sha*sum: change example to long arguments

pages/common/sha1sum.md

@@ -12,8 +12,8 @@
 
 - Read a file of SHA1 sums and verify all files have matching checksums:
 
-`sha1sum -c {{filename.sha1}}`
+`sha1sum --check {{filename.sha1}}`
 
 - Verify all files have matching chesksums but don't print OK for succefully verified file:
 
-`sha1sum -c --quiet {{filename.sha1}}`
+`sha1sum --check --quiet {{filename.sha1}}`

pages/common/sha224sum.md

@@ -12,8 +12,8 @@
 
 - Read a file of SHA224 sums and verify all files have matching checksums:
 
-`sha224sum -c {{filename.sha224}}`
+`sha224sum --check {{filename.sha224}}`
 
 - Verify all files have matching chesksums but don't print OK for succefully verified file:
 
-`sha224sum -c --quiet {{filename.sha224}}`
+`sha224sum --check --quiet {{filename.sha224}}`

pages/common/sha256sum.md

@@ -12,8 +12,8 @@
 
 - Read a file of SHA256 sums and verify all files have matching checksums:
 
-`sha256sum -c {{filename.sha256}}`
+`sha256sum --check {{filename.sha256}}`
 
 - Verify all files have matching chesksums but don't print OK for succefully verified file:
 
-`sha256sum -c --quiet {{filename.sha256}}`
+`sha256sum --check --quiet {{filename.sha256}}`

pages/common/sha384sum.md

@@ -12,8 +12,8 @@
 
 - Read a file of SHA384 sums and verify all files have matching checksums:
 
-`sha384sum -c {{filename.sha384}}`
+`sha384sum --check {{filename.sha384}}`
 
 - Verify all files have matching chesksums but don't print OK for succefully verified file:
 
-`sha384sum -c --quiet {{filename.sha384}}`
+`sha384sum --check --quiet {{filename.sha384}}`

pages/common/sha512sum.md

@@ -12,8 +12,8 @@
 
 - Read a file of SHA512 sums and verify all files have matching checksums:
 
-`sha512sum -c {{filename.sha512}}`
+`sha512sum --check {{filename.sha512}}`
 
 - Verify all files have matching chesksums but don't print OK for succefully verified file:
 
-`sha512sum -c --quiet {{filename.sha512}}`
+`sha512sum --check --quiet {{filename.sha512}}`

pages/common/shasum.md

@@ -20,7 +20,7 @@
 
 - Check a list of sums but don't print OK for each successfully verified file:
 
-`shasum -c -q {{list_file}}`
+`shasum --check --quiet {{list_file}}`
 
 - Calculate the SHA1 checksum from `stdin`: