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Thank you so much:b::b::b::b::b::b:

Hello,
I'm using ls -laR to print out a list of file and folders. I want to print only the permission, file size and file name. Also, excluding the '.' and '..'.

result from ls -laR:

total 6...

THANK YOU~~~~~~~~~~~~~~~~~~~~~~~~~~
;)

mm..I get an empty output.

mm..I'm not very familiar with awk, but it's not giving what I want.
it outputs something like:

string=\Pattern>
string=
string=

hm.. I tried this one before, it output all values up to the 1st pattern.

so
file:
<before>blah<\before>
<before>blah1<\before>
<before>blah2<\before>
<Pattern>file<\Pattern>
.....

original sed command:
sed -n '/<pattern>/s/.*>\(.*\)<.*/string=\1/gp' file

ok

so
file:
<Pattern>file<\Pattern>
<Pattern>file2<\Pattern>
..
<Pattern>file3<\Pattern>
..
<Pattern>file4<\Pattern>

sed -n '/<pattern>/s/.*>\(.*\)<.*/string=\1/gp' file
returns:
...

Hello experts,
I have this complicated code that output value in between pattern and add "a string" to the front of the output.
The problems I have many pattern that are the same.
so I want to...

beautiful~:b::b::b::b::b::b::b::b:

I want to write a sed command that does the following work:

file: <a>asdfasdf<\s>
<line>hello</line>
<b>adf<\c>
<b>tttttttt<\c>

output:
name=hello

sed -e 's/^[ \t]*//' -n...

thank you thank you

yes, there are more text outside the separators. I'm trying to change the command people provide me to make it more suitable for my case.
and maybe my sed is too old, I get unrecognized command with...

hello experts,

I want to get the value between 2 patterns.
ex. get hello in <line>hello</line>
Any suggestions?
any sed, grek, awk commands?

I got the remove last 10 line part, but starting from 3rd line doesn't work for me.

hehehe
sorry, I meant

a file:
blablabla
blablabla
blablabla
asdfasdf0123456789
asdfasdf0123456789

output:
blablabla
blablabla
blablabla
asdfasdf
asdfasdf

say I have a line:
blablabla
blablabla
asdfasdf0123456789
asdfasdf0123456789

I want the out put to be:
blablabla
blablabla
asdfasdf
asdfasdf

thank you

hello experts,
I need a sed command that remove last 10 characters of a line start from 3rd line.
any suggestions?

Thanks you

one interesting thing is using "cat tfile1 | cut -c10- >$f1out "
tfile1 and f1out must be different.
is there any way to replace the same file?
what about "sed"?

Sorry, can't express enough of my thanks~~~~~~
I was stuck on it for so long.
THANK YOU

YAY:b::b::b::b::b::b:

ok, I got this part. If I want to redirect error message I should use 2>.
now come to my 2nd question. how do I put the program in the background and redirect the error message to a file?
file.sh &...

Hello experts,
I'm testing a program that prints error message to the screen.
I want to redirect the output to a file using >. but the message only prints on screen and not writing to the file,...

The files contain more than 1 line, a more likely example would be:

file1:
lalalala good file
lalblala good file
lalalalb good file
lalalbla good file

file2:
lblblblb good file
lblblclb...

Hello experts,
I have 2 files
file1:
lalalala good file

file2:
lblblblb good file

these two files are the same in my test case, how can I start compare after certain number of characters?...