where is the problem in my sed command....

P_W · #1 (**permalink**) 04-20-2007

for example i have the file that contain several line..and i want to swap the first word and the second word than i store it into new file..

on the command i wrote:

Code:

sed -e "s/^\([^]*\)\([^]*\)/\2\1/g" file > swapfile

i think its already correct...
but i got the error

Code:

sed: -e expression #1, char 26:invalid reference \2 on 's' command's RHS

actually whats wrong with this? i am very exhausted...

P_W · #2 (**permalink**) 04-20-2007

actually i already solve it using awk ..

but i am still curious for the sed command...i think we can do it also using sed comand right?

reborg · #3 (**permalink**) 04-20-2007

Code:

sed 's/^\([^ ][^ ]*\) \([^ ][^ ]*\)/\2 \1/' file > swapfile

P_W · #4 (**permalink**) 04-20-2007

^^
Thanks for the reply..

unfortunately that code doesnt work also..the code only swap the last letter in the word to the front of the word...

let me find it out....

reborg · #5 (**permalink**) 04-20-2007

Are you sure?

Code:

reborg@www:~$ cat file
one two three four five
one two three four five
one two three four five
one two three four five
one two three four five
one two three four five
reborg@www:~$ sed 's/^\([^ ][^ ]*\) \([^ ][^ ]*\)/\2 \1/' file
two one three four five
two one three four five
two one three four five
two one three four five
two one three four five
two one three four five
reborg@www:~$

P_W · #6 (**permalink**) 04-20-2007

oh mate...

sorry...it is working...i just miss the [space] there....

thanks...

More UNIX and Linux Forum Topics You Might Find Helpful
Thread	Thread Starter	Forum	Replies	Last Post
problem in awk command	viveksnv	Shell Programming and Scripting	3	03-03-2008 04:59 AM
problem with tr command	ravi raj kumar	UNIX for Advanced & Expert Users	2	07-02-2007 06:41 AM
problem with dd command or maybe AFS problem	Anta	Shell Programming and Scripting	0	08-25-2006 10:10 AM
ls command problem	buckhtr77	SUN Solaris	2	12-06-2005 04:16 PM
Problem while using Sed command	gopskrish	UNIX for Dummies Questions & Answers	2	06-27-2005 11:26 AM

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes	Rate This Thread
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode	Rate This Thread: