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Skip to next line if the variable is string

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# 1  
Old 05-25-2016
Skip to next line if the variable is string
Hi

I have the follwoing requirement
I have a file as follows:
Code:
# cat priy
yyy.poweroff_cmd = /sbin/poweroff
hhh.powersave-nap = 1

When this file is provided as input, I first used "awk" command and saved variables present after "="
Code:
replace=$line
replace1=`echo $line | awk -F "=" '{print $1}'`

Now i see the output of replace1 at first iteration as "/sbin/poweroff"
My problem is if i see the output of replace1 as a string I should skip this line and proceed to second iteration where I can fetch the second line
Please help..Smilie
# 2  
Old 05-25-2016
No need to bother awk unless you are using a very old shell. With e.g. a recent bash, you could try
Code:
replace="yyy.poweroff_cmd = 1"
[[ "${replace##* }" =~ [^0-9] ]] && echo string || echo number
number
replace="yyy.poweroff_cmd = /sbin/poweroff"
[[ "${replace##* }" =~ [^0-9] ]] && echo string || echo number
string

If you do the extra mile and make the config file's entries likehhh.powersave-nap=1, you could source them and immediately have the variables defined for later processing.
This User Gave Thanks to RudiC For This Post:
Priya Amaresh
# 3  
Old 05-25-2016
One way is to assume the number is not zero - using awk (use this code for the two lines of shell you show)

Code:
replace1=$(awk ' int ($(NF) ) == 0 {continue }  # int returns zero when $NF is a string 
                         {print $(NF) }' priy )

This logic may not work for what you are doing.
This User Gave Thanks to jim mcnamara For This Post:
Priya Amaresh
# 4  
Old 05-26-2016
It worked .. Thanks Smilie
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