Edit /etc/profile

Discussion in 'Tomato Firmware' started by windom, Jul 3, 2018.

  1. windom

    windom Serious Server Member

    I want to edit /etc/profile which actually resides in /rom/etc/profile. That, of course, is a read-only file system. What is the technique for doing this? Maybe I need to use a different approach? One of the things I want to change is the path.

  2. Chmmmr

    Chmmmr Reformed Router Member

    I usually just add a command to the init script (/admin-scripts.asp).

    something like this:

    echo "LABEL=ENTWARE /opt ext2 rw,noatime 1 1" >> /etc/fstab
  3. Sean B.

    Sean B. LI Guru Member

    You can add to the system path via the nvram ram variable env_path. IE:

    nvram set env_path="/tmp/mnt/flashdrive:"
    nvram commit
    Make sure multiple paths are separated with a : , as well having a : end the line as well. If done from a shell, you must log out/log in for the change to take effect.
  4. koitsu

    koitsu Network Guru Member

    If it's for a single user (ex. root), then use dotfiles: /root/.profile will work just fine.

    If it's system-wide, and you truly need this: did you actually examine /etc/profile? If so, you would find these two lines:

    [ -f /jffs/etc/profile ] && . /jffs/etc/profile
    [ -f /opt/etc/profile ] && . /opt/etc/profile
    From this, it should become quite apparent what you can do achieve additional settings or overwrites to whatever is in /etc/profile: just make sure you have one of those two files existing and you should be fine. If you're using a USB HDD or USB flash drive with Entware (previously known as Entware-ng or Entware-ng-3x), be aware that it installs a default /opt/etc/profile which you can tweak as you see fit.

    There is also another way, specifically using a bind mount, but the above mechanisms are already in place and don't require any magic/tweaking to accomplish. If you don't use Entware, then you can literally do something like this in Scripts -> Init:

    mkdir -p -m 755 /opt/etc
    cat >> /opt/etc/profile < 'EOF'
    chmod 644 /opt/etc/profile
    ...and the next time you get a shell, it should read /etc/profile, which in turn sources/reads /opt/etc/profile. You can use the same methodology as above but for /root/.profile if desired.
    Monk E. Boy likes this.
  5. windom

    windom Serious Server Member

    @koltsu, your first suggestion is just what I need. I feel so dull-witted not having seen that.
    Thank you.

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