Initial script

how-many-subshells.sh

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+#!/usr/bin/env bash
+
+NPROC=$(grep -c ^processor /proc/cpuinfo)
+RESULTS_FOLDER=$(mktemp --dir)
+
+# Checking ulimit
+if [[ $(ulimit) == "unlimited" ]];then
+  ULIMIT_YES="no"
+  while [[ $ULIMIT_YES == "no" ]]
+  do
+    read -p "ulimit is unlimited. This may not go well for the system. Are you sure? (yes/no): " ULIMIT_YES
+    if [[ $ULIMIT_YES == "yes" ]];then
+      break
+    elif [[ $ULIMIT_YES == "no" ]];then
+      exit
+    fi
+  done
+fi
+
+# Run the job with n number of nprocs
+find ./jobs -type f -name "*.sh" | \
+while read JOB_NAME
+do
+  printf "Starting on job $JOB_NAME...\n"
+  SCALE=1
+  CURRENT=9998
+  BEFORE=9999
+  RESULT_FILE="$RESULTS_FOLDER/$(basename $JOB_NAME)"
+  printf "Result file: $(readlink -f $RESULT_FILE)\n"
+  while [[ $(echo "$CURRENT < $BEFORE" | bc) -eq 1 ]]
+  do
+    BEFORE=$CURRENT
+    PARALLEL=$(( $NPROC * $SCALE ))
+    CURRENT=$( \
+      /bin/time --format "%e" \
+        bash -c "seq 1 10000000 | xargs -P $PARALLEL bash $JOB_NAME >/dev/null 2>&1" 2>&1 | \
+        tee -a $RESULT_FILE \
+    )
+    (( SCALE++ ))
+  done
+
+  # Display the results 
+  awk -v nproc="$NPROC" '{print NR*nproc, $0}' $RESULTS_FOLDER/*
+
+done
+
+rm -rf $RESULTS_FOLDER

jobs/curl_google.sh

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+#!/usr/bin/env bash
+
+curl -q https://www.google.com