/screenfetch-dev

– Biswapriyo
Jan 1 at 16:28

Thanks - that was exactly what I needed - popped an answer to my own question in below.

– Michael Smith
Jan 1 at 18:03

add a comment |

I'm wondering if I can somehow check for the existence of /mnt/c/Program Files or similar - but figure there must be a better way?

Example of my current .zshrc:

PATH="/usr/local/sbin:$PATH" 

if ! [[ "$OSTYPE" == "darwin"* ]]; then

  export PATH="$HOME/.nodenv/bin:$HOME/.rbenv/bin:$PATH"

fi

eval "$(rbenv init -)"

eval "$(nodenv init -)"

PATH="$HOME/.bin:$PATH"

if [[ "$OSTYPE" == "darwin"* ]]; then

  export ANDROID_SDK_ROOT="$HOME/Library/Android/sdk"

  export PATH="$PATH:$ANDROID_SDK_ROOT/tools:$ANDROID_SDK_ROOT/tools/bin:$ANDROID_SDK_ROOT/platform-tools:$ANDROID_SDK_ROOT/build-tools:$ANDROID_SDK_ROOT/tools/lib/x86_64"

  export PATH="$PATH:/usr/local/share/dotnet"

fi

If anyone has any better ideas than somehow checking for the existence of /mnt/c/Program Files I'd very much appreciate it!

asked Jan 1 at 15:21

Michael Smith

66211

I'm wondering if I can somehow check for the existence of /mnt/c/Program Files or similar - but figure there must be a better way?

Example of my current .zshrc:

PATH="/usr/local/sbin:$PATH" 

if ! [[ "$OSTYPE" == "darwin"* ]]; then

  export PATH="$HOME/.nodenv/bin:$HOME/.rbenv/bin:$PATH"

fi

eval "$(rbenv init -)"

eval "$(nodenv init -)"

PATH="$HOME/.bin:$PATH"

if [[ "$OSTYPE" == "darwin"* ]]; then

  export ANDROID_SDK_ROOT="$HOME/Library/Android/sdk"

  export PATH="$PATH:$ANDROID_SDK_ROOT/tools:$ANDROID_SDK_ROOT/tools/bin:$ANDROID_SDK_ROOT/platform-tools:$ANDROID_SDK_ROOT/build-tools:$ANDROID_SDK_ROOT/tools/lib/x86_64"

  export PATH="$PATH:/usr/local/share/dotnet"

fi

If anyone has any better ideas than somehow checking for the existence of /mnt/c/Program Files I'd very much appreciate it!

linux zsh windows-subsystem-for-linux zshrc

asked Jan 1 at 15:21

Michael Smith

66211

asked Jan 1 at 15:21

Michael Smith

66211

asked Jan 1 at 15:21

Michael Smith

66211

asked Jan 1 at 15:21

Michael Smith

66211

asked Jan 1 at 15:21

Michael Smith

66211

uname -r contains Microsoft. github.com/KittyKatt/screenFetch/blob/master/screenfetch-dev

– Biswapriyo
Jan 1 at 16:28

Thanks - that was exactly what I needed - popped an answer to my own question in below.

– Michael Smith
Jan 1 at 18:03

add a comment |

uname -r contains Microsoft. github.com/KittyKatt/screenFetch/blob/master/screenfetch-dev

– Biswapriyo
Jan 1 at 16:28

Thanks - that was exactly what I needed - popped an answer to my own question in below.

– Michael Smith
Jan 1 at 18:03

uname -r contains Microsoft. github.com/KittyKatt/screenFetch/blob/master/screenfetch-dev

– Biswapriyo
Jan 1 at 16:28

Thanks - that was exactly what I needed - popped an answer to my own question in below.

– Michael Smith
Jan 1 at 18:03

add a comment |

3 Answers
3

active

oldest

votes

There are many possible way to check WSL in any shell. Most reliable ways are:

From uname -r command output.

From /proc/version file.

From /proc/sys/kernel/osrelease file.

#!/bin/bash



if uname -r |grep -q 'Microsoft' ; then

    echo True

fi



if grep -q -i 'Microsoft' /proc/version ; then

    echo True

fi



if grep -q -i 'Microsoft' /proc/sys/kernel/osrelease ; then

    echo True

fi

Also there are many file existence can be checked with shell script. For example, only WSL has 1. /dev/lxss 2. /bin/wslpath 3. /sbin/mount.drvfs 4. /proc/sys/fs/binfmt_misc/WSLInterop 5. /etc/wsl.conf files but GNU/Linux distributions has not.

See more:

screenFetch

netfetch

answered Jan 1 at 19:41

Biswapriyo

5041418

add a comment |

In WSL, there is a special file for checking interoperability called /proc/sys/fs/binfmt_misc/WSLInterop which is WSL specific file. You can check using the following command:

#!/bin/bash

if [ -f /proc/sys/fs/binfmt_misc/WSLInterop ]; then

  echo True

fi

or more simple one-line code(in bash):

[ -f /proc/sys/fs/binfmt_misc/WSLInterop ]

This will return exit code 0 if true, exit code 1 if false.

answered Jan 2 at 12:21

Patrick Wu J.M.

214

add a comment |

Thanks to Biswapiryo's comment - I came up with this solution to detect WSL:

if [[ $(uname -r)] == ^*Microsoft$ ]]; then

  # Code goes here

fi

answered Jan 1 at 18:03

Michael Smith

66211

add a comment |

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3 Answers
3

active

oldest

votes

3 Answers
3

active

oldest

votes

There are many possible way to check WSL in any shell. Most reliable ways are:

From uname -r command output.

From /proc/version file.

From /proc/sys/kernel/osrelease file.

#!/bin/bash



if uname -r |grep -q 'Microsoft' ; then

    echo True

fi



if grep -q -i 'Microsoft' /proc/version ; then

    echo True

fi



if grep -q -i 'Microsoft' /proc/sys/kernel/osrelease ; then

    echo True

fi

See more:

screenFetch

netfetch

answered Jan 1 at 19:41

Biswapriyo

5041418

add a comment |

There are many possible way to check WSL in any shell. Most reliable ways are:

From uname -r command output.

From /proc/version file.

From /proc/sys/kernel/osrelease file.

#!/bin/bash



if uname -r |grep -q 'Microsoft' ; then

    echo True

fi



if grep -q -i 'Microsoft' /proc/version ; then

    echo True

fi



if grep -q -i 'Microsoft' /proc/sys/kernel/osrelease ; then

    echo True

fi

See more:

screenFetch

netfetch

answered Jan 1 at 19:41

Biswapriyo

5041418

add a comment |

There are many possible way to check WSL in any shell. Most reliable ways are:

From uname -r command output.

From /proc/version file.

From /proc/sys/kernel/osrelease file.

#!/bin/bash



if uname -r |grep -q 'Microsoft' ; then

    echo True

fi



if grep -q -i 'Microsoft' /proc/version ; then

    echo True

fi



if grep -q -i 'Microsoft' /proc/sys/kernel/osrelease ; then

    echo True

fi

See more:

screenFetch

netfetch

answered Jan 1 at 19:41

Biswapriyo

5041418

There are many possible way to check WSL in any shell. Most reliable ways are:

From uname -r command output.

From /proc/version file.

From /proc/sys/kernel/osrelease file.

#!/bin/bash



if uname -r |grep -q 'Microsoft' ; then

    echo True

fi



if grep -q -i 'Microsoft' /proc/version ; then

    echo True

fi



if grep -q -i 'Microsoft' /proc/sys/kernel/osrelease ; then

    echo True

fi

See more:

screenFetch

netfetch

answered Jan 1 at 19:41

Biswapriyo

5041418

answered Jan 1 at 19:41

Biswapriyo

5041418

answered Jan 1 at 19:41

Biswapriyo

5041418

answered Jan 1 at 19:41

Biswapriyo

5041418

add a comment |

In WSL, there is a special file for checking interoperability called /proc/sys/fs/binfmt_misc/WSLInterop which is WSL specific file. You can check using the following command:

#!/bin/bash

if [ -f /proc/sys/fs/binfmt_misc/WSLInterop ]; then

  echo True

fi

or more simple one-line code(in bash):

[ -f /proc/sys/fs/binfmt_misc/WSLInterop ]

This will return exit code 0 if true, exit code 1 if false.

answered Jan 2 at 12:21

Patrick Wu J.M.

214

add a comment |

In WSL, there is a special file for checking interoperability called /proc/sys/fs/binfmt_misc/WSLInterop which is WSL specific file. You can check using the following command:

#!/bin/bash

if [ -f /proc/sys/fs/binfmt_misc/WSLInterop ]; then

  echo True

fi

or more simple one-line code(in bash):

[ -f /proc/sys/fs/binfmt_misc/WSLInterop ]

This will return exit code 0 if true, exit code 1 if false.

answered Jan 2 at 12:21

Patrick Wu J.M.

214

add a comment |

In WSL, there is a special file for checking interoperability called /proc/sys/fs/binfmt_misc/WSLInterop which is WSL specific file. You can check using the following command:

#!/bin/bash

if [ -f /proc/sys/fs/binfmt_misc/WSLInterop ]; then

  echo True

fi

or more simple one-line code(in bash):

[ -f /proc/sys/fs/binfmt_misc/WSLInterop ]

This will return exit code 0 if true, exit code 1 if false.

answered Jan 2 at 12:21

Patrick Wu J.M.

214

In WSL, there is a special file for checking interoperability called /proc/sys/fs/binfmt_misc/WSLInterop which is WSL specific file. You can check using the following command:

#!/bin/bash

if [ -f /proc/sys/fs/binfmt_misc/WSLInterop ]; then

  echo True

fi

or more simple one-line code(in bash):

[ -f /proc/sys/fs/binfmt_misc/WSLInterop ]

This will return exit code 0 if true, exit code 1 if false.

answered Jan 2 at 12:21

Patrick Wu J.M.

214

answered Jan 2 at 12:21

Patrick Wu J.M.

214

answered Jan 2 at 12:21

Patrick Wu J.M.

214

answered Jan 2 at 12:21

Patrick Wu J.M.

214

add a comment |

Thanks to Biswapiryo's comment - I came up with this solution to detect WSL:

if [[ $(uname -r)] == ^*Microsoft$ ]]; then

  # Code goes here

fi

answered Jan 1 at 18:03

Michael Smith

66211

add a comment |

Thanks to Biswapiryo's comment - I came up with this solution to detect WSL:

if [[ $(uname -r)] == ^*Microsoft$ ]]; then

  # Code goes here

fi

answered Jan 1 at 18:03

Michael Smith

66211

add a comment |

Thanks to Biswapiryo's comment - I came up with this solution to detect WSL:

if [[ $(uname -r)] == ^*Microsoft$ ]]; then

  # Code goes here

fi

answered Jan 1 at 18:03

Michael Smith

66211

Thanks to Biswapiryo's comment - I came up with this solution to detect WSL:

if [[ $(uname -r)] == ^*Microsoft$ ]]; then

  # Code goes here

fi

answered Jan 1 at 18:03

Michael Smith

66211

answered Jan 1 at 18:03

Michael Smith

66211

answered Jan 1 at 18:03

Michael Smith

66211

answered Jan 1 at 18:03

Michael Smith

66211

add a comment |

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