From 90bc3267aec3d0f405819969fee349227b4a17c9 Mon Sep 17 00:00:00 2001
From: ajshedivy <ajshedivy@wisc.edu>
Date: Mon, 20 Feb 2023 15:48:30 -0600
Subject: [PATCH 1/4] add sctail file

---
 scripts/sctail | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100755 scripts/sctail

diff --git a/scripts/sctail b/scripts/sctail
new file mode 100755
index 0000000..77395fd
--- /dev/null
+++ b/scripts/sctail
@@ -0,0 +1,9 @@
+#!/QOpenSys/pkgs/bin/bash
+FILE_NAME=$($(dirname $0)/sc loginfo $1)
+if [ -z "$FILE_NAME" ]
+then
+    >&2 echo "No configuration file found for '$1'"
+    exit 5
+fi
+
+echo "Configuration for '$1' found at $FILE_NAME"

From d9f88517235ab6234d3c872d9d8f1aed8128dc73 Mon Sep 17 00:00:00 2001
From: ajshedivy <ajshedivy@wisc.edu>
Date: Mon, 20 Feb 2023 17:03:10 -0600
Subject: [PATCH 2/4] edit sctail logic

---
 scripts/sctail | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/scripts/sctail b/scripts/sctail
index 77395fd..8d27519 100755
--- a/scripts/sctail
+++ b/scripts/sctail
@@ -1,9 +1,3 @@
 #!/QOpenSys/pkgs/bin/bash
-FILE_NAME=$($(dirname $0)/sc loginfo $1)
-if [ -z "$FILE_NAME" ]
-then
-    >&2 echo "No configuration file found for '$1'"
-    exit 5
-fi
 
-echo "Configuration for '$1' found at $FILE_NAME"
+/QOpenSys/pkgs/bin/sc loginfo $1 | /QOpenSys/pkgs/bin/cut -d ':' -f 2 | /QOpenSys/pkgs/bin/xargs tail -f

From 88edc74a847afaef631b3fadd1dd51ed5a54896c Mon Sep 17 00:00:00 2001
From: ajshedivy <ajshedivy@wisc.edu>
Date: Mon, 20 Feb 2023 17:36:15 -0600
Subject: [PATCH 3/4] update sctail logic, update makefile

---
 Makefile       |  1 +
 scripts/sctail | 44 +++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 44 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index b9fda66..5500181 100644
--- a/Makefile
+++ b/Makefile
@@ -71,6 +71,7 @@ install: scripts/sc scripts/scinit scripts/sc_install_defaults target/sc.jar tar
 	install -m 555 -o qsys scripts/sc ${INSTALL_ROOT}/QOpenSys/pkgs/bin/
 	install -m 555 -o qsys scripts/scinit ${INSTALL_ROOT}/QOpenSys/pkgs/bin/
 	install -m 555 -o qsys scripts/scedit ${INSTALL_ROOT}/QOpenSys/pkgs/bin/
+	install -m 555 -o qsys scripts/sctail ${INSTALL_ROOT}/QOpenSys/pkgs/bin/
 	install -m 555 -o qsys scripts/scopenports ${INSTALL_ROOT}/QOpenSys/pkgs/bin/
 	install -m 555 -o qsys scripts/sc_install_defaults ${INSTALL_ROOT}/QOpenSys/pkgs/bin/
 	install -m 444 -o qsys target/sc.jar ${INSTALL_ROOT}/QOpenSys/pkgs/lib/sc/sc.jar
diff --git a/scripts/sctail b/scripts/sctail
index 8d27519..b908c10 100755
--- a/scripts/sctail
+++ b/scripts/sctail
@@ -1,3 +1,45 @@
 #!/QOpenSys/pkgs/bin/bash
 
-/QOpenSys/pkgs/bin/sc loginfo $1 | /QOpenSys/pkgs/bin/cut -d ':' -f 2 | /QOpenSys/pkgs/bin/xargs tail -f
+if (($# == 0)); then
+    echo "usage: sctail [-f|--follow] <service name>"
+    exit 0
+fi
+
+POSITIONAL_ARGS=()
+HELP_MSG=NO
+FOLLOW=NO
+
+while [[ $# -gt 0 ]]; do
+  case $1 in
+    -f|--follow)
+      FOLLOW=YES
+      shift # past argument with no value
+      ;;
+    --help)
+      HELP_MSG=YES
+      shift # past argument with no value
+      ;;
+    -*|--*)
+      echo "Unknown option $1"
+      exit 1
+      ;;
+    *)
+      POSITIONAL_ARGS+=("$1") # save positional arg
+      shift # past argument
+      ;;
+  esac
+done
+set -- "${POSITIONAL_ARGS[@]}" # restore positional parameters
+
+if [ ${HELP_MSG} == YES ]; then
+	echo "usage: sctail [-f|--follow] <service name>"
+	exit 0
+fi
+
+/QOpenSys/pkgs/bin/sc loginfo $1
+
+if [ ${FOLLOW} == YES ]; then
+    /QOpenSys/pkgs/bin/sc loginfo $1 | /QOpenSys/pkgs/bin/cut -d ':' -f 2 | /QOpenSys/pkgs/bin/xargs tail -f
+else
+    /QOpenSys/pkgs/bin/sc loginfo $1 | /QOpenSys/pkgs/bin/cut -d ':' -f 2 | /QOpenSys/pkgs/bin/xargs tail
+fi

From 3f0012f149314b0012bb090357c55eae11b1f22e Mon Sep 17 00:00:00 2001
From: ajshedivy <ajshedivy@wisc.edu>
Date: Tue, 21 Feb 2023 10:58:24 -0600
Subject: [PATCH 4/4] formalize tail logic and sc call

---
 scripts/sctail | 85 +++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 66 insertions(+), 19 deletions(-)

diff --git a/scripts/sctail b/scripts/sctail
index b908c10..1c3e2c5 100755
--- a/scripts/sctail
+++ b/scripts/sctail
@@ -1,45 +1,92 @@
 #!/QOpenSys/pkgs/bin/bash
 
+if [[ "$LC_ALL" != *UTF-8* ]]; then
+    # LC_ALL is not set. Set it to EN_US.UTF-8 if present
+    if [ -e /usr/lib/nls/loc/EN_US.UTF-8 ]; then
+        export LC_ALL=EN_US.UTF-8
+    else
+        # EN_US.UTF-8 is not present. Look for installed UTF-8 locale
+        INSTALLEDUTF8LOCALE=$(ls -b /usr/lib/nls/loc | grep -E '.UTF-8$' | tail -n 1)
+        if [[ "" = "$INSTALLEDUTF8LOCALE" ]]; then
+            >&2 echo "WARNING: Cannot find a UTF-8 locale installed on this system."
+        else
+            export LC_ALL=$INSTALLEDUTF8LOCALE
+        fi
+    fi
+fi
+
 if (($# == 0)); then
-    echo "usage: sctail [-f|--follow] <service name>"
+    echo "usage: sctail [tail OPTION]... <service name>"
     exit 0
 fi
 
-POSITIONAL_ARGS=()
 HELP_MSG=NO
-FOLLOW=NO
 
+# Set the default arguments for tail
+TAIL_ARGS=""
+
+# Initialize variable for service name
+SERVICE=""
+
+# Declare an array to hold the arguments and their values
+declare -a ARGS=()
+
+# Loop through the command line arguments
 while [[ $# -gt 0 ]]; do
-  case $1 in
-    -f|--follow)
-      FOLLOW=YES
-      shift # past argument with no value
+  key="$1"
+  case $key in
+    -c|--bytes|-n|--lines|-s|--sleep-interval|--pid|--max-unchanged-stats)
+      # If the argument has a value, add it to the array
+      if [[ $# -gt 1 && "$2" != -* ]]; then
+        ARGS+=("$1 $2")
+        shift
+      else
+        ARGS+=("$1")
+      fi
+      ;;
+    -f|--follow|-F|--retry|-q|--quiet|--silent|-v|--verbose|-z|--zero-terminated|--version)
+      ARGS+=("$1")
       ;;
     --help)
       HELP_MSG=YES
       shift # past argument with no value
       ;;
     -*|--*)
-      echo "Unknown option $1"
+      echo "sctail: invalid option -- '$1'"
+      echo "usage: sctail [OPTION]... <service name>"
+      echo "Try 'sctail --help' for more information."
       exit 1
       ;;
     *)
-      POSITIONAL_ARGS+=("$1") # save positional arg
-      shift # past argument
+
+      # If the argument doesn't start with a dash, set it as the SERVICE value
+      SERVICE="$1"
       ;;
   esac
+  shift
 done
-set -- "${POSITIONAL_ARGS[@]}" # restore positional parameters
 
-if [ ${HELP_MSG} == YES ]; then
-	echo "usage: sctail [-f|--follow] <service name>"
-	exit 0
+if [[ $HELP_MSG == YES ]]; then
+    echo "sctail usage: sctail [tail OPTION]... <service name]"
+    exec /QOpenSys/pkgs/bin/tail --help
+    exit 0
 fi
 
-/QOpenSys/pkgs/bin/sc loginfo $1
 
-if [ ${FOLLOW} == YES ]; then
-    /QOpenSys/pkgs/bin/sc loginfo $1 | /QOpenSys/pkgs/bin/cut -d ':' -f 2 | /QOpenSys/pkgs/bin/xargs tail -f
-else
-    /QOpenSys/pkgs/bin/sc loginfo $1 | /QOpenSys/pkgs/bin/cut -d ':' -f 2 | /QOpenSys/pkgs/bin/xargs tail
+if [[ ${#ARGS[@]} -gt 0 ]]; then
+    TAIL_ARGS+=" ${ARGS[*]}"
 fi
+
+
+echo "SERVICE:        $SERVICE"
+echo "TAIL_ARGS:      $TAIL_ARGS"
+
+LOG=$($(dirname $0)/sc loginfo $SERVICE | /QOpenSys/pkgs/bin/cut -d ':' -f 2 | awk '{ for (i=1; i<=NF; i++) print $i }')
+if [[ -z $LOG ]]; then
+    echo "No log file found for service $SERVICE"
+    exit 1
+fi
+
+echo "LOG:            $LOG"
+
+exec /QOpenSys/pkgs/bin/tail $TAIL_ARGS $LOG