SED Substitution

Shell Programming and Scripting
1

Hi guys,

Can u please help me to replace (-) with (/) in a file containing no of records using "sed " command in unix.

thanks in advance.

subhendu

2

I"m not as good as some of the guys here but try this

sed 's/-/\//' filename > newfile
3

Try also with tr ,perl and awk:

[/tshome/tf01 ]>x="ashdkhsa-sdasldhals-sadakjsh-"
[/tshome/tf01 ]>echo $x | tr "-" "/"
ashdkhsa/sdasldhals/sadakjsh/

or,

perl -ne 's/-/\//;print;' filename

or,

[/tshome/tf01 ]>echo $x | awk '{gsub(/-/,"/",$0); print; }'
ashdkhsa/sdasldhals/sadakjsh/
4

hi guys,

how can i convert multiple spaces to single space using sed in unix.

thanks in advance.

subhendu

5

how many spaces are you talking about?
you can use any one of the methods above.

I would try this:

sed 's/          / /' filename

in addition, read through sed manual

man sed

they have lots of information and examples.

6

Is this a homework or sth?

try this,
tr -s " " < filename > outfile