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kchashmgr - Online in the Cloud

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This is the command kchashmgr that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


kchashmgr - command line interface to manage the file hash database

DESCRIPTION


The command `kchashmgr' is a utility for test and debugging of the file hash database and
its applications. `path' specifies the path of a database file. `key' specifies the key
of a record. `value' specifies the value of a record. `file' specifies the input/output
file.

kchashmgr create [-otr] [-onl|-otl|-onr] [-apow num] [-fpow num] [-ts] [-tl] [-tc]
[-bnum num] path
Creates a database file.
kchashmgr inform [-onl|-otl|-onr] [-st] path
Prints status information.
kchashmgr set [-onl|-otl|-onr] [-add|-app|-rep|-inci|-incd] [-sx] path key value
Stores a record.
kchashmgr remove [-onl|-otl|-onr] [-sx] path key
Removes a record.
kchashmgr get [-onl|-otl|-onr] [-rm] [-sx] [-px] [-pz] path key
Prints the value of a record.
kchashmgr list [-onl|-otl|-onr] [-max num] [-rm] [-sx] [-pv] [-px] path [key]
Prints keys of all records, separated by line feeds.
kchashmgr clear [-onl|-otl|-onr] path
Removes all records of a database.
kchashmgr import [-onl|-otl|-onr] [-sx] path [file]
Imports records from a TSV file.
kchashmgr copy [-onl|-otl|-onr] path file
Copies the whole database.
kchashmgr dump [-onl|-otl|-onr] path [file]
Dumps records into a snapshot file.
kchashmgr load [-otr] [-onl|-otl|-onr] path [file]
Loads records from a snapshot file.
kchashmgr defrag [-onl|-otl|-onr] path
Performs defragmentation.
kchashmgr setbulk [-onl|-otl|-onr] path key value ...
Store records at once.
kchashmgr removebulk [-onl|-otl|-onr] [-sx] path key ...
Remove records at once.
kchashmgr getbulk [-onl|-otl|-onr] [-sx] [-px] path key ...
Retrieve records at once.
kchashmgr check [-onl|-otl|-onr] path
Checks consistency.

Options feature the following.

-otr : opens the database with the truncation option.
-onl : opens the database with the no locking option.
-otl : opens the database with the try locking option.
-onr : opens the database with the no auto repair option.
-apow num : specifies the power of the alignment of record size.
-fpow num : specifies the power of the capacity of the free block pool.
-ts : tunes the database with the small option.
-tl : tunes the database with the linear option.
-tc : tunes the database with the compression option.
-bnum num : specifies the number of buckets of the hash table.
-st : prints miscellaneous information.
-add : performs adding operation.
-app : performs appending operation.
-rep : performs replacing operation.
-inci : performs integer increment operation.
-incd : performs real number increment operation.
-sx : the input data is evaluated as a hexadecimal data string.
-rm : removes the record.
-px : the output data is converted into a hexadecimal data string.
-pz : does not append line feed at the end of the output.
-max num : specifies the maximum number of shown records.
-pv : prints values of records also.

This command returns 0 on success, another on failure.

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