I have a Windows path in a bash variable as a string:
file='C:\Users\abcd\Downloads\testingFile.log'
I am trying to convert this path into a Linux path starting with /c/Users....
My attempt
The following works:
file=${file/C://c}
file=${file//\\//}
echo $file
> /c/Users/abcd/Downloads/testingFile.log
Problem
Here, I have done this for a string that contains the filepath. The reason I am asking this question is that I have to convert 20 such strings in a bash script in Ubuntu 16.04 and each time I do this I have to write 2 lines per conversion - it is taking up a lot of space!
Question
Is there a way to combine the 2 commands
file=${file/C://c}
file=${file//\\//}
into one command?
4 Answers
There would be a way to do both replacements at once using sed, but it's not necessary.
Here's how I would solve this problem:
- Put filenames in array
- Iterate over array
filenames=(
'C:\Users\abcd\Downloads\testingFile.log'
# ... add more here ...
)
for f in "${filenames[@]}"; do
f="${f/C://c}"
f="${f//\\//}"
echo "$f"
done
If you want to put the output into an array instead of printing, replace the echo line with an assignment:
filenames_out+=( "$f" )
If it's something you want to do many times, then why not create a little shell function?
win2lin () { f="${1/C://c}"; printf '%s\n' "${f//\\//}"; }
$ file='C:\Users\abcd\Downloads\testingFile.log'
$ win2lin "$file"
/c/Users/abcd/Downloads/testingFile.log
$
$ file='C:\Users\pqrs\Documents\foobar'
$ win2lin "$file"
/c/Users/pqrs/Documents/foobar
You would be able to achieve this in one line using sed
file="$(echo "$file" | sed -r -e 's|^C:|/c|' -e 's|\\|/|g')"
Note the two patterns must remain separate nonetheless as the matches are replaced by different substitutions.
Is this question still open to new suggestions? If so, would this help you?
$ file="/$(echo 'C:\Users\abcd\Downloads\testingFile.log'|tr '\\' '/')"
$ echo $file
/C:/Users/abcd/Downloads/testingFile.log
Oh, and in case the C must be cast to lowercase:
file="/$(echo 'C:\Users\abcd\Downloads\testingFile.log'|tr '^C' 'c'|tr '\\' '/')"
As an overview:
$ file='C:\Users\abcd\Downloads\testingFile.log'
$ echo $file
C:\Users\abcd\Downloads\testingFile.log
$ file="/$(echo $file|tr '^C' 'c'|tr '\\' '/')"
$ echo $file
/c:/Users/abcd/Downloads/testingFile.log
