How to show list of installed extensions for firefox via command line?

Solution 1:

Give a try to this grep oneliner command to list all the firefox addons,

grep -oP '(?<=\},\"name\":\")([^"]*)' ~/.mozilla/firefox/*.default/addons.json

OR

This worked for me:

user@host:~$ cat ~/.mozilla/firefox/*.default/addons.json |
python -c 'import json,sys;obj=json.load(sys.stdin);
for (i, x) in enumerate(obj["addons"]):
  print x["name"]' | uniq

Output in my case:

Clean Links
Tee-Timer

Explanation:

• cat ~/.mozilla/firefox/*.default/addons.json: reads the addons.json file in each profile.
• python -c 'import json,sys;obj=json.load(sys.stdin); load the json parser library of python and loads json via stdin (standard input), ergo from cat
• for (i, x) in enumerate(obj["addons"]): phyton code to loop through the array of addons...
• print x["name"]' | uniq ...and print its name only one.

Solution 2:

This is basically just a simplified version of @chaos's approach:

grep -oP '},"name":"\K[^"]*' ~/.mozilla/firefox/*.default/addons.json

There's no reason to get the name of the user, you can always just use ~/ or $HOME to get the home directory. The name of the default profile is, likewise, unneeded. You probably only have one and its name will be RandomString.default. If you have more than one, and different addons for each, this approach will list all of them. So, if you do have multiple profiles, you might want to add | uniq to the above command to remove duplicates.

Explanation

• grep -oP : the -o causes grep to only print the matched portion of the line and the -P activates Perl Compatible Regular Expressions which are needed for the \K (see below).
• },"name":"\K[^"]*: match the longest stretch of non-" characters ([^"]*) that come right after },"name":. The \K means "ignore everything matched up to here" which, when combined with -o, will cause only the part of the match after the name:":" to be printed.
• ~/ : this is your home directory.

Solution 3:

Following scriptlet is just a more-featureful version of @chaos's code. My motivations were

• I use more than one Firefox profile.
• I put my Firefox profiles in a different dir/folder than the default: see FIREFOX_PROFILE_ROOT in script/let, which you should probably edit (back to the default), or use the newer profiles.ini-parsing code (see link below).
• I wanted to see more information about my add-ons, since I was having a problem that turned out to be extension-version-related.
• I just hadn't coded for a few days :-)

You can also {see the latest version of this code, use the latest version as a downloadable script file} here. Note the newer code also parses profiles.ini (using the profile paths you define there) rather than relying (as below) on you telling the code where to find your profiles.

### List add-ons in all local Firefox profiles. Requires:

### * users to know where they keep their Firefox profiles. TODO: parse `profiles.ini`
### * python (to parse the add-ons JSON)

### Tested on Linux with Python versions={2.7.9, 3.4.2}.

### Copyright (C) 2017 Tom Roche <[email protected]>
### This work is licensed under the Creative Commons Attribution 4.0 International License.
### To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

#FIREFOX_PROFILE_ROOT="${HOME}/.mozilla/firefox"  # default Firefox path, which ...
FIREFOX_PROFILE_ROOT="${HOME}/firefox"           # ... I override, but you probably should not!
FIREFOX_ADDONS_FILENAME='addons.json'            # default Firefox value
FIREFOX_ADDONS_FP_LIST=''                        # default empty

### find add-ons JSON files:

if  [[ ! -r "${FIREFOX_PROFILE_ROOT}" ]] ; then
    >&2 echo "ERROR: cannot read FIREFOX_PROFILE_ROOT='${FIREFOX_PROFILE_ROOT}', exiting ..."
else

    FIREFOX_ADDONS_FP_LIST="$(find "${FIREFOX_PROFILE_ROOT}/" -type f -name "${FIREFOX_ADDONS_FILENAME}" | fgrep -ve 'blocklists')"
#    echo -e "FIREFOX_ADDONS_FP_LIST=\n${FIREFOX_ADDONS_FP_LIST}" # debugging


    if   [[ ( -z "${FIREFOX_ADDONS_FP_LIST}" ) ||
            ( "$(echo ${FIREFOX_ADDONS_FP_LIST} | wc -l)" == '0' ) ]] ; then
        >&2 echo "ERROR: found no add-ons files in Firefox profiles under '${FIREFOX_PROFILE_ROOT}', exiting ..."
    else

        for FIREFOX_ADDONS_FP in ${FIREFOX_ADDONS_FP_LIST} ; do
            echo "${FIREFOX_ADDONS_FP} contains:"
            ### Parse add-ons file using python, so
            ### * gotta export the envvar
            export FIREFOX_ADDONS_FP
            ### * indenting becomes important

            python -c '
import json, os
with open(os.environ.get("FIREFOX_ADDONS_FP")) as addons_file:
    addons_data = json.load(addons_file)
    for (i, addon) in enumerate(addons_data["addons"]):
        print("add-on name=" + addon["name"])
        print("    version=" + addon["version"])
        print("        URI=" + addon["learnmoreURL"])
        print("") # newline
'

            echo # newline
        done
    fi
fi