diff --git a/tldr/aws-acm b/tldr/aws-acm
new file mode 100644
index 00000000..51909e44
--- /dev/null
+++ b/tldr/aws-acm
@@ -0,0 +1,41 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# aws acm
+
+> AWS Certificate Manager.
+> More information: <https://awscli.amazonaws.com/v2/documentation/api/latest/reference/acm/index.html>.
+
+- Import a certificate:
+
+`aws acm import-certificate --certificate-arn {{certificate_arn}} --certificate {{certificate}} --private-key {{private_key}} --certificate-chain {{certificate_chain}}`
+
+- List certificates:
+
+`aws acm list-certificates`
+
+- Describe a certificate:
+
+`aws acm describe-certificate --certificate-arn {{certificate_arn}}`
+
+- Request a certificate:
+
+`aws acm request-certificate --domain-name {{domain_name}} --validation-method {{validation_method}}`
+
+- Delete a certificate:
+
+`aws acm delete-certificate --certificate-arn {{certificate_arn}}`
+
+- List certificate validations:
+
+`aws acm list-certificates --certificate-statuses {{status}}`
+
+- Get certificate details:
+
+`aws acm get-certificate --certificate-arn {{certificate_arn}}`
+
+- Update certificate options:
+
+`aws acm update-certificate-options --certificate-arn {{certificate_arn}} --options {{options}}`
diff --git a/tldr/aws-kendra b/tldr/aws-kendra
index 2b5e5233..2dd780b9 100644
--- a/tldr/aws-kendra
+++ b/tldr/aws-kendra
@@ -6,11 +6,11 @@ source: https://github.com/tldr-pages/tldr.git
 # aws kendra
 
 > CLI for AWS Kendra.
-> More information: <https://docs.aws.amazon.com/cli/latest/reference/kendra/index.html>.
+> More information: <https://awscli.amazonaws.com/v2/documentation/api/latest/reference/kendra/index.html>.
 
 - Create an index:
 
-`aws kendra create-index --name {{name}} --role-arn {{role-arn}}`
+`aws kendra create-index --name {{name}} --role-arn {{role_arn}}`
 
 - List indexes:
 
@@ -18,7 +18,7 @@ source: https://github.com/tldr-pages/tldr.git
 
 - Describe an index:
 
-`aws kendra describe-index --id {{index-id}}`
+`aws kendra describe-index --id {{index_id}}`
 
 - List data sources:
 
@@ -26,8 +26,8 @@ source: https://github.com/tldr-pages/tldr.git
 
 - Describe a data source:
 
-`aws kendra describe-data-source --id {{data-source-id}}`
+`aws kendra describe-data-source --id {{data_source_id}}`
 
 - List search queries:
 
-`aws kendra list-query-suggestions --index-id {{index-id}} --query-text {{query-text}}`
+`aws kendra list-query-suggestions --index-id {{index_id}} --query-text {{query_text}}`
diff --git a/tldr/linux/journalctl b/tldr/linux/journalctl
index 1a81f0ed..57fefece 100644
--- a/tldr/linux/journalctl
+++ b/tldr/linux/journalctl
@@ -22,7 +22,7 @@ source: https://github.com/tldr-pages/tldr.git
 
 - Show all messages by a specific [u]nit:
 
-`journalctl -u {{unit}}`
+`journalctl --unit {{unit}}`
 
 - Show logs for a given unit since the last time it started:
 
diff --git a/tldr/linux/mkfs.erofs b/tldr/linux/mkfs.erofs
new file mode 100644
index 00000000..c4cc4dfd
--- /dev/null
+++ b/tldr/linux/mkfs.erofs
@@ -0,0 +1,25 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# mkfs.erofs
+
+> Create an EROFS filesystem in an image.
+> More information: <https://erofs.docs.kernel.org/en/latest/>.
+
+- Create an EROFS filesystem based on the root directory:
+
+`mkfs.erofs image.erofs root/`
+
+- Create an EROFS image with a specific UUID:
+
+`mkfs.erofs -U {{UUID}} image.erofs root/`
+
+- Create a compressed EROFS image:
+
+`mkfs.erofs -zlz4hc image.erofs root/`
+
+- Create an EROFS image where all files are owned by root:
+
+`mkfs.erofs --all-root image.erofs root/`
diff --git a/tldr/osx/netstat b/tldr/osx/netstat
index 07d71f32..2b05818e 100644
--- a/tldr/osx/netstat
+++ b/tldr/osx/netstat
@@ -6,6 +6,7 @@ source: https://github.com/tldr-pages/tldr.git
 # netstat
 
 > Display network-related information such as open connections, open socket ports, etc.
+> See also: `lsof` for listing network connections, including listening ports.
 > More information: <https://keith.github.io/xcode-man-pages/netstat.1.html>.
 
 - Display the PID and program name listening on a specific protocol: