Advanced Bash−Scripting Guide

Advanced Bash−Scripting Guide
OUTFILE=symlinks.list
# save file
directory=${1−`pwd`}
# Defaults to current working directory,
#+ if not otherwise specified.
echo "symbolic links in directory \"$directory\"" > "$OUTFILE"
echo "−−−−−−−−−−−−−−−−−−−−−−−−−−−" >> "$OUTFILE"
for file in "$( find $directory −type l )" # −type l = symbolic links
do
echo "$file"
done | sort >> "$OUTFILE"
# stdout of loop
# ^^^^^^^^^^^^^ redirected to save file.
exit 0
There is an alternative syntax to a for loop that will look very familiar to C programmers. This
requires double parentheses.
Example 10−12. A C−like for loop
#!/bin/bash
# Two ways to count up to 10.
echo
# Standard syntax.
for a in 1 2 3 4 5 6 7 8 9 10
do
echo −n "$a "
done
echo; echo
# +==========================================+
# Now, let's do the same, using C−like syntax.
LIMIT=10
for ((a=1; a