How do I check if a file exists by trimming a given string?
Lets say I have the following files Foo-Bar1.mp3 Foo-Bar2.jpg Foo-Bar1.mp3 Foo-Bar1.mp4
I want to download them so they are in a url like www.example.com/1/Foo%20-Bar1.mp3
I want to cut the URL so that I can use it to check if the file exists before I download it
if [ ! -f Foo-Bar1.mp3 ]; then
#Download it
fi`
bash terminal
asked Nov 22 '18 at 15:40
Bret JosephBret Joseph
8410
add a comment |
Lets say I have the following files Foo-Bar1.mp3 Foo-Bar2.jpg Foo-Bar1.mp3 Foo-Bar1.mp4
I want to download them so they are in a url like www.example.com/1/Foo%20-Bar1.mp3
I want to cut the URL so that I can use it to check if the file exists before I download it
if [ ! -f Foo-Bar1.mp3 ]; then
#Download it
fi`
bash terminal
asked Nov 22 '18 at 15:40
Bret JosephBret Joseph
8410
add a comment |
Lets say I have the following files Foo-Bar1.mp3 Foo-Bar2.jpg Foo-Bar1.mp3 Foo-Bar1.mp4
I want to download them so they are in a url like www.example.com/1/Foo%20-Bar1.mp3
I want to cut the URL so that I can use it to check if the file exists before I download it
if [ ! -f Foo-Bar1.mp3 ]; then
#Download it
fi`
bash terminal
asked Nov 22 '18 at 15:40
Bret JosephBret Joseph
8410
Lets say I have the following files Foo-Bar1.mp3 Foo-Bar2.jpg Foo-Bar1.mp3 Foo-Bar1.mp4
I want to download them so they are in a url like www.example.com/1/Foo%20-Bar1.mp3
I want to cut the URL so that I can use it to check if the file exists before I download it
if [ ! -f Foo-Bar1.mp3 ]; then
#Download it
fi`
bash terminal
bash terminal
asked Nov 22 '18 at 15:40
Bret JosephBret Joseph
8410
asked Nov 22 '18 at 15:40
Bret JosephBret Joseph
8410
asked Nov 22 '18 at 15:40
Bret JosephBret Joseph
8410
asked Nov 22 '18 at 15:40
Bret JosephBret Joseph
8410
asked Nov 22 '18 at 15:40
Bret JosephBret Joseph
8410
8410
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
You can use parameter expansion to accomplish this :
$ url='www.example.com/1/Foo%20-Bar1.mp3'
$ name=${url##*/}
$ echo $name
Foo%20-Bar1.mp3
$ echo ${name/%20/}
Foo-Bar1.mp3
Regards!
Note - As noted by @oguzismail you can use echo -e ${name//%/x} to decode each url character.
answered Nov 22 '18 at 15:54
Matias BarriosMatias Barrios
1,547317
3
You can useecho -e ${name//%/\x}to decode every%encoded char.
– oguzismail
Nov 22 '18 at 15:57
1
Nice! Thanks for the tip. Im adding your contribution.
– Matias Barrios
Nov 22 '18 at 16:00
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can use parameter expansion to accomplish this :
$ url='www.example.com/1/Foo%20-Bar1.mp3'
$ name=${url##*/}
$ echo $name
Foo%20-Bar1.mp3
$ echo ${name/%20/}
Foo-Bar1.mp3
Regards!
Note - As noted by @oguzismail you can use echo -e ${name//%/x} to decode each url character.
answered Nov 22 '18 at 15:54
Matias BarriosMatias Barrios
1,547317
3
You can useecho -e ${name//%/\x}to decode every%encoded char.
– oguzismail
Nov 22 '18 at 15:57
1
Nice! Thanks for the tip. Im adding your contribution.
– Matias Barrios
Nov 22 '18 at 16:00
add a comment |
You can use parameter expansion to accomplish this :
$ url='www.example.com/1/Foo%20-Bar1.mp3'
$ name=${url##*/}
$ echo $name
Foo%20-Bar1.mp3
$ echo ${name/%20/}
Foo-Bar1.mp3
Regards!
Note - As noted by @oguzismail you can use echo -e ${name//%/x} to decode each url character.
answered Nov 22 '18 at 15:54
Matias BarriosMatias Barrios
1,547317
3
You can useecho -e ${name//%/\x}to decode every%encoded char.
– oguzismail
Nov 22 '18 at 15:57
1
Nice! Thanks for the tip. Im adding your contribution.
– Matias Barrios
Nov 22 '18 at 16:00
add a comment |
You can use parameter expansion to accomplish this :
$ url='www.example.com/1/Foo%20-Bar1.mp3'
$ name=${url##*/}
$ echo $name
Foo%20-Bar1.mp3
$ echo ${name/%20/}
Foo-Bar1.mp3
Regards!
Note - As noted by @oguzismail you can use echo -e ${name//%/x} to decode each url character.
answered Nov 22 '18 at 15:54
Matias BarriosMatias Barrios
1,547317
You can use parameter expansion to accomplish this :
$ url='www.example.com/1/Foo%20-Bar1.mp3'
$ name=${url##*/}
$ echo $name
Foo%20-Bar1.mp3
$ echo ${name/%20/}
Foo-Bar1.mp3
Regards!
Note - As noted by @oguzismail you can use echo -e ${name//%/x} to decode each url character.
answered Nov 22 '18 at 15:54
Matias BarriosMatias Barrios
1,547317
edited Nov 22 '18 at 16:01
answered Nov 22 '18 at 15:54
Matias BarriosMatias Barrios
1,547317
answered Nov 22 '18 at 15:54
Matias BarriosMatias Barrios
1,547317
answered Nov 22 '18 at 15:54
Matias BarriosMatias Barrios
1,547317
1,547317
3
You can useecho -e ${name//%/\x}to decode every%encoded char.
– oguzismail
Nov 22 '18 at 15:57
1
Nice! Thanks for the tip. Im adding your contribution.
– Matias Barrios
Nov 22 '18 at 16:00
add a comment |
3
You can useecho -e ${name//%/\x}to decode every%encoded char.
– oguzismail
Nov 22 '18 at 15:57
1
Nice! Thanks for the tip. Im adding your contribution.
– Matias Barrios
Nov 22 '18 at 16:00
3
3
You can use
echo -e ${name//%/\x} to decode every % encoded char.– oguzismail
Nov 22 '18 at 15:57
You can use
echo -e ${name//%/\x} to decode every % encoded char.– oguzismail
Nov 22 '18 at 15:57
1
1
Nice! Thanks for the tip. Im adding your contribution.
– Matias Barrios
Nov 22 '18 at 16:00
Nice! Thanks for the tip. Im adding your contribution.
– Matias Barrios
Nov 22 '18 at 16:00
add a comment |
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