Question

write the bash script

Write a script compress_large_files.sh. This script accepts one or more command line arguments. The first argument has to be an integer; let’s call it size. If this is the only command line argument, compress_large_files.sh inspects all files in the current working directory and compresses every file of size at least size. If there is more than one command line argument, all arguments except the first one must be valid directories. In this case, compress_large_files.sh inspects the files in each of these directories and, once again, compresses every file of size at least size. If successful, your script should not produce any output on stdout. You script should produce the following error messages: • If the wrong number of command line arguments is given, a usage message USAGE: compress_large_files.sh size [dir ...] should be printed. • If the first argument is not a number, a message ERROR: xxx is not a number should be printed, where xxx is the argument provided by the user. • If any argument other than the first one is not a valid directory, a message ERROR: xxx is not a directory should be printed, where xxx is the argument in question. • If a directory to be searched for files or a file in such a directory cannot be read, a message ERROR: Cannot read file xxx should be printed, where xxx is the file or directory in question. Subdirectories of the current working directory or of the directories provided on the command line should not be search recursively and should be ignored silently.

Answer 1

#/bin/bash
size=$1
PASSED=$2

re='^[0-9]+$'
if ! [[ $size =~ $re ]] ; then
echo "ERROR: $size is not a number" >&2;
exit 1
fi

if ! [[ -d "${PASSED}" ]] ; then
echo "ERROR: $2 is not a directory" >&2;
exit 1
fi

if ! [[ -r $PASSED ]];
then
echo "ERROR: Cannot read file $PASSED"
exit 1
else
find $PASSED -type f ! -name '*.gz' -exec gzip "{}" \;
fi

there is some modification still remain you just check it out and let me know where changes needed as far as i know only size thing is remain because i do not know what it try to say as far as i know its saying that if size is 10 then less than 10 mb of file size should be zipped or greater than of 10 mb should be zipped ?

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