ASH is of course extremely limited, though it's amazing for what it is: Its source code is smaller than the compiled binaries of some other shells.
I thought globbing that way was a bash-ism but it seems to work in ksh too. Interesting.
I'd use string operations instead of glob-matching to test if a variable resides inside another in ASH. Replace the matching part with nothing, and if the resulting string is smaller, then it must have matched.
Last edited by Corona688; 09-09-2010 at 01:59 PM..
Reason: more quotes igor!
When I use Mac OS X's Terminal the UI is some what easier than that of Linux...
I this just a shell or something because using Bash is a pain in RH's Linux 9. It's so sensitive about case etc. ???
In that way what is the shell that OS X uses as it's default
Bash is on OS X (OK Duh) and... (3 Replies)
Hi,
For my bash script, terminal with bash is generate an OK output and program works right.
already,
terminal with ash have "line 48: syntax error: Bad substitution" output and program don't work.
:confused: (0 Replies)
Hi. I'm working with two BASH shells in order to perform two tasks. For simplicity, suppose that at Shell #1 I'm executing this program:
sleep 100
whose PID is 263. Meanwhile Shell #2 is waiting for its termination to follow with a second one.
I tried with:
wait 263
# Script for second... (4 Replies)
Hello all,
I have the following problem. In a Bash shell I run a program (I don't have the source code) which will execute some steps. At every step the program will wait for a user input. So I would like that another script which is running on a different shell will send these input togheter with... (4 Replies)
What is the practical difference among the different shell like
csh , ksh , bash etc.:confused::confused:
Please use descriptive subjects instead of single words (2 Replies)
I have a script that has to execute a read command in a function, this is in an ash busybox.
The code is...
trapcatch () { echo "Ctl-c Detected, what do you want to do?"
echo "Please choose the number of one of the following options"
echo "1. Jump past this Set"
echo "2. Exit... (8 Replies)
Hi All,
I have a script that I wrote on a bash shell, I use it to sort files from a directory into various other directories. I have an variable set, which is an array of strings, I then check each file against the array and if it is in there the script sorts it into the correct folder.
But... (5 Replies)
I wrote Bash script and now I want to convert it to Ash. One headache is this function:
do_adduser() {
setaddprompt
_arr_add=("Add manually" "Add via TXT" "return to main menu" "exit program")
select add_action in "${_arr_add}"
do
case "$REPLY" in
1)... (7 Replies)
I'm trying to convert this working bash script into an Ash script,
read -p "Username:" _username
if ! ]]; then
echo "Valid"
else
echo "INVALID"
fi
However, Ash does not recognize the "=~" character.
How can I do this?
Also, is there a good reference guide, so I... (5 Replies)
hello everybody,
i'm a beginner in ash and i want to convert this bash script to ash.
this script send a xml file to a nagios server :
#!/bin/bash
PROGNAME=$(basename $0)
RELEASE="Revision 0.3"
print_release() {
echo "$RELEASE"
}
print_usage() {
echo ""
echo "$PROGNAME... (6 Replies)
Discussion started by: mdijoux25
6 Replies
LEARN ABOUT MOJAVE
tc-ematch
ematch(8) Linux ematch(8)NAME
ematch - extended matches for use with "basic" or "flow" filters
SYNOPSIS
tc filter add .. basic match EXPR .. flowid ..
EXPR := TERM [ { and | or } EXPR ]
TERM := [ not ] { MATCH | '(' EXPR ')' }
MATCH := module '(' ARGS ')'
ARGS := ARG1 ARG2 ..
MATCHES
cmp
Simple comparison ematch: arithmetic compare of packet data to a given value.
cmp( ALIGN at OFFSET [ ATTRS ] { eq | lt | gt } VALUE )
ALIGN := { u8 | u16 | u32 }
ATTRS := [ layer LAYER ] [ mask MASK ] [ trans ]
LAYER := { link | network | transport | 0..2 }
meta
Metadata ematch
meta( OBJECT { eq | lt |gt } OBJECT )
OBJECT := { META_ID | VALUE }
META_ID := id [ shift SHIFT ] [ mask MASK ]
meta attributes:
random 32 bit random value
loadavg_1 Load average in last 5 minutes
nf_mark Netfilter mark
vlan Vlan tag
sk_rcvbuf Receive buffer size
sk_snd_queue Send queue length
A full list of meta attributes can be obtained via
# tc filter add dev eth1 basic match 'meta(list)'
nbyte
match packet data byte sequence
nbyte( NEEDLE at OFFSET [ layer LAYER ] )
NEEDLE := { string | c-escape-sequence }
OFFSET := int
LAYER := { link | network | transport | 0..2 }
u32
u32 ematch
u32( ALIGN VALUE MASK at [ nexthdr+ ] OFFSET )
ALIGN := { u8 | u16 | u32 }
ipset
test packet against ipset membership
ipset( SETNAME FLAGS )
SETNAME := string
FLAGS := { FLAG [, FLAGS] }
The flag options are the same as those used by the iptables "set" match.
When using the ipset ematch with the "ip_set_hash:net,iface" set type, the interface can be queried using "src,dst (source ip address, out-
going interface) or "src,src" (source ip address, incoming interface) syntax.
CAVEATS
The ematch syntax uses '(' and ')' to group expressions. All braces need to be escaped properly to prevent shell commandline from inter-
preting these directly.
When using the ipset ematch with the "ifb" device, the outgoing device will be the ifb device itself, e.g. "ifb0". The original interface
(i.e. the device the packet arrived on) is treated as the incoming interface.
EXAMPLE & USAGE
# tc filter add .. basic match ...
# 'cmp(u16 at 3 layer 2 mask 0xff00 gt 20)'
# 'meta(nfmark gt 24)' and 'meta(tcindex mask 0xf0 eq 0xf0)'
# 'nbyte("ababa" at 12 layer 1)'
# 'u32(u16 0x1122 0xffff at nexthdr+4)'
Check if packet source ip address is member of set named bulk:
# 'ipset(bulk src)'
Check if packet source ip and the interface the packet arrived on is member of "hash:net,iface" set named interactive:
# 'ipset(interactive src,src)'
AUTHOR
The extended match infrastructure was added by Thomas Graf.
iproute2 6 August 2012 ematch(8)