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I have this command:
$ find $PWD -name "*.jpg" | awk '{system( "echo " $(sub(/\//, "_")) ) }'
_home/mol/Pulpit/test/1.jpg
Now the same thing, but using gsub:
$ find $PWD -name "*.jpg" | awk '{system( "echo " $(gsub(/\//, "_")) ) }'
mol@mol:~
I want to get the result:
_home_mol_Pulpit_test_1.jpg
Thank you for your help.
EDIT:
I put 'echo' to test the command:
$ find $PWD -name "*.jpg" | awk '{gsub("/", "_")} {system( "echo " mv $0 " " $0) }'
_home_mol_Pulpit_test_1.jpg _home_pic_Pulpit_test_1.jpg
mol@mol:~
I want to get the result:
$ find $PWD -name "*.jpg" | awk '{gsub("/", "_")} {system( "echo " mv $0 " " $0) }'
/home/pic/Pulpit/test/1.jpg _home_pic_Pulpit_test_1.jpg
364
In Ruby, Gsub is a method that can be called on strings. It replaces all instances of a substring with another one inside the string. Sub is short for "substitute," and G stands for "global." Think of Gsub like a "replace all" function. The general pattern is str. gsub("target string", "replacement string").
The gsub() function in R can be used to replace all occurrences of certain text within a string in R. This function uses the following basic syntax: gsub(pattern, replacement, x) where: pattern: The pattern to look for. replacement: The replacement for the pattern.
Description Generalized "gsub" and associated functions. gsubfn is an R package used for string matching, substitution and parsing.
That won't work if the string contains more than one match... try this:
echo "/x/y/z/x" | awk '{ gsub("/", "_") ; system( "echo " $0) }'
or better (if the echo isn't a placeholder for something else):
echo "/x/y/z/x" | awk '{ gsub("/", "_") ; print $0 }'
In your case you want to make a copy of the value before changing it:
echo "/x/y/z/x" | awk '{ c=$0; gsub("/", "_", c) ; system( "echo " $0 " " c )}'
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