Msimamizi anaidhinisha ufikiaji wa nakala rudufu kabla ya kunakili faili.

Swahili normally does not use articles like the or a/an.

So Msimamizi can mean:

• the supervisor
• a supervisor
• sometimes just supervisor, depending on context

The context tells you which English article is most natural.

Also, msimamizi is a singular human noun. Its plural is wasimamizi.

Because Swahili verbs normally include a subject prefix, even when the full subject noun is also present.

So in Msimamizi anaidhinisha:

• Msimamizi = the supervisor
• a- = he/she
• -na- = present tense
• idhinisha = authorize, approve

This is normal Swahili structure. In other words, Swahili often says the equivalent of:

• The supervisor he/she authorizes...

but in natural English we simply say:

• The supervisor authorizes...

anaidhinisha can be broken down like this:

• a- = subject marker for he/she
• -na- = present tense marker
• -idhinisha = verb stem meaning authorize / approve

So anaidhinisha means:

• he/she authorizes
• he/she is authorizing

In many contexts, the Swahili present tense can cover both a general/habitual meaning and a present-time meaning. Context decides which is more natural.

Ufikiaji is a noun meaning access.

It is not the infinitive to access. Instead, it is a noun naming the concept itself, just like English access in:

• access to the system
• access to backups

Swahili often uses nouns of this kind, and ufikiaji is a very common word in technical or administrative language.

Here wa is the associative connector, often corresponding to English of or sometimes to, depending on the phrase.

So:

• ufikiaji wa nakala rudufu = access to backup copies / access of backup copies

In better English, we usually say access to backup copies.

The form wa is chosen because it agrees with the noun ufikiaji. In Swahili, these connectors change form depending on the noun class of the word before them.

Literally, it is something like:

• nakala = copy
• rudufu = duplicate, backup, spare, redundant

So nakala rudufu is a compound expression meaning:

• backup copy
• duplicate copy
• in computer/IT context, often simply backup

Because the sentence is technical, nakala rudufu is best understood as backup copy/copies.

It can be a little ambiguous without context.

The word nakala often has the same form in singular and plural, so nakala rudufu may mean:

• a backup copy
• backup copies

The surrounding context usually makes it clear.

So a translation might choose either singular or plural depending on what sounds most natural in English.

Kabla ya means before.

It is a fixed expression used before:

• a noun, or
• an infinitive/verbal noun

In this sentence:

• kabla ya kunakili faili = before copying the file/files or before to copy the file/files in a very literal gloss

Natural English is:

• before copying the file
• before copying files

So yes, kabla ya is the normal way to say before in this kind of structure.

Because after kabla ya, Swahili commonly uses the infinitive form of the verb.

So:

• kunakili = to copy / copying

Breakdown:

• ku- = infinitive marker
• -nakili = copy

Compare:

• anakili faili = he/she copies a file
• kunakili faili = to copy a file / copying a file

After kabla ya, the infinitive works a lot like an English -ing form:

• kabla ya kunakili faili = before copying the file

Faili is the object of kunakili, so it comes after the verb, just as objects normally do in Swahili.

• kunakili faili = to copy a file / files

Also, faili is a loanword from English file, and like many loanwords in Swahili, it may not change form clearly between singular and plural in everyday use. So context may determine whether English should say:

• file
• files

It can be either, depending on context.

The -na- tense in anaidhinisha often covers:

• a general or habitual action: The supervisor authorizes access...
• a present ongoing action: The supervisor is authorizing access...

In a technical, policy, or procedural sentence like this one, the general rule reading is often the most natural:

• The supervisor authorizes access to backup copies before copying files.

But if the surrounding context is about a specific moment, it could also describe something happening right now.