3 mentioned that PPAs also effectively give 3rd parties root access, added bit about GTK versions, added link to other newer/patched packages
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PPAs are inherently unsafe. By adding a PPA, you are giving a 3rd party the ability to distribute/replace anyany package (including important security-related system packages), and consequently the equivalent of administrator privileges. You should only add PPAs of developers you know to be trustworthy.

That said, theoretically PPAs that target Ubuntu 14.04 (Trusty) shouldmay be compatible with elementary OS Freya. However, there's no real way to know other than by trying it or(or if the distributor commentsstates that it is compatible), and some differences between elementary OS and Ubuntu could cause issues. There

One difference, for example, is nothing inherently incompatiblethe version of GTK+ (Ubuntu 14.04 uses 3.10, but there could beelementary OS Freya uses 3.14). elementary OS also includes several newer or patched packages; for a complete list, see the os-patches PPA on Launchpad.

PPAs are inherently unsafe. By adding a PPA, you are giving a 3rd party the ability to distribute/replace any package (including important security-related system packages). You should only add PPAs of developers you know to be trustworthy.

That said, theoretically PPAs that target Ubuntu 14.04 (Trusty) should be compatible with elementary OS Freya. However there's no real way to know other than by trying it or if the distributor comments that it is compatible. There is nothing inherently incompatible, but there could be.

PPAs are inherently unsafe. By adding a PPA, you are giving a 3rd party the ability to distribute/replace any package (including important security-related system packages), and consequently the equivalent of administrator privileges. You should only add PPAs of developers you know to be trustworthy.

That said, theoretically PPAs that target Ubuntu 14.04 (Trusty) may be compatible with elementary OS Freya. However, there's no real way to know other than by trying it (or if the distributor states that it is compatible), and some differences between elementary OS and Ubuntu could cause issues.

One difference, for example, is the version of GTK+ (Ubuntu 14.04 uses 3.10, elementary OS Freya uses 3.14). elementary OS also includes several newer or patched packages; for a complete list, see the os-patches PPA on Launchpad.

2 added 62 characters in body
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PPAs are inherently unsafe. By adding a PPA, you are giving a 3rd party the ability to distribute/replace any package (including important security-related system packages). You should only add PPAs of developers you know to be trustworthy.

That said, theoretically PPAs that target Ubuntu 14.04 (Trusty) should be compatible with elementary OS Freya. However there's no real way to know other than by trying it or if the distributor comments that it is compatible. There is nothing inherently incompatible, but there could be.

PPAs are inherently unsafe. By adding a PPA, you are giving a 3rd party the ability to distribute/replace any package (including important security-related system packages). You should only add PPAs of developers you know to be trustworthy.

That said, theoretically PPAs that target Ubuntu 14.04 (Trusty) should be compatible with elementary OS Freya. However there's no real way to know other than by trying it or if the distributor comments that it is compatible.

PPAs are inherently unsafe. By adding a PPA, you are giving a 3rd party the ability to distribute/replace any package (including important security-related system packages). You should only add PPAs of developers you know to be trustworthy.

That said, theoretically PPAs that target Ubuntu 14.04 (Trusty) should be compatible with elementary OS Freya. However there's no real way to know other than by trying it or if the distributor comments that it is compatible. There is nothing inherently incompatible, but there could be.

1
source | link

PPAs are inherently unsafe. By adding a PPA, you are giving a 3rd party the ability to distribute/replace any package (including important security-related system packages). You should only add PPAs of developers you know to be trustworthy.

That said, theoretically PPAs that target Ubuntu 14.04 (Trusty) should be compatible with elementary OS Freya. However there's no real way to know other than by trying it or if the distributor comments that it is compatible.