feat: dry run

Author: c-dilks

util/run-here.sh

@@ -1,19 +1,22 @@
 #!/usr/bin/env bash
 set -euo pipefail
 offset=0
+dry=false
 usage() {
   echo """
   Run jobs from a slurm submission script's job list on
   the current interactive node; be nice and keep NUM_JOBS
   low, since this is only meant for rapid testing
 
-  USAGE: $0 [JOB_LIST] [LOG_DIR] [NUM_JOBS] [OFFSET]
+  USAGE: $0 [JOB_LIST] [LOG_DIR] [NUM_JOBS] [OFFSET] [DRY]
     JOB_LIST  file with job scripts, one per line
     LOG_DIR   directory for log files (clobbered)
     NUM_JOBS  the number of parallel jobs to run
     OFFSET    offset of the first job; NUM_JOBS
               consecutive lines will be used
               default: $offset
+    DRY       set to '1' for a dry-run (no submission)
+              default: run immediately
     """
 }
 
@@ -25,6 +28,7 @@ job_list=$1
 log_dir=$2
 num_jobs=$3
 [ $# -ge 4 ] && offset=$4
+[ $# -ge 5 ] && dry=true
 
 if [ ! -f "$job_list" ]; then
   echo "ERROR: File '$job_list' not found"
@@ -42,12 +46,18 @@ i=0
 echo "SUBMITTING:"
 tail -n +$((offset + 1)) $job_list | head -n $num_jobs | while IFS= read -r cmd; do
   echo "JOB $i: $cmd"
-  # $cmd > $log_dir/job.$i.out 2> $log_dir/job.$i.err &
+  if ! $dry; then
+    $cmd > $log_dir/job.$i.out 2> $log_dir/job.$i.err &
+  fi
   i=$((i+1))
 done
-echo """
+if $dry; then
+  echo "THIS WAS A DRY-RUN; no jobs submitted"
+else
+  echo """
 JOBS SUBMITTED.
 - They are running in the backround
 - Monitor with \`htop -u $(whoami)\`
 - Logs written to \`$log_dir\`
-"""
+  """
+fi