On Sat, 4 Aug 2007, Andris wrote:
> Hi, I'm writing a set of small utilities as scripts, and I got a
> segmentation fault working on one of them.
I tried running your script but it did not produce any seg faults.
Do you have example input that causes a seg fault?
-Otto
>
> The script is suppoused to align text with spaces. Say you have this file:
>
> Foo1\tFoo2
> Baaaaaaaaaaaar\tBar2
> Baz
>
> Where \t are horizontal tabs. My script would replace the tabs with an
> adequate number of spaces to align foo2 and bar2.
>
> Right now it works with a file named "file" in the working directory.
> Of course this is only temporal.
>
> The problem is that I get a segmentation fault when I run it. That
> never happened to me with a shell script. And I can't see where should
> be a problem.
>
> I'm running OpenBSD 4.1-stable, GENERIC, i386. I don't know if it's
> important, but I didn't create a swap partition (I'm planning to
> change this).
>
> If someone could light me, I'd be very grateful.
>
> Here is the script:
>
> #!/bin/sh
>
> IFS='
> '
>
> file=file
>
> for line in `< "${file}"`; do
>
> fields=`printf '%s' "${line}" | sed 's/[^ ]//g' | wc -m`
> fields=$((${fields} + 1))
>
> if [ "${fields}" -eq 1 ]; then
> printf '%s' "${line}"
> else
> for field in `jot "${fields}"`; do
> max_width=`cut -f "${field}" "${file}" | awk '{ l =
> length($0); if
> (l > m) m = l } END { print m }'`
> width=`printf '%s' "${line}" | cut -f "${field}" | awk
> '{ print
> length($0) }'`
>
> printf '%s' "`printf '%s' "${line}" | cut -f
> "${field}"`"
>
> if [ "${field}" -lt "${fields}" ]; then
> for i in `jot "$((${max_width} - ${width}))"`;
> do
> printf '.'
> done
> fi
> done
> fi
>
> printf '\n'
> done
