Extract repository name from GitHub url in bash

Question

Given ANY GitHub repository url string like:

git://github.com/some-user/my-repo.git

or

git@github.com:some-user/my-repo.git

or

https://github.com/some-user/my-repo.git

What is the best way in bash to extract the repository name my-repo from any of the following strings? The solution MUST work for all types of urls specified above.

Thanks.

score 25 · Accepted Answer · answered Aug 14 '12 at 04:12

25

$ url=git://github.com/some-user/my-repo.git
$ basename=$(basename $url)
$ echo $basename
my-repo.git
$ filename=${basename%.*}
$ echo $filename
my-repo
$ extension=${basename##*.}
$ echo $extension
git

answered Aug 14 '12 at 04:12

quanta

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Thanks, trying to make it a one liner, but not working. REPO_NAME=${\`basename $REPO_URL\`%.*} – Justin Aug 14 '12 at 04:17
2

`echo $(basename "$url" ".${url##*.}")`. – quanta Aug 14 '12 at 06:31
+1. Is there anything similar to get the **hostname**, i.e. github.com, instead, @quanta? – chepukha Mar 31 '15 at 02:19

womble · Answer 2 · 2012-08-14T04:52:48.883

23

I'd go with basename $URL .git.

edited Aug 14 '12 at 04:52

answered Aug 14 '12 at 03:58

womble

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1

the best answer. The shortest as well – Andrey Regentov Apr 22 '20 at 09:23

score 14 · Answer 3 · edited Feb 02 '22 at 16:28

Old post, but I faced the same problem recently.

The regex ^(https|git)(:\/\/|@)([^\/:]+)[\/:]([^\/:]+)\/(.+).git$ works for the three types of URL.

#!/bin/bash

# url="git://github.com/some-user/my-repo.git"
# url="https://github.com/some-user/my-repo.git"
url="git@github.com:some-user/my-repo.git"

re="^(https|git)(:\/\/|@)([^\/:]+)[\/:]([^\/:]+)\/(.+)(.git)*$"

if [[ $url =~ $re ]]; then    
    protocol=${BASH_REMATCH[1]}
    separator=${BASH_REMATCH[2]}
    hostname=${BASH_REMATCH[3]}
    user=${BASH_REMATCH[4]}
    repo=${BASH_REMATCH[5]}
fi

Explaination (see it in action on regex101):

^ matches the start of a string
(https|git) matches and captures the characters https or git
(:\/\/|@) matches and captures the characters :// or @
([^\/:]+) matches and captures one character or more that is not / nor :
[\/:] matches one character that is / or :
([^\/:]+) matches and captures one character or more that is not / nor :, yet again
[\/:] matches the character /
(.+) matches and captures one character or more
(.git)* matches optional .git suffix at the end
$ matches the end of a string

This if far from perfect, as something like https@github.com:some-user/my-repo.git would match, but I think it's fine enough for extraction.

@kenn: then they'd not be a valid remote for git, however. See https://git-scm.com/docs/git-push#URLS. — Martijn Pieters, Feb 09 '22 at 12:06
I'm using an expanded version (play with it on [regex101](https://regex101.com/r/liVozi/1): `^((https?|ssh|git|ftps?):\/\/)?(([^\/@]+)@)?([^\/:]+)[\/:]([^\/:]+)\/(.+).git\/?$`, which better matches [the official spec for URLs](https://git-scm.com/docs/git-push#URLS). Group 2 is the scheme, if missing the default is `ssh`. — Martijn Pieters, Feb 09 '22 at 12:13

score 6 · Answer 4 · answered Apr 13 '16 at 15:36

6

Summing up:

Get url without (optional) suffix:
```
url_without_suffix="${url%.*}"
```

Get repository name:

reponame="$(basename "${url_without_suffix}")"

Get user (host) name afterwards:

hostname="$(basename "${url_without_suffix%/${reponame}}")"

answered Apr 13 '16 at 15:36

hypnoglow

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score 1 · Answer 5 · answered Feb 22 '16 at 13:41

1

use regular expression: /([^/]+)\.git$/

answered Feb 22 '16 at 13:41

Aaron Shen

131
3

score 0 · Answer 6 · answered Feb 13 '20 at 22:51

basename is my favorite, but you can also use sed:

url=git://github.com/some-user/my-repo.git
reponame="$(echo $url | sed -r 's/.+\/([^.]+)(\.git)?/\1/')"
# reponame = "my-repo"

"sed" will delete all text until the last / + the .git extension (if exists), and will retain the match of group \1 which is everything except dot ([^.]+)

score 0 · Answer 7 · answered Sep 02 '20 at 13:55

Using Hitcham's awesome answer above allowed me to come up with this, using sed to output exactly what needed: org/reponame with sed.

output = echo ${git_url} | sed -nr  's/^(https|git)(:\/\/|@)([^\/:]+)[\/:]([^\/:]+)\/(.+).git$$/\4\/\3/p'`

Works well in ubuntu, doesn't work for the sed available by default on macosx.

Hemanth Bollamreddi · Answer 8 · 2023-01-07T05:23:31.673

0

A slight modification to @Hicham's answer

^(https|git)(:\/\/|@)([^\/:]+)[\/:]([^\/:]+)\/(.+?)(\.git)?$

Will extract out the .git suffix as well.

edited Jan 07 '23 at 05:23

answered Jan 07 '23 at 05:23

Hemanth Bollamreddi

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1

score 0 · Answer 9 · answered Sep 01 '23 at 12:53

After fiddling half a day in regex101 and using input from @womble and the others.. I came up with this, which also has the capture names to denote what is handled where.. It may help even me in the neer future :P

/^((?<protocol>https?|ssh|git|ftps?):\/\/)?((?<user>[^\/@]+)@)?(?<host>[^\/:]+)[\/:](?<port>[^\/:]+)\/(?<path>.+\/)?(?<repo>.+?)(?<suffix>\.git[\/]?)?$/

it basically allows to use the repo name (see part ?) in a

.../reponame.git, .../reponame.git/, .../reponame and .../reponame/

repo url, as it handles the optional .git

score 0 · Answer 10 · edited Nov 09 '18 at 18:38

0

basename $git_repo_url | tr -d ".git"

edited Nov 09 '18 at 18:38

Michael Hampton

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answered Nov 09 '18 at 18:28

jit

1

Extract repository name from GitHub url in bash

10 Answers10