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UNIX for Dummies Questions & Answers
use variable for sed print line
Post 302115392 by reborg on Tuesday 24th of April 2007 12:26:14 PM
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10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
how to print any required line by its line no using awk and its NR variable
for eg:
------------
121343
adfdafd
21213sds
dafadfe432
adf.adf%adf
---------------
requied o/p if give num=3 it print:
21213sds
-------------------------------------- (2 Replies)
Discussion started by: RahulJoshi
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2. Shell Programming and Scripting
hello,
i have a file "TEST" and want to change the digit(s) after "=" . but i also want to print the old entry with a comment (for information).
i want to use "sed", is it possible ?
file:
TEST = 10 # comment default value: 0
sed , with "p" , i can print the old entry, but i want to... (2 Replies)
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2 Replies
3. Shell Programming and Scripting
I want to instert Category:XXXXX into the 2. line
something like this should work, but I have somewhere the wrong sytanx. something with the linebreak goes wrong:
sed "2i\\${n}Category:$cat\n"
Sample:
Titel Blahh Blahh abllk sdhsd sjdhf
Blahh Blah Blahh
Blahh
Should look like... (2 Replies)
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4. UNIX for Dummies Questions & Answers
I have a very large results file, and a list of filters
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5. Shell Programming and Scripting
Hi,
I want to print the line number with the pattern of the line on a same line using multi-patterns in sed.
But i don't know how to do it.
For example, I have a file
abc
def
ghi
I want to print
1 abc
2 def
3 ghi
I know how to write it one line code, but i don't know how to put... (11 Replies)
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6. Shell Programming and Scripting
Hi,
I have written this code
------------------------------------------------
# !/bin/ksh
i=0
while
do
j=$i
while
do
echo -e $j
#printf "%d",$j
j=`expr $j - 1`
done
echo
i=`expr $i + 1`
done
----------------------------------------------------
The ouput which... (2 Replies)
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Hi
I have below sed to search and print particular line that matches in file and prints it, which is actually working fine as expected.
sed -n "/^2012-11-19 23:*/p" filename
but if I replace date with the variable it seems it's not recognizing it and throwing out error
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Hi Everyone,
Is there a way I can print specific lines using sed -n '3,3p' file.dat or awk 'FNR==3' file.dat when using variable?
For example, I have this script (get_line.ksh) that accepts line parameter that a user wanted to print in the file.dat.
file.dat
one
two
three
four
... (1 Reply)
Discussion started by: zzavilz
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9. Shell Programming and Scripting
Hi,
I have an input file like this
line1
line2
line3 hello unix how are you
This is what I am expecting my output to be
line1
line2
#line3 hello unix how are you
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Currently using below script but echo it print the output in two line.
Input file all-vm-final-2.txt
CEALA08893 SDDC_SCUN DS_SIO_Workload_SAPUI_UAT_01 4
CEALA09546 SDDC_SCUN DS-SIO-PD5_Workload_UAT_SP1_Flash_07 4
CEALA09702 SDDC_SCUN DS-VSAN-RMP-WORKLOAD01 4
DEALA08762 SDDC_LDC... (3 Replies)
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LEARN ABOUT REDHAT
sysctl
SYSCTL(8) SYSCTL(8) NAME
sysctl - configure kernel parameters at runtime SYNOPSIS
sysctl [-n] [-e] variable ... sysctl [-n] [-e] -w variable=value ... sysctl [-n] [-e] -p <filename> (default /etc/sysctl.conf) sysctl [-n] [-e] -a sysctl [-n] [-e] -A DESCRIPTION
sysctl is used to modify kernel parameters at runtime. The parameters available are those listed under /proc/sys/. Procfs is required for sysctl(8) support in Linux. You can use sysctl(8) to both read and write sysctl data. PARAMETERS
variable The name of a key to read from. An example is kernel.ostype. The '/' separator is also accepted in place of a '.'. variable=value To set a key, use the form variable=value, where variable is the key and value is the value to set it to. If the value contains quotes or characters which are parsed by the shell, you may need to enclose the value in double quotes. This requires the -w param- eter to use. -n Use this option to disable printing of the key name when printing values. -e Use this option to ignore errors about unknown keys. -w Use this option when you want to change a sysctl setting. -p Load in sysctl settings from the file specified or /etc/sysctl.conf if none given. -a Display all values currently available. -A Display all values currently available in table form. EXAMPLES
/sbin/sysctl -a /sbin/sysctl -n kernel.hostname /sbin/sysctl -w kernel.domainname="example.com" /sbin/sysctl -p /etc/sysctl.conf FILES
/proc/sys /etc/sysctl.conf SEE ALSO
sysctl.conf(5) BUGS
The -A parameter behaves just as -a does. AUTHOR
George Staikos, <staikos@0wned.org> 21 Sep 1999 SYSCTL(8)