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Top Forums Shell Programming and Scripting CUT command not giving correct result inside loop Post 302987053 by MadeInGermany on Sunday 4th of December 2016 06:10:21 AM
Old 12-04-2016
The for loop should end with a simple done.
Indeed a for loop is made to cycle through a list in memory; if the list is made from a file then the whole file must fit into memory.
In contrast, a while-read loop reads a file line by line. Most efficient if you can read each field into a distinct variable.
Quoting a lone $var in an assignment is not needed.
Code:
OLDIFS=$IFS
IFS=$OLDIFS

But quoting is a must in command arguments
Code:
if [ -n "$var" ]; then echo "$var"; fi


Last edited by MadeInGermany; 12-04-2016 at 07:17 AM..
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quot(1M)                                                  System Administration Commands                                                  quot(1M)

NAME
quot - summarize file system ownership SYNOPSIS
quot [-acfhnv] filesystem... quot -a [-cfhnv] DESCRIPTION
quot displays the number of blocks (1024 bytes) in the named filesystem (one or more) currently owned by each user. There is a limit of 2048 blocks. Files larger than this will be counted as a 2048 block file, but the total block count will be correct. OPTIONS
The following options are supported: -a Generate a report for all mounted file systems. -c Display three columns giving a file size in blocks, the number of files of that size, and a cumulative total of blocks containing files of that size or a smaller size. -f Display three columns giving, for each user, the number of blocks owned, the count of number of files, and the user name. This option is incompatible with the -c and -v options. -h Estimate the number of blocks in the file. This does not account for files with holes in them. -n Attach names to the list of files read from standard input. quot -n cannot be used alone, because it expects data from standard input. For example, the pipeline ncheck myfilesystem | sort +0n | quot -n myfilesystem will produce a list of all files and their owners. This option is incompatible with all other options. -v In addition to the default output, display three columns containing the number of blocks not accessed in the last 30, 60, and 90 days. OPERANDS
filesystem mount-point of the filesystem(s) being checked USAGE
See largefile(5) for the description of the behavior of quot when encountering files greater than or equal to 2 Gbyte ( 2**31 bytes). EXIT STATUS
0 Successful operation. 32 Error condition (bad or missing argument, bad path, or other error). FILES
/etc/mnttab Lists mounted file systems. /etc/passwd Used to obtain user names ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
du(1), mnttab(4), passwd(4), attributes(5), largefile(5) NOTES
This command can only be used by the super-user. SunOS 5.10 30 May 2001 quot(1M)
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