Top Forums UNIX for Dummies Questions & Answers Need advice! Removing multiple entries in a single file! Post 302377842 by jsmithstl on Saturday 5th of December 2009 12:28:09 PM
another way:
awk -F" " '{if($1!=$5||$2!=$6||$3!=$7||$4!=$8){print $0}}' test.txt
1g12 A 14 19 2OAY A 326 331 AAAASA
1l7v A 68 73 1XVW B 72 77 AALAIS
1l7v A 68 73 1XXU A 65 70 AALAIS
1l7v A 68 73 1XXU B 65 70 AALAIS
1l7v A 68 73 1XXU C 65 70 AALAIS
1l7v A 68 73 1XXU D 65 70 AALAIS
1j1n A 439 444 1FUI B 360 365 ADVRTY

Yours would've worked if you remove the " after $9.

Last edited by jsmithstl; 12-05-2009 at 02:32 PM.. Reason: FYI on your original code
Test Your Knowledge in Computers #936
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VOP_ADVISE(9)						   BSD Kernel Developer's Manual					     VOP_ADVISE(9)

VOP_ADVISE -- apply advice about use of file data SYNOPSIS
#include <sys/param.h> #include <sys/vnode.h> int VOP_ADVISE(struct vnode *vp, off_t start, off_t end, int advice); DESCRIPTION
This call applies advice for a range of a file's data. It is used to implement the posix_fadvise system call. Its arguments are: vp The vnode of the file. start The start of the range of file data. end The end of the range of file data. advice The type of operation to apply to the file data. Possible values are: POSIX_FADV_WILLNEED Initiate an asynchronous read of the file data if it is not already resident. POSIX_FADV_DONTNEED Decrease the in-memory priority of clean file data or discard clean file data. If the start and end offsets are both zero, then the operation should be applied to the entire file. Note that this call is advisory only and may perform the requested operation on a subset of the requested range (including not performing it at all) and still return success. LOCKS
The file should be unlocked on entry. RETURN VALUES
Zero is returned if the call is successful, otherwise an appropriate error code is returned. ERRORS
[EINVAL] An invalid value was given for advice. SEE ALSO
vnode(9) BSD
October 3, 2013 BSD

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