02-15-2007
difference between double inverted coma and single inverted comma
Whats the basic difference between double inverted comma and single inverted comma and no comma applied at all?
Eg1 if [ -f "$filename" ]
Eg2 if [ -f $filename ]
iEg3 f [ -f '$filename' ]
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fspy(1) User Commands fspy(1)
NAME
fspy - filesystem activity monitoring tool
SYNOPSIS
fspy [options] [file/dir]
OPTIONS
-F, --filter STRING/REGEX
a string or regular expression which will be used to filter the output. (the regex will be matched against the whole path e.g.
[/etc/passwd])
-I, --inverted STRING/REGEX
its the same like -F/--filter but inverted. you can combine both. e.g. -F '.conf' -I 'wvdial.conf' will filter for files with
".conf" in its name but without "wvdial.conf" in it.
-R, --recursive NUMBER
enables the recursive engine to look at a depth of NUMBER.
-A, --adaptive
(HIGHLY-EXPERIMENTAL) enables the adaptive mode. e.g. if new items will be added within the path fspy will automatically add those
items to the watch list.
-D, --diff VALUE
(EXPERIMENTAL) enables the diffing feature. VALUE may be a comma separated list of: s - element size (byte) A - last access time
(e.g. Mon Jul 21 21:32:31 2008) M - last modification time (e.g. Mon Jul 21 21:32:31 2008) S - last status change time (e.g. Mon Jul
21 21:32:31 2008) O - permissions (octal) U - owner (uid) G - group (gid) I - inode number D - device id
-T, --type VALUE
specifies the type of objects to look for. VALUE may be a comma separated list of: f - regular file d - directory s - symlink p -
FIFO/pipe c - character device b - block device o - socket default is any.
-O, --output VALUE
specifies output format. VALUE may be a comma separated list of: f - filename p - path d - access description t - element type s -
element size (byte) w - watch descriptor (inotify manpage) c - cookie (inotify manpage) m - access mask (inotify manpage | src/fsev-
ents.h) l - len (inotify manpage) A - last access time (e.g. Mon Jul 21 21:32:31 2008) M - last modification time (e.g. Mon Jul 21
21:32:31 2008) S - last status change time (e.g. Mon Jul 21 21:32:31 2008) O - permissions (octal) U - owner (uid) G - group (gid) I
- inode number D - device id T - date and time (for this event) (e.g. Tue Mar 25 09:23:16 CET 2008) e.g.: '[,T,], ,d,:,p,f' would
result in: '[Mon Sep 1 12:31:25 2008] file was opened:/etc/passwd' (take a look at the README).
-h, --help
this short help.
--version
version information.
AUTHOR
fspy is Copyright 2008-2009, Richard Sammet
This manual page was written by Giuseppe Iuculano <giuseppe@iuculano.it>, for the Debian project (but may be used by others).
fspy 0.1.0 January 2009 fspy(1)