CODEWITHSUNDEEP
linuxcommand-linealiaspwd
Haddly
Haddly

Reputation: 89

How to create an alias with relative pwd + string

I want to set an alias to switch from two WordPress instances on the CLI. Each of them have the same paths except for the names of their respective sites e.g:

srv/deployment/work/sitename1/wp-content/uploads/2018/

srv/deployment/work/sitename2/wp-content/uploads/2018/

How do I create an alias that takes the "pwd" of the current location and cd s to exactly the same location on the other site?

Upvotes: 0

Views: 236

Answers (2)

ChrisH
ChrisH

Reputation: 26

How about a bash function instead of an alias, gives you a little more freedom.

Save this bash function to a file like switchsite.sh. Modify the variables to your needs. Then load it into your bash with:

source switchsite.sh

If you are in /srv/deployment/work/sitename1/wp-content/uploads/2018, do

switchsite sitename2

and you will be in /srv/deployment/work/sitename2/wp-content/uploads/2018.

switchsite() { 
    # modify this to reflect where your sites are located, no trailing slash
    where_my_sites_are=/srv/deployment/work
    # modify this so it includes all characters that can be in a site name
    pattern_matching_sitenames=[a-z0-9_\-]
    # this is the first argument when the function is called
    newsite=$1
    # this replaces the site name in the current working directory
    newdir=$(pwd | sed -n -e "s@\($where_my_sites_are\)/\($pattern_matching_sitenames\+\)/\(.*\)@\1/$newsite/\3@p")
    cd $newdir
}

How it works: The sed expression splits the output of pwd into three parts: what is before the current site name, the current site name, and what comes after. Then sed puts it back together with the new site name. Just make sure the pattern can match all characters that could be in your site name. Research character classes for details.

Upvotes: 1

Shravan40
Shravan40

Reputation: 9908

Add the below lines into ~/.bash_aliases

export sitename1=srv/deployment/work/sitename1/wp-content/uploads/2018/
export sitename2=srv/deployment/work/sitename2/wp-content/uploads/2018/

After that

source ~/.bash_aliases

Then you can simply type sitename1 and sitename2 from anywhere to switch to respective directories

Upvotes: 0

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