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Full Discussion: To check the missing file based on sequence number.
Top Forums Shell Programming and Scripting To check the missing file based on sequence number. Post 302971623 by Don Cragun on Friday 22nd of April 2016 02:30:44 PM
Old 04-22-2016
You might also try the following ksh script that just uses shell built-ins (so it runs a little faster than andy391791's script). And, unlike andy391791's script, it also adds some error checking code and will work with any shell that performs basic parameter expansions required by the POSIX standards instead of just working with a Korn shell. And, unlike looney's bash script, it will report missing files from the lowest numbered existing file with a name matching FILE_[0-9][0-9][0-9].txt to the highest numbered existing file with a name matching that pattern instead of just looking for missing files in the range 001 through 014.
Code:
#!/bin/ksh
first=1
missing=0

nextfile() {
	seq=$((seq + 1))
	next=$(printf 'FILE_%03d.txt' "$seq")
}

for i in FILE_[0-9][0-9][0-9].txt
do	if [ "$first" = 1 ]
	then	if [ ! -f "$i" ]
		then	printf 'No files matching pattern found.\n' >&2
			exit 1
		fi
		seq=${i#FILE_}
		seq=${seq#0}	# Avoid problems with some shells treating
		seq=${seq#0}	# numbers with leading zeros as octal.
		seq=${seq%.txt}
		first=
		continue
	fi
	nextfile
	while [ "$next" != "$i" ]
	do	printf '%s is missing\n' "$next"
		missing=$((missing + 1))
		nextfile
	done
done
if [ "$missing" = 0 ]
then	printf 'No missing files detected.\n'
fi

 

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LEARN ABOUT NETBSD

dh_missing

DH_MISSING(1)                                                        Debhelper                                                       DH_MISSING(1)

NAME

       dh_missing - check for missing files

SYNOPSIS

       dh_missing [-Xitem] [--sourcedir=dir] [debhelperoptions]

DESCRIPTION

       dh_missing compares the list of installed files with the files in the source directory. If any of the files (and symlinks) in the source
       directory were not installed to somewhere, it will warn on stderr about that (--list-missing) or fail (--fail-missing).  Please note that
       without either of these options, dh_missing will silently do nothing.

       This may be useful if you have a large package and want to make sure that you don't miss installing newly added files in new upstream
       releases.

       Remember to test different kinds of builds (dpkg-buildpackage -A/-B/...) as you may experience varying results when only a subset of the
       packages are built.

FILES

       debian/not-installed
           List the files that are deliberately not installed in any binary package.  Paths listed in this file are ignored by dh_missing.
           However, it is not a method to exclude files from being installed by any of the debhelper tool.  If you want a tool to not install a
           given file, please use its --exclude option (where available).

           dh_missing will expand wildcards in this file (since debhelper 11.1).  Wildcards without matches will be ignored.

OPTIONS

       --list-missing
           Warn on stderr about source files not installed to somewhere.

           Note that files that are excluded from being moved via the -X option are not warned about.

           This is the default in compat 12 and later.

       --fail-missing
           This option is like --list-missing, except if a file was missed, it will not only list the missing files, but also fail with a nonzero
           exit code.

SEE ALSO

       debhelper(7)

       This program is a part of debhelper.

AUTHOR

       Michael Stapelberg <stapelberg@debian.org>

11.1.6ubuntu2                                                       2018-05-10                                                       DH_MISSING(1)
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