Bash, know what board you’re running on

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How do I get the path to the directory in which the script in bash is located within the script?

#!/bin/bash

MINHADIR="caminho/para/onde/estou" # apanhar a diretoria onde estou atualmente
bash directory

2 answers

5


I don’t know if this answers the question but:

#!/bin/bash
echo "A script está em: $0"
echo "O invocador está em $PWD"

Update 1 print the absolute path of the script

To get the absolute path, we start by merging the current directory with the directory of the script ( $PWD "=" dirname $0 "/").

Then we rewrite (in this case using perl) the cases where q directory script is a relative path (./d ../../b b/c) using replacements.

So:

#!/bin/bash
printf "%s=%s/" $PWD `dirname $0` |         # formatar como "$PWD=$0/"
    perl -pe 'while(s!/[^/]+=\.\./!=!){};   # a/b=../c --> a=c
              s!.*=/|=\./?!=! ;             # a/b=/c --> =c ;  b=./c => b=c 
              s!=!/!; '

or even

#!/bin/bash
script_dir=$(printf .......e mais as outras 3 linhas... )    
echo $script_dir

  • More or less that, that is, the $0 is returning the path I used to access and execute the script, already the $PWD is returning the path where I am. The idea would be, regardless of where I am, to get the path from script, example: O seu _script_ está localizado em: /home/zuul/bash/, which is different from path used to execute it, example: O caminho utilizado para aceder ao script foi: ../../bash/. Note: If unclear, it warns that I edit the question to clarify the idea.

  • @Zuul, the implicit answer in my answer was: dirname $0 (can be absolute or relative). I assume therefore that you need the absolute path. Right? There is also the question of possible existences of symbolic links etc. that I propose to ignore.

  • Yes, absolute and symbolic ignored... Imagine the case where we intend to work with files in the location of script.

  • 1

    @Zuul, please see if this update makes sense.

0

Perhaps a more general solution is:

#!/bin/bash
PROGNAME=$(basename $0)
PROGDIR=$(readlink -m $(dirname $0))

This also works for directories with links.

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