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How to check $PATH for installed software in a bash script?

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0

1

Recently one of my bash scripts failed because cmake and zip / unzip were not installed on a system.

What would be a convenient way to check for installed packages in $PATH env?

I would like to check $PATH directly for cmake and the like since my script is running on Debian, Ubuntu, Arch, and so on. Thus, I would prefer to not use a package manager, because I would have to implement it several times using dpkg, pacman, ... based on the distribution the script is currently executed on.

bash path

share|improve this question

asked 1 hour ago

daniel451daniel451

4253721

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  If you're just looking for tools like cmake and zip then those are installed by the package manager and the binaries will be in /usr/bin unless you built them from source and put them elsewhere. If you installed them via the package manager then you can just use the package tool like rpm or dpkg-query to search for the installed packages.
  
  – Nasir Riley
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @NasirRiley yes, but the problem is that my script is running on different distributions. Hence, I would like to avoid implementing that with rpm, dpkg, pacman, ... It is quite cumbersome to maintain this by hand so I would prefer to not use different package managers.
  
  – daniel451
  50 mins ago
  

  
  
  
  

add a comment | 

0

1

Recently one of my bash scripts failed because cmake and zip / unzip were not installed on a system.

What would be a convenient way to check for installed packages in $PATH env?

I would like to check $PATH directly for cmake and the like since my script is running on Debian, Ubuntu, Arch, and so on. Thus, I would prefer to not use a package manager, because I would have to implement it several times using dpkg, pacman, ... based on the distribution the script is currently executed on.

bash path

share|improve this question

asked 1 hour ago

daniel451daniel451

4253721

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  If you're just looking for tools like cmake and zip then those are installed by the package manager and the binaries will be in /usr/bin unless you built them from source and put them elsewhere. If you installed them via the package manager then you can just use the package tool like rpm or dpkg-query to search for the installed packages.
  
  – Nasir Riley
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @NasirRiley yes, but the problem is that my script is running on different distributions. Hence, I would like to avoid implementing that with rpm, dpkg, pacman, ... It is quite cumbersome to maintain this by hand so I would prefer to not use different package managers.
  
  – daniel451
  50 mins ago
  

  
  
  
  

add a comment | 

Recently one of my bash scripts failed because cmake and zip / unzip were not installed on a system.

What would be a convenient way to check for installed packages in $PATH env?

I would like to check $PATH directly for cmake and the like since my script is running on Debian, Ubuntu, Arch, and so on. Thus, I would prefer to not use a package manager, because I would have to implement it several times using dpkg, pacman, ... based on the distribution the script is currently executed on.

bash path

share|improve this question

asked 1 hour ago

daniel451daniel451

4253721

share|improve this question

asked 1 hour ago

daniel451daniel451

4253721

share|improve this question

asked 1 hour ago

daniel451daniel451

4253721

asked 1 hour ago

daniel451daniel451

4253721

asked 1 hour ago

daniel451daniel451

4253721

1 Answer
1

active

oldest

votes

3

As mentioned in "Why not use "which"? What to use then?", the most portable way of testing whether a command is found in $PATH or not is through:

if command -v given-command > /dev/null 2>&1; then
 echo given-command is available
else
 echo given-command is not available
fi

share|improve this answer

edited 34 mins ago

Jeff Schaller

43.2k1159138

answered 1 hour ago

KusalanandaKusalananda

134k17255418

add a comment | 

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3

As mentioned in "Why not use "which"? What to use then?", the most portable way of testing whether a command is found in $PATH or not is through:

if command -v given-command > /dev/null 2>&1; then
 echo given-command is available
else
 echo given-command is not available
fi

share|improve this answer

edited 34 mins ago

Jeff Schaller

43.2k1159138

answered 1 hour ago

KusalanandaKusalananda

134k17255418

add a comment | 

3

As mentioned in "Why not use "which"? What to use then?", the most portable way of testing whether a command is found in $PATH or not is through:

if command -v given-command > /dev/null 2>&1; then
 echo given-command is available
else
 echo given-command is not available
fi

share|improve this answer

edited 34 mins ago

Jeff Schaller

43.2k1159138

answered 1 hour ago

KusalanandaKusalananda

134k17255418

add a comment | 

As mentioned in "Why not use "which"? What to use then?", the most portable way of testing whether a command is found in $PATH or not is through:

if command -v given-command > /dev/null 2>&1; then
 echo given-command is available
else
 echo given-command is not available
fi

share|improve this answer

edited 34 mins ago

Jeff Schaller

43.2k1159138

answered 1 hour ago

KusalanandaKusalananda

134k17255418

if command -v given-command > /dev/null 2>&1; then
 echo given-command is available
else
 echo given-command is not available
fi

share|improve this answer

edited 34 mins ago

Jeff Schaller

43.2k1159138

answered 1 hour ago

KusalanandaKusalananda

134k17255418

edited 34 mins ago

Jeff Schaller

43.2k1159138

edited 34 mins ago

Jeff Schaller

43.2k1159138

answered 1 hour ago

KusalanandaKusalananda

134k17255418

answered 1 hour ago

KusalanandaKusalananda

134k17255418