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Top Forums UNIX for Dummies Questions & Answers command to extract sub-string out of file names Post 302518168 by lv99 on Thursday 28th of April 2011 07:12:34 PM
Old 04-28-2011
command to extract sub-string out of file names

I have these files in a directory. It may have more class than the sample below:
DEPT_CHEM101LEC_D_20110301.DAT
DEPT_CHEM101LAB_D_20110301.DAT
DEPT_BIO105LEC_D_20110325.DAT
DEPT_BIO105LAB_D_20110325.DAT
DEPT_CSC308LEC_D_20110327.DAT
DEPT_CSC308LAB_D_20110327.DAT

Is there way to extract out unique "sub-string" as show below in a temp file?

CHEM101
BIO105
CSC308

Thanks
 

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dat_strerror(3DAT)				     Direct Access Transport Library Functions					dat_strerror(3DAT)

NAME
dat_strerror - convert a DAT return code into human readable strings SYNOPSIS
cc [ flag... ] file... -ldat [ library... ] #include <dat/udat.h> DAT_RETURN dat_strerror( IN DAT_RETURN return, OUT const char **major_message, OUT const char **minor_message ) PARAMETERS
return DAT function return value. message A pointer to a character string for the return. DESCRIPTION
The dat_strerror() function converts a DAT return code into human readable strings. The major_message is a string-converted DAT_TYPE_STA- TUS, while minor_message is a string-converted DAT_SUBTYPE_STATUS. If the return of this function is not DAT_SUCCESS, the values of major_message and minor_message are not defined. If an undefined DAT_RETURN value was passed as the return parameter, the operation fails with DAT_INVALID_PARAMETER returned. The operation succeeds when DAT_SUCCESS is passed in as the return parameter. RETURN VALUES
DAT_SUCCESS The operation was successful. DAT_INVALID_PARAMETER Invalid parameter. The return value is invalid. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard: uDAPL, 1.1, 1.2 | +-----------------------------+-----------------------------+ |MT-Level |Safe | +-----------------------------+-----------------------------+ SEE ALSO
libdat(3LIB), attributes(5) SunOS 5.10 16 Jul 2004 dat_strerror(3DAT)
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