How do I use sed or awk to remove text?

Question

I have the following line in a file:

      Linux Release............5.4.2.0-02 12_12_2011_07:31:23

How do I remove all characters before the first number with sed or awk?

I wish to get the following result:

      5.4.2.0-02 12_12_2011_07:31:23

score 2 · Accepted Answer · answered Jan 10 '12 at 11:13

2

Try this:

sed -e 's/[^0-9]\+//'

answered Jan 10 '12 at 11:13

Janne Pikkarainen

what I need to change in the syntax in order to run it also on SOLARIS? – Eytan Jan 10 '12 at 12:18
I don't think redirection works that way. Try `echo " InSight Release............4.3.7.1-02.4 February-20,-2011-9:56:19" | sed 's/[^0-9]\+//'`, it works for me. – MadHatter Jan 10 '12 at 13:44
1

@Eytan: You want it to work on Solaris, but you tagged your question "Linux". Do you need it to work on both? – Dennis Williamson Jan 10 '12 at 16:54
@MadHatter: Did you mean for your comment to be attached to Birei's answer? If so, the `<<<` is for a Bash here-string. Other shells may not support it. – Dennis Williamson Jan 10 '12 at 16:56
Denis, yes, I did, and thanks for that - one learns something every day! – MadHatter Jan 10 '12 at 17:02

score 1 · Answer 2 · answered Jan 10 '12 at 11:12

1

One way using sed:

sed 's/^[^0-9]*//' <<<"      Linux Release............5.4.2.0-02 12_12_2011_07:31:23"

Result:

5.4.2.0-02 12_12_2011_07:31:23

answered Jan 10 '12 at 11:12

Birei

2 Answers2