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Top Forums Shell Programming and Scripting To check the missing file based on sequence number. Post 302971617 by andy391791 on Friday 22nd of April 2016 11:20:11 AM
Old 04-22-2016
List unsequenced files

Hi, the following works in ksh.

Assumptions are that the format of the file name is file_{num}.txt and that the file numbers are all 3 digits.

Code:
#!/bin/ksh

#Do a file listing and count and set variables

ls FILE* > answers.txt
tot_line=`wc -l answers.txt | awk '{print $1}'`
typeset -Z3 file_missing
current_line=1
next_line=2

#loop through list of files getting the file number

while [ $current_line -lt $tot_line ]
do
current_file=`awk 'NR=='$current_line'' answers.txt | sed 's/\(.*_\)\(.*[0-9]\)\
(.*$\)/\2/'`
next_file=`awk 'NR=='$next_line'' answers.txt | sed 's/\(.*_\)\(.*[0-9]\)\(.*$\)
/\2/'`

#find out if files are sequential

sequence=`expr $next_file - $current_file`

#If files not sequential start loop to print list of unsequential files

if [ $sequence -ne 1 ]
then
curr_file=$current_file
while [ $sequence -gt 1 ]
do

file_missing=`expr $curr_file + 1`
curr_file=`expr $curr_file + 1`

echo "FILE_$file_missing.txt is missing"
sequence=`expr $sequence - 1`
done

fi

current_line=`expr $current_line + 1`
next_line=`expr $next_line + 1`

done

output

FILE_003.txt is missing
FILE_004.txt is missing
FILE_007.txt is missing
FILE_011.txt is missing
FILE_012.txt is missing
FILE_013.txt is missing
 

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unix2dos(1)						      General Commands Manual						       unix2dos(1)

NAME
unix2dos - UNIX to DOS text file format converter SYNOPSYS
unix2dos [options] [-c convmode] [-o file ...] [-n infile outfile ...] Options: [-hkqV] [--help] [--keepdate] [--quiet] [--version] DESCRIPTION
This manual page documents unix2dos, the program that converts text files in UNIX format to DOS format. OPTIONS
The following options are available: -h --help Print online help. -k --keepdate Keep the date stamp of output file same as input file. -q --quiet Quiet mode. Suppress all warning and messages. -V --version Prints version information. -c --convmode convmode Sets conversion mode. Simulates unix2dos under SunOS. -o --oldfile file ... Old file mode. Convert the file and write output to it. The program default to run in this mode. Wildcard names may be used. -n --newfile infile outfile ... New file mode. Convert the infile and write output to outfile. File names must be given in pairs and wildcard names should NOT be used or you WILL lost your files. EXAMPLES
Get input from stdin and write output to stdout. unix2dos Convert and replace a.txt. Convert and replace b.txt. unix2dos a.txt b.txt unix2dos -o a.txt b.txt Convert and replace a.txt in ASCII conversion mode. Convert and replace b.txt in ISO conversion mode. unix2dos a.txt -c iso b.txt unix2dos -c ascii a.txt -c iso b.txt Convert and replace a.txt while keeping original date stamp. unix2dos -k a.txt unix2dos -k -o a.txt Convert a.txt and write to e.txt. unix2dos -n a.txt e.txt Convert a.txt and write to e.txt, keep date stamp of e.txt same as a.txt. unix2dos -k -n a.txt e.txt Convert and replace a.txt. Convert b.txt and write to e.txt. unix2dos a.txt -n b.txt e.txt unix2dos -o a.txt -n b.txt e.txt Convert c.txt and write to e.txt. Convert and replace a.txt. Convert and replace b.txt. Convert d.txt and write to f.txt. unix2dos -n c.txt e.txt -o a.txt b.txt -n d.txt f.txt DIAGNOSTICS
BUGS
The program does not work properly under MSDOS in stdio processing mode. If you know why is that so, please tell me. AUTHOR
Benjamin Lin - ( blin@socs.uts.edu.au ) MISCELLANY
Tested environment: Linux 1.2.0 with GNU C 2.5.8 SunOS 4.1.3 with GNU C 2.6.3 MS-DOS 6.20 with Borland C++ 4.02 Suggestions and bug reports are welcome. SEE ALSO
dos2unix(1) 1995.03.31 unix2dos v2.2 unix2dos(1)
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