bash script bugs

[Sergey Ivanov]

Have a script:
#!/usr/bin/bash
f="$(ls $1)"
for v_file in "$f"; do
  echo $v_file
done
named FileGroupContentsChange.sh.

Twos things do not work as they should. By order:
1) Output in command line for nest commands
  ls /cygdrive/d/install/buf/*.html
  dir /cygdrive/d/install/buf/*.html
is same:
/cygdrive/d/install/buf/a.html
/cygdrive/d/install/buf/b.html

while output for ./FileGroupContentsChange.sh
/cygdrive/d/install/buf/*.html is only
/cygdrive/d/install/buf/a.html


2) (not critical but not "classical") Both command line script and
outputs for current folder in one line:
ls returns
FileGroupContentsChange.sh  cygcheck.out  sources
and so ./FileGroupContentsChange.sh do

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