sed Command Troubles

[Nevets1106]

I have a file that contains a snapshot of all the current files and directories. I am trying to remove several directories from this snapshot. What I have is:

sed '/\/tmp/ d' snapshot


The issue is that the sed command uses the same delimeter as the directory /. I've tried setting the directory to a variable and using double quotes as below with no luck:

dir= "/tmp"
sed "/$dir/ d' snapshot

Any help or suggestions would be very appreciated. Thanks ahead of time

 

[dstxaix]

I think you can use ; (semi colon) as a delimiter too. Please try and let me know if it works

 

[Nevets1106]

As suggested I tried both statements below. Neither has worked.

sed ';/tmp;d' snapshot
sed ':/tmp:d' snapshot

 

[hoinz]

what about this:
sed '\:/tmp:d' snapshot

btw: man sed

 

[feherke]

Hi

Honestly I do not understand what you want. Your first code is correct and works.

sed '/\/tmp/ d' snapshot

There is no other way in [tt]sed[/tt]. For example in [tt]perl[/tt] there are the [tt]m[/tt] and [tt]s[/tt] functions which can eliminate the ambiguity :

perl -pe '$_="" if m:/tmp:' snapshot

But while in [tt]sed[/tt] there is only [tt]s[/tt] and no m, you can use custom delimiters only in substituting and not in matching.

Feherke.

http://rootshell.be/~feherke/

 

[Nevets1106]

When I use the command below, I'm recieving "Can't open shanpshot" even though snapshot has -rwxrwxrwx- permissions.

sed '/\/tmp/ d' snapshot


I guess the sed command is being processed correctly, but what else could be causing "Can't open shanpshot" error?

 

[Nevets1106]

By the way, I am working in a Sun Solaris Unix environment.

 

[feherke]

Hi

Aha. That is new information.

I am not familiar with Unix implementations of [tt]sed[/tt], but try this :

sed [red]-e[/red] '/\/tmp/ d' snapshot

Feherke.

http://rootshell.be/~feherke/

 

[Annihilannic]

It just sounds like there is no file called 'snapshot' in the current directory. Have you checked?

Annihilannic.

 

[Nevets1106]

I ls the working directory and snapshot exists.

 

[p5wizard]

perhaps your snapshot file has a (at least for ls output invisible) whitespace character in it at the end?

output of

ls *snap*|od -xc

please?


HTH,

p5wizard

 

[mrn]

Try using the full path to snapshot

sed '/\/tmp/ d' /home/user/username/snapshot



Mike

"Whenever I dwell for any length of time on my own shortcomings, they gradually begin to seem mild, harmless, rather engaging little things, not at all like the staring defects in other people's characters."

 

[Nevets1106]

I couldn't get this sed issue worked out however, I found a way to work around it. I learned of the grep -v option which acts as a reverse grep. I used this to remove unwanted directories as I was doing my snapshot comparison. So now I have code listed below. Thanks for everyones help.

#Create snapshot
du -h >> /usr/todaysnapshot.txt
diff -c todaysnapshot.txt previoussnapshot.txt | grep -v "/temp*" >> snapshotreport.txt