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Top Forums Shell Programming and Scripting Replacing numbers in bash scripts Post 302424542 by bluesmodular on Tuesday 25th of May 2010 02:35:34 PM
Old 05-25-2010
CPU & Memory Replacing numbers in bash scripts

Hi,

I have lines in some files that look exactly as below, and the line numbers they occur in are always the same. (Lines 136-139)

W 0.00000000 0.00000000 2.00000000
W 0.50000000 0.50000000 2.50000000
W 0.00000000 0.00000000 3.00000000
W 0.50000000 0.50000000 3.50000000

I'd like to replace the last number in each row for each file by numbers related to the variable $vacheight, so that the median of these 4 numbers is always half of $vacheight.

The files are all named "run_example", but are in different folders named "examples#" where # is a number from 140 to 199.

As a related example, Line 117 reads:
Code:
  celldm(3)   = 5.000,

Below is the relevant section of code that works for Line 117 and increments the number on Line 117 by 0.1 each time, in a different folder.

Code:
vacheight=`expr 4.500`
for i in */run_example; do
    printf '117s/= [^,]*/= %s/\nwq\n' "$vacheight" | ed -s "$i"
    vacheight=$(echo "scale=3; $vacheight + 0.100" | bc)
done

Thank you very much for your help!
 

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IPSEC_KLIPSDEBUG(5)						  [FIXME: manual]					       IPSEC_KLIPSDEBUG(5)

NAME
ipsec_klipsdebug - list KLIPS (kernel IPSEC support) debug features and level SYNOPSIS
ipsec klipsdebug cat/proc/net/ipsec_klipsdebug DESCRIPTION
/proc/net/ipsec_klipsdebug lists flags that control various parts of the debugging output of KLIPS and MAST, two of the IPsec stacks supported by Openswan. At this point it is a read-only file. A table entry consists of: + a KLIPS debug variable + a '=' separator for visual and automated parsing between the variable name and its current value + hexadecimal bitmap of variable's flags. The variable names roughly describe the scope of the debugging variable. Currently, no flags are documented or individually accessible yet except tunnel-xmit. The variable names are: tunnel tunnelling code netlink userspace communication code (obsolete) xform transform selection and manipulation code eroute eroute table manipulation code spi SA table manipulation code radij radij tree manipulation code esp encryptions transforms code ah authentication transforms code rcv receive code ipcomp ip compression transforms code verbose give even more information, beware this will probably trample the 4k kernel printk buffer giving inaccurate output All KLIPS debug output appears as kernel.info messages to syslogd(8). Most systems are set up to log these messages to /var/log/messages. EXAMPLES
debug_tunnel=00000010. debug_netlink=00000000. debug_xform=00000000. debug_eroute=00000000. debug_spi=00000000. debug_radij=00000000. debug_esp=00000000. debug_ah=00000000. debug_rcv=00000000. debug_pfkey=ffffffff. means that one tunnel flag has been set (tunnel-xmit), full pfkey sockets debugging has been set and everything else is not set. FILES
/proc/net/ipsec_klipsdebug, /usr/local/bin/ipsec SEE ALSO
ipsec(8), ipsec_manual(8), ipsec_tncfg(8), ipsec_eroute(8), ipsec_spi(8), ipsec_spigrp(8), ipsec_klipsdebug(5), ipsec_version(5), ipsec_pf_key(5) HISTORY
Written for the Linux FreeS/WAN project <http://www.freeswan.org/> by Richard Guy Briggs. [FIXME: source] 10/06/2010 IPSEC_KLIPSDEBUG(5)
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