===== How To Have Fun With Pipes =====

Here are some DCL command aliases that use the ''PIPE'' command and construct, just as examples:

Filter through **SHOW SYSTEM** displays:

  $ show symbol ssystem
  SSYS*TEM == "PIPE SHOW SYSTEM | SEARCH sys$pipe "
  $
  $ ssys jones
  %SEARCH-I-NOMATCHES, no strings matched    ! user jones is not logged-in, and no batch jobs
  $
  $ ssys net                                 ! two network processes
  2020011E NETACP          HIB     10       48   0 00:00:00.01       162    254
  20200140 TCPIP$INETACP   HIB      9    38074   0 00:00:05.57       527    474
  $
  $ ssys osm                                 ! is OSM running?  yes...
  20200160 OSM             HIB      5    58627   0 00:00:08.80       704    312
  20200162 OSM_TRANSPORT   HIB      6     1429   0 00:00:03.77      1128    769
  $
  $ ssys "cur "                              ! CURrent (running on a CPU) processes
  20204138 LRICKER_53227   CUR   1  4      297   0 00:00:00.01       255    258  S
  20204139 LRICKER_29978   CUR   0  5      295   0 00:00:00.01       246    242  S
  20208FB5 DFG$1_CLASS8    CUR   1  2   459266   0 00:32:59.05      6689   3716

Filter through **SHOW QUEUE /BATCH /ALL /FULL** displays (one of VMS's most messy formatted outputs):

  SYSA$ show symbol chkbatch
  CHKBAT*CH == "PIPE show queue /batch /all | SEARCH sys$pipe /WINDOW=(0,2)"
  $
  SYSA$ chkbat boot
    126  SCHED_REBOOT     SYSTEM              Holding until 29-JUN-2018 02:00:00.00
  
  SYSB$ chkbat boot,back
    694  DAILY_BACKUP SYSTEM                  Holding until  7-JUN-2018 20:30:00.00
  ***************
    255  WEEKLY_BACKUP
                         SYSTEM               Holding until  9-JUN-2018 06:00:00.00
  ***************
    223  SCHED_REBOOT
                         SYSTEM               Holding until 29-JUN-2018 02:00:00.00

Filter for **stopped** or **stalled** (and/or other states) **batch/printer queues**:

  $ show symbol qfind
    QFIND == "PIPE SHOW QUEUE /ALL | SEARCH sys$pipe /HIGHLIGHT=UNDERLINE"
  CLASS8$ qfind stalled,stopped
  Batch queue ABS$CLASS8, stopped, on CLASS8::
  Batch queue CLASS3$BATCH, stopped, on CLASS3::
  Batch queue CLASS8_BATCH, stopped, autostart inactive, on CLASS8::
  Printer queue HPLJ4000, stalled, autostart inactive, on CLASS8::"10.217.2.1:3001", mounted form DEFAULT
  Printer queue HPLJ4000D, stopped, on CLASS8::"serial/TTB0", mounted form DCPS$DEFAULT (stock=DEFAULT)
  Printer queue HPT, stopped, on CLASS8::, mounted form DEFAULT
  Batch queue JOKER$BATCH, stopped, on JOKER::
  Printer queue MU_PGPRINT, stopped, on CLASS3::NLP1:, mounted form DEFAULT
  Batch queue T4_BATCH_CLASS3, stopped, autostart, on CLASS3::

Show system or cluster **uptime**:

  $ show symbol uptime
    UPT*IME == "PIPE uptm$ = F$DELTA_TIME( F$GETSYI("BOOTTIME"), F$TIME(), "ASCTIM" ) ; WRITE sys$output uptm$"
  $
  $ uptime
     0 21:05:41.55
  $
  $ show symbol cluptime
    CLUPT*IME == "PIPE SHOW SYSTEM /CLUSTER/NOPROCESS /FULL | SEARCH /WINDOW=(0,2) sys$pipe uptime"
  $
  $ cluptime
  OpenVMS V8.4  on node CLASS8    4-OCT-2018 09:19:52.50   Uptime  0 21:06:13
          HP rx2600  (1.40GHz/1.5MB)

Filters for **layered software products installed**:

  $ show symbol shoproduct
    SHOPRO*DUCT == "PIPE PRODUCT SHOW PRODUCT | SEARCH sys$pipe "
  $ show symbol shohistory
    SHOHIS*TORY == "PIPE PRODUCT SHOW HISTORY | SEARCH sys$pipe "
  $
  $ shoproduct pascal                       ! PASCAL compiler installed?
  %SEARCH-I-NOMATCHES, no strings matched   ! ...nope
  $ shoproduct " c "                        ! C compiler? ...yup
  HP I64VMS C X7.3-289                 Full LP     Installed
  $ shohistory " c "                        ! when installed?
  HP I64VMS C X7.3-289                 Full LP     Install     Val 15-JAN-2014
  HP I64VMS C X7.3-289                 Full LP     Install     Val 13-OCT-2011
  HP I64VMS C V7.3-19                  Full LP     Remove       -  13-OCT-2011
  HP I64VMS C V7.3-19                  Full LP     Install     Val 13-OCT-2011

How is **networking** configured?

<code>
$ show symbol netinfo
  NETIN*FO == "PIPE show net /full | SEARCH sys$pipe decnet,dna,version"
$ netinfo
Product:  DECNET                Manufacturer:  Hewlett-Packard Company

Identification           = HP DECnet for OpenVMS I64
Management version       = V4.0.0
NSP version              = V4.1.0
Routing version          = V2.0.0
Network Type:  DNA IV           Interface(s):  net 0

  HP TCP/IP Services for OpenVMS Industry Standard 64 Version V5.7 - ECO 5
</code>

===== Add Your Own Ideas for Pipes =====

These should give you some ideas for pipe-commands of your own.