11-18-2008
About \ (Back slash)
Hi All,
print "path/executable_file parameters" \
> path/file1
print "path/executable_file parameters" \
> path/file2
print "path/executable_file parameters" \
> path/file3
chmod 775 path/file1 \
path/file2 \
path/file3
could you please let me know how the back slash will be useful and its effect in using in the shell script.
please explain how its working in the above print and chmod.
i read some documents about back slash
"preceding the same string with a backslash, \, also removes the special meaning of a character, or string".
i am not getting what it is actually doing.
please let me know.
Thanks.
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JLS(8) BSD System Manager's Manual JLS(8)
NAME
jls -- list jails
SYNOPSIS
jls [-dhNnqsv] [-j jail] [parameter ...]
DESCRIPTION
The jls utility lists all active jails, or the specified jail. Each jail is represented by one row which contains space-separated values of
the listed parameters, including the pseudo-parameter all which will show all available jail parameters. A list of available parameters can
be retrieved via ``sysctl -d security.jail.param''. See jail(8) for a description of some core parameters.
If no parameters or any of the options -hns are given, the following four columns will be printed: jail identifier (jid), IP address
(ip4.addr), hostname (host.hostname), and path (path).
The following options are available:
-d List dying as well as active jails.
-h Print a header line containing the parameters listed. If no parameters are given on the command line, all is assumed.
-N In the standard display mode, print each jail's name instead of its numeric ID. If the jail does not have a name, the numeric ID is
printed instead.
-n Print parameters in ``name=value'' format, where each parameter is preceded by its name. If no parameters are given on the command
line, all is assumed.
-q Put quotes around parameters if they contain spaces or quotes, or are the empty string.
-s Print parameters suitable for passing to jail(8), skipping read-only and unused parameters. Implies -nq.
-v Print a multiple-line summary per jail, with the following parameters: jail identifier (jid), hostname (host.hostname), path (path),
jail name (name), jail state (dying), cpuset ID (cpuset), IP address(es) (ip4.addr and ip6.addr).
-j jail
The jid or name of the jail to list. Without this option, all active jails will be listed.
SEE ALSO
jail_get(2), jail(8), jexec(8)
HISTORY
The jls utility was added in FreeBSD 5.1. Extensible jail parameters were introduced in FreeBSD 8.0.
BSD
July 20, 2012 BSD