salloc, sattach, sbcast, sdiag, sprio, sshare, strigger, sview, sh5util, scrun, scrontab: add pages (#11651)

pages/linux/strigger.md

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+# strigger
+
+> View or modify Slurm trigger information.
+> Triggers are actions that are automatically run when a given event occurs on a Slurm cluster.
+> More information: <https://slurm.schedmd.com/strigger.html>.
+
+- Register a new trigger. Execute the specified program when the specified event occurs:
+
+`strigger --set --{{primary_database_failure|primary_slurmdbd_failure|primary_slurmctld_acct_buffer_full|primary_slurmctld_failure|...}} --program={{path/to/executable}}`
+
+- Execute the specified program when the specified job terminated:
+
+`strigger --set --jobid={{job_id}} --fini --program="{{path/to/executable}} {{argument1 argument2 ...}}"`
+
+- View active triggers:
+
+`strigger --get`
+
+- View active triggers regarding the specified job:
+
+`strigger --get --jobid={{job_id}}`
+
+- Clear the specified trigger:
+
+`strigger --clear {{trigger_id}}`