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Unused Certificates For Loop

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for cert in $(tmsh list sys file ssl-cert | grep "sys file ssl-cert" | awk '{print $4}'); do
    if ! tmsh list ltm profile client-ssl | grep -q $cert; then
        echo "Unused certificate: $cert"
    fi
done
 
{{output}}
Unused certificate: ca-bundle.crt
Unused certificate: f5-ca-bundle.crt
Unused certificate: f5-irule.crt
Unused certificate: f5_api_com.crt
Unused certificate: test30.infotechguy.dev_2025_112491.crt
Unused certificate: test30.infotechguy.dev_2025_140516.crt
Unused certificate: test30.infotechguy.dev_2025_196380.crt
Unused certificate: test30.infotechguy.dev_2025_827939.crt
Unused certificate: test31.infotechguy.dev_2025_112491.crt
Unused certificate: test31.infotechguy.dev_2025_140516.crt
Unused certificate: test31.infotechguy.dev_2025_196380.crt
Unused certificate: test31.infotechguy.dev_2025_827939.crt
Unused certificate: test32.infotechguy.dev_2025_112491.crt
Unused certificate: test32.infotechguy.dev_2025_140516.crt
Unused certificate: test32.infotechguy.dev_2025_196380.crt
Unused certificate: test32.infotechguy.dev_2025_827939.crt

Cool, lets take this further. let’s put each entry (take certificates loop) into an array so we can manipulate it later, in a deletion loop.

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# Declare an array to store unused certificates
unused_certs=()
 
# List of certificates to exclude (exclude these system certs)
exclude_list=("ca-bundle.crt" "f5-ca-bundle.crt" "f5-irule.crt" "f5_api_com.crt")
 
# Loop through each certificate found in BIG-IP
for cert in $(tmsh list sys file ssl-cert | grep "sys file ssl-cert" | awk '{print $4}'); do
    # Skip certificates in the exclude list
    if [[ " ${exclude_list[@]} " =~ " $cert " ]]; then
        continue
    fi
 
    if ! tmsh list ltm profile client-ssl | grep -q $cert; then
        unused_certs+=("$cert")  # Add unused cert to array
    fi
done
 
# Dry run: Print the certificates that would be deleted
echo "Dry Run: The following unused certificates would be deleted:"
for cert in "${unused_certs[@]}"; do
    echo "$cert"
done
 
{{output}}
test30.infotechguy.dev_2025_112491.crt
test30.infotechguy.dev_2025_140516.crt
test30.infotechguy.dev_2025_196380.crt
test30.infotechguy.dev_2025_827939.crt
test31.infotechguy.dev_2025_112491.crt
test31.infotechguy.dev_2025_140516.crt
test31.infotechguy.dev_2025_196380.crt
test31.infotechguy.dev_2025_827939.crt
test32.infotechguy.dev_2025_112491.crt
test32.infotechguy.dev_2025_140516.crt
test32.infotechguy.dev_2025_196380.crt
test32.infotechguy.dev_2025_827939.crt