How does one enable the SQL*Plus HELP facility?

Oracle SQL*Plus help



cd $ORACLE_HOME/sqlplus/admin/help


oracle@apt-amd-02:/opt/app/oracle/product/11.2/sqlplus/admin/help> ls -ltr
total 80
-rw-r--r-- 1 oracle oinstall 337 2000-06-28 01:30 helpdrop.sql
-rw-r--r-- 1 oracle oinstall 265 2003-02-16 20:47 helpbld.sql
-rw-r--r-- 1 oracle oinstall 2086 2009-01-05 20:07 hlpbld.sql
-rw-r--r-- 1 oracle oinstall 65975 2009-06-28 21:54 helpus.sql



oracle@apt-amd-02:/opt/app/oracle/product/11.2/sqlplus/admin/help> sqlplus system/sys @hlpbld.sql helpus.sql



select info
from system.help
where upper(topic)=upper('&1')
/




Enter value for 1: COLUMN
old 1: select info from system.help where upper(topic)=upper('&1')
new 1: select info from system.help where upper(topic)=upper('COLUMN')

INFO
--------------------------------------------------------------------------------

COLUMN
------

Specifies display attributes for a given column, such as:
- text for the column heading
- alignment for the column heading
- format for NUMBER data
- wrapping of column data
Also lists the current display attributes for a single column
or all columns.

COL[UMN] [{column | expr} [option ...] ]

where option represents one of the following clauses:
ALI[AS] alias
CLE[AR]
ENTMAP {ON|OFF}
FOLD_A[FTER]
FOLD_B[EFORE]
FOR[MAT] format
HEA[DING] text
JUS[TIFY] {L[EFT] | C[ENTER] | R[IGHT]}
LIKE {expr | alias}
NEWL[INE]
NEW_V[ALUE] variable
NOPRI[NT] | PRI[NT]
NUL[L] text
OLD_V[ALUE] variable
ON|OFF
WRA[PPED] | WOR[D_WRAPPED] | TRU[NCATED]


32 rows selected.