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Top Forums Shell Programming and Scripting How to give a text file as input while running a program? Post 302755853 by jacobs.smith on Monday 14th of January 2013 03:12:18 PM
Old 01-14-2013
Quote:
Originally Posted by Don Cragun
Assuming that all output file names follow the same pattern as in your example, you don't need output.txt (the output file names can easily be created from input.txt). I use the Korn shell, but this will also work with bash, or any other shell that accepts basic Bourne shell syntax:
Code:
#!/bin/ksh
while read x y
do      echo /path/to/program -i "$x" "$y" -o /path/to/output/"op_$x_$y.txt"
done < input.txt

Try it with the echo to be sure it creates the commands you want to run; then remove the echo and rerun this script to run your program once for each line in input.txt.
Hi Don,

Thanks for the script.

But the $x value is not being printed in the output file name.

And also, my output file names might vary and they should be read from the output.txt file.

Any suggestions?
 

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RDUP-UP(1)							       rdup								RDUP-UP(1)

NAME
rdup-up - update a directory tree with a rdup archive SYNOPSIS
rdup-up [OPTION]... DIRECTORY DESCRIPTION
With rdup-up you can update an (possibly) existing directory structure with a rdup archive. The rdup archive has to be given to rdup-up's standard input. Username and uids rdup outputs both the username and uid, the receiving system (which may be a totally different system) checks if the username and uid match. If the username and uid don't match the (numeric) uid is used on the file. The same holds true for the groupname and gid. OPTIONS
-n Do a dry-run and do not create anything on disk. -t Create DIRECTORY (ala mkdir -p) if it does not exist. -s N Strip N path components from a pathname. If the resulting pathname is empty after this operation it is skipped. Be careful however with the following structure: /foo /foo/bar /foo/bar/bla.txt /foo/blork/bla.txt With rdup-up -s2 this will leave: <empty> <empty> /bla.txt /bla.txt And the last 'bla.txt' will overwrite the previous one, this will happen without warnings. -r PATH This option is related to the -s option, but works different. The string PATH is removed from (the beginning of) each pathname. With -r /home/backup the pathname /home/backup/bin/mycmd becomes /bin/mycmd. The same could be done with -s 2, but then you need to count the slashes. Note -s is always performed before -r. -v Be more verbose and echo the processed files to standard output. -vv Be even more verbose and echo processed file and the uid and gid information to standard output. -T Show a table of contents of the rdup stream received (ala tar -tf -). With -T the directory argument is optional. -T unsets any verbose (-v) options. -h A short help message. -V Show the version. EXIT CODE
rdup-up return a zero exit code on success, otherwise 1 is returned. AUTHOR
Written by Miek Gieben. REPORTING BUGS
Report bugs to <miek@miek.nl>. SEE ALSO
http:/www.miek.nl/projects/rdup/ is the main site of rdup. Also see rdup(1), rdup-tr(1) and rdup-backups(7). COPYRIGHT
Copyright (C) 2005-2010 Miek Gieben. This is free software. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Licensed under the GPL version 3. See the file LICENSE in the source distribution of rdup. 1.1.11 13 Dec 2008 RDUP-UP(1)
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