The command:

Code:

ls -1 *<process_instance>*.dat

will not work with any shell I have ever used. The literal < and > characters in your filename matching pattern will be interpreted as redirection operators; not as characters to be found in your pathnames. If you don't intend for those to be literal characters in the names of the files you want to process, you need to be much clearer in what names you are trying to match.

Assuming that you're using a shell based on Bourne shell syntax and you really do want to process files in the current working directory whose names contain the literal string <process_instance> and end in the literal string .dat, try:

Code:

for file in *'<process_instance>'*.dat
do	zip -9 "$file".zip "$file" && rm "$file"
done

Note that unlike the two commands you are using, this loop will not remove files that were not successfully zipped.

Note that unlike the two commands you are using, this loop will correctly process files even if filenames contain whitespace characters or characters that are special filename pattern matching characters (like *, ?, and [).