tr cmd - how to use sed / awk instead to insert cntl chars

[pauljt]

Hi,

For a 'script' I have put together I needed to get the
PATH variable - and convert the contents of it from:

/usr/dt/bin:/usr/openwin/bin.... etc

to a file...

/usr/dt/bin
/usr/openwin/bin

I have achieved this using:

echo $PATH | tr ":" "\012"

This is absolutely fine, but how could you do this
with sed or awk instead?

I was struggling to work out how to handle control characters in those two beasts...

Thanks!

 

[aigles]

home/jp> echo $PATH | sed -e "s/:/\> /g"

Jean Pierre.

 

[aigles]

Look at this seq FAQ :
http://www.student.northpark.edu/pemente/sed/sedfaq.txt


Jean Pierre.

 

[Ygor]

You should be able to enter control characters in the same way as you would in vi...
[tt]
echo $PATH|sed 's/:/\^J/g'
[/tt]
where ^J is ctrl V ctrl J

Using awk...
[tt]
echo $PATH|awk '{gsub(":","\012");print}'
[/tt]

 

[aigles]

Ygor, sed doesn't accept this syntax :
[tt]
home/jp> echo $PATH | sed -e s/:/^J/g'
sed: Function s/:/ cannot be parsed.
[/tt]


Jean Pierre.

 

[aigles]

Sorry, missing
With a single \, ':' is replaced par nothing ''
You must specify \\^J



Jean Pierre.

 

[sbix]

echo $PATH|awk -F":" '{ for (i = 1;i <= NF;i++) print $i }'

 

[aigles]

yet another method .... ;-)

echo $PATH | tr ':' '\n'


Jean Pierre.

 

[Ygor]

Jean Pierre,
You only need to escape the backslash if you are using double quotes...
[tt]
echo $PATH|sed "s/:/\\^J/g"
[/tt]
...is equivalent to...
[tt]
echo $PATH|sed 's/:/\^J/g'
[/tt]