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Top Forums Shell Programming and Scripting Why is this command not working? (sed) Post 302955954 by funksen on Thursday 24th of September 2015 05:35:26 AM
Old 09-24-2015
Why is this command not working? (sed)

Hi guys,

the command is

Code:
 echo "Online Memory                              : 32768 MB" | sed 's/.*\([0-9]+\).*/\1/'

I would expect it to print 32768, it cuts off any character to the first digit, then gets all digits in 1, cuts off the rest after the digits, and should print 32768, instead it prints everything again


of course in this case, the easiest thing would be
Code:
echo "Online Memory                              : 32768 MB" | sed 's/[^0-9]//g'

but I'm just curious why the first command doesn't work

thanks in advance

funksen
 

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sctp_test(1)						      General Commands Manual						      sctp_test(1)

NAME
sctp_test - Send and receive messages via SCTP SYNOPSIS
sctp_test -H -P -h -p -l|s DESCRIPTION
This is a userspace test application for the SCTP Linux kernel reference implementation. OPTIONS
-H local-addr -P local-port -h remote-addr -p remote-port -s Act as client -l Listen for connections (server) -a assoc_pattern assoc_pattern in the mixed mode 0 = sequential ascending(default) 1 = random -d debug 0 = none 1 = min(default) 2 = max -c testcase 0 = 1 byte packets. 1 = 1352 byte packets. (fragmentation point for an i/f with 1500 as mtu.) 2 = 1353 byte packets. (min. size at which fragmentation occurs for an i/f with 1500 as mtu.) 3 = Sequence of 1, 1353, 32768 byte packets. 4 = Sequence of following size packets. (1, 1000, 2000, 3000, 5000, 10000,15000, 20000, 25000, 32768) 5 = 32768 byte packets. (default max receive window size.) 6 = random size packets. -ve value Packets of specifed size. -m msgsize (1500-65515, default value 32768) -x number_of_repeats -o order_pattern 0 = all unordered(default) 1 = all ordered 2 = alternating 3 = random -t stream_pattern 0 = sequential ascending(default) 1 = random -M max_stream (default value 0) -r seed (default 0, use time()) -L num_ports (default value 0). Run the mixed mode -S num_ports (default value 0). Run the mixed mode -D Drain. If in client mode do a read following send. USAGE
server: sctp_test -H local_addr -P local_port -l client: sctp_test -H local_addr -P local_port -h remote_addr -p remote-port -s AUTHOR
Michael Biebl <biebl@debian.org> sctp_test(1)
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