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Top Forums UNIX for Beginners Questions & Answers Urgent.!!! Multiple if within while loop ksh Post 303038796 by Corona688 on Friday 13th of September 2019 11:27:15 AM
Old 09-13-2019
One way to break a huge logic statement like that into several smaller ones is:

Code:
while read filename
do
        REMOVE=0

        if [ ! condition1 ]
        then
                REMOVE=1
        fi


        if [ ! condition2 ]
        then
                REMOVE=1
        fi


        if [ ! condition3 ]
        then
                REMOVE=1
        fi

        if [ "$REMOVE" -eq 1 ]
        then
                remove_filename
        fi
done

 

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REMOVE(3)						     Linux Programmer's Manual							 REMOVE(3)

NAME
remove - remove a file or directory SYNOPSIS
#include <stdio.h> int remove(const char *pathname); DESCRIPTION
remove() deletes a name from the file system. It calls unlink(2) for files, and rmdir(2) for directories. If the removed name was the last link to a file and no processes have the file open, the file is deleted and the space it was using is made available for reuse. If the name was the last link to a file, but any processes still have the file open, the file will remain in existence until the last file descriptor referring to it is closed. If the name referred to a symbolic link, the link is removed. If the name referred to a socket, FIFO, or device, the name is removed, but processes which have the object open may continue to use it. RETURN VALUE
On success, zero is returned. On error, -1 is returned, and errno is set appropriately. ERRORS
The errors that occur are those for unlink(2) and rmdir(2). CONFORMING TO
C89, C99, 4.3BSD, POSIX.1-2001. NOTES
Under libc4 and libc5, remove() was an alias for unlink(2) (and hence would not remove directories). BUGS
Infelicities in the protocol underlying NFS can cause the unexpected disappearance of files which are still being used. SEE ALSO
rm(1), unlink(1), link(2), mknod(2), open(2), rename(2), rmdir(2), unlink(2), mkfifo(3), symlink(7) COLOPHON
This page is part of release 3.44 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. GNU
2008-12-03 REMOVE(3)
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