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boundary="------------BBgLxNVrM7dNC3BkrLJGZDEA" Message-id: <75784205-3d78-4dd8-8474-e2eb48598307@eastlink.ca> Date: Tue, 21 May 2024 10:42:24 -0700 MIME-version: 1.0 User-Agent: Mozilla Thunderbird Content-language: en-US To: Zsh Users From: Ray Andrews Subject: the splits X-Seq: 29959 Archived-At: X-Loop: zsh-users@zsh.org Errors-To: zsh-users-owner@zsh.org Precedence: list Precedence: bulk Sender: zsh-users-request@zsh.org X-no-archive: yes List-Id: List-Help: , List-Subscribe: , List-Unsubscribe: , List-Post: List-Owner: List-Archive: This is a multi-part message in MIME format. --------------BBgLxNVrM7dNC3BkrLJGZDEA Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit A function of mine might need to unmount someting.  If there's a problem I try to be helpful: umount -v "$mountpoint" || {     # Helpful diagnostics if partition won't unmount:     echo "\nCan't unmount $mountpoint.  Is a terminal logged on? Or is it one of these programs:?\n(Please wait or press '^C' to quit.)"     abc=$(lsof | grep $mountpoint)     abc=( ${(f)abc} )     for def in $abc[@]; do ghi=( ${=def} ); print -- "$ghi[1]\t$ghi[-1]\n"; done     return } Typical run: % mnt ,U sda Unmounting partitions ... umount: /mnt/sda/1: target is busy. Can't unmount /mnt/sda/1.  Is a terminal logged on?  Or is it one of these programs:? (Please wait or press '^C' to quit.) zsh      /mnt/sda/1/EFI/BOOT geany    /mnt/sda/1/EFI/BOOT geany    /mnt/sda/1/EFI/BOOT geany    /mnt/sda/1/EFI/BOOT ---------------------------------------------------- ... works fine but I'll bet: abc=$(lsof | grep $mountpoint) abc=( ${(f)abc} ) for def in $abc[@]; do ghi=( ${=def} ); print -- "$ghi[1]\t$ghi[-1]\n"; done ... is belabored.   Can that be streamlined?  As always my splitting is a problem.  I need to process line by line, but then word by word so as to grab just the first and last words from 'lsof' output.  I'll bet Roman can do all of the above in 20 characters. --------------BBgLxNVrM7dNC3BkrLJGZDEA Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit A function of mine might need to unmount someting.  If there's a problem I try to be helpful:


umount -v "$mountpoint" ||
{
    # Helpful diagnostics if partition won't unmount:
    echo "\nCan't unmount $mountpoint.  Is a terminal logged on?  Or is it one of these programs:?\n(Please wait or press '^C' to quit.)"

    abc=$(lsof | grep $mountpoint)
    abc=( ${(f)abc} )
    for def in $abc[@]; do ghi=( ${=def} ); print -- "$ghi[1]\t$ghi[-1]\n"; done
    return
}       

Typical run:


% mnt ,U sda

Unmounting partitions ...
umount: /mnt/sda/1: target is busy.

Can't unmount /mnt/sda/1.  Is a terminal logged on?  Or is it one of these programs:?
(Please wait or press '^C' to quit.)

zsh      /mnt/sda/1/EFI/BOOT
geany    /mnt/sda/1/EFI/BOOT
geany    /mnt/sda/1/EFI/BOOT
geany    /mnt/sda/1/EFI/BOOT

----------------------------------------------------

... works fine but I'll bet:

abc=$(lsof | grep $mountpoint)
abc=( ${(f)abc} )
for def in $abc[@]; do ghi=( ${=def} ); print -- "$ghi[1]\t$ghi[-1]\n"; done

... is belabored.   Can that be streamlined?  As always my splitting is a problem.  I need to process line by line, but then word by word so as to grab just the first and last words from 'lsof' output.  I'll bet Roman can do all of the above in 20 characters.


 --------------BBgLxNVrM7dNC3BkrLJGZDEA--