I'm writing a script that can be called on itself, and must be able to pass arguments down to itself properly.
The regular usage of the script is as follows:
Code:
myfun cmd1 'options1' cmd2 'options2' input
If you're interested, the nuts and bolts of this function simply compare the outputs of the 2 cmd#'s using their respective options and the same input on both. For example:
Code:
myfun cat '' cat '' input
Will essentially compare input to itself, whereas:
The expected output doesn't come out. I get errors from the cat calls in the inner myfun calls reading something like:
Code:
cat: '': No such file or directory
What I'm getting from this is that when I use "cat '' cat '-n'" as an argument, it's really using "cat \'\' cat \'-n\'" or something similar, causing the quotes to remain in place in the inner calls.
I can post some code if that would help anyone in diagnosing this problem for me.
Alright, the code is a bit lengthy and redundant, so I think I'll keep it simple. I'll replace parts that aren't relevant with comments, just so you know what's going on.
Code:
checkExec() {
# checks if argument is a valid, executable command or file
# (sets $cmd variable to result, checked below)
}
# if [ help flag ] show help message
# if [ ${#} is not 5 ] show error message
# else
# check first command, ${1}, using checkExec
# if invalid, halt
# else
p1=${cmd}
p1o=${2}
# check second command, ${3}, using checkExec
# if invalid, halt
# else
p2=${cmd}
p2o=${4}
shift 4
# loop through input files
# make some (unique) tmp files to store data in
# save tmp paths in ${out1} and ${out2}
${p1} ${p1o} ${1} > ${out1} 2>&1
${p2} ${p2o} ${1} > ${out2} 2>&1
# compare out1 and out2 using diff
# echo something depending on what diff returns
# remove tmp files (out1, out2)
shift
# end loop
# fi
# fi
# fi
Like I said before, this works fine for simple calls like:
I am trying to pass a second argument like so:
if ] then
export ARG2=$2
else
message "Second argument not specified: USAGE - $PROGRAM_NAME ARG1 ARG2"
checkerror -e 2 -m "Please specify if it is a history or weekly (H or W) extract in the 2nd argument"
fi
however, it always goes... (4 Replies)
Hi
I have a script which am trying to pass an argument which am trying to call using $1 but its not taking the value inside the if loop as it showing the error as if: Empty if..
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09-28-2010
