Remove couple linux-isms: these are not valid on macos

Some did actually prevent proper test shutdown

test/sharness/t0080-repo.sh

@@ -247,10 +247,10 @@ test_expect_success "'ipfs repo stat --human' succeeds" '
 
 test_expect_success "repo stats --human came out correct" '
   grep "RepoPath" repo-stats-human &&
-  grep -P "RepoSize:\s*([0-9]*[.])?[0-9]+\s+?(B|kB|MB|GB|TB|PB|EB)" repo-stats-human &&
+  grep -E "RepoSize:\s*([0-9]*[.])?[0-9]+\s+?(B|kB|MB|GB|TB|PB|EB)" repo-stats-human &&
   grep "NumObjects" repo-stats-human &&
   grep "Version" repo-stats-human &&
-  grep -P "StorageMax:\s*([0-9]*[.])?[0-9]+\s+?(B|kB|MB|GB|TB|PB|EB)" repo-stats-human ||
+  grep -E "StorageMax:\s*([0-9]*[.])?[0-9]+\s+?(B|kB|MB|GB|TB|PB|EB)" repo-stats-human ||
   test_fsh cat repo-stats-human
 '
 

test/sharness/t0180-p2p.sh

@@ -22,10 +22,10 @@ test_expect_success 'peer ids' '
 '
 check_test_ports() {
   test_expect_success "test ports are closed" '
-    (! (netstat -lnp | grep "LISTEN" | grep ":10101 ")) &&
-    (! (netstat -lnp | grep "LISTEN" | grep ":10102 "))&&
-    (! (netstat -lnp | grep "LISTEN" | grep ":10103 ")) &&
-    (! (netstat -lnp | grep "LISTEN" | grep ":10104 "))
+    (! (netstat -aln | grep "LISTEN" | grep -E "[.:]10101 ")) &&
+    (! (netstat -aln | grep "LISTEN" | grep -E "[.:]10102 ")) &&
+    (! (netstat -aln | grep "LISTEN" | grep -E "[.:]10103 ")) &&
+    (! (netstat -aln | grep "LISTEN" | grep -E "[.:]10104 "))
   '
 }
 check_test_ports

test/sharness/t0280-plugin-git.sh

@@ -21,7 +21,7 @@ test_dag_git() {
   '
 
   test_expect_success "successfully get added objects" '
-    cat hashes | xargs -i ipfs dag get -- {} > /dev/null
+    cat hashes | xargs -I {} ipfs dag get -- {} > /dev/null
   '
 
   test_expect_success "path traversals work" '