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If I want to create an alias called "cdr", and this alias need an argument (for example arg1)followed by "cdr", the result should go to the directory like "/home/ting/arg1/report/logs", the command...

Dear all,

I have a question regarding the remote access a server without login using "ssh". I'm thinking if there is anyway to send a certificate pass to ssh command.

For example, I need...

Yeah, I forget the command "paste". Thanks. Before this, I used perl to instead of.

Dear all,

I have a question about merging multiple files to one.

For example, I have 4 files, named file_1, file_2, file_3 and file_4, they all have same line number, and only one word in each...

Is this command I can use?

mail -s ...

Hope this is the one

Anyone can help me, in Unix, how can I attach a file in the email?

Thank

Dear all,

Normally unix automatically record up to 500 the command lines whatever I put in. Does anyone knows how I can avoid this record, in another word, I dont want system remember what I...

I'm a vi/vim fan ;)

In this particular case, the line in the file is too long to over the "grep" command's limitation, so neither "grep" or "egrep" or "fgrep" won't work. That's why I need find out how to do it either...

the purppose I want is find the file which contains a pattern in the file, not in the file name

In a file directory, how can I only get the file-name which contains a pattern inside the file using awk?

for example, there are 3 text files in a directory,

file_1, file_2, file_3

I'd like...

folks,

In my working directory, there a multiple large files which only contain one line in the file. The line is too long to use "grep", so any help?

For example, if I want to find if these...

that's right, I missed """, thanks.

folks,

I wrote a script like follow for sending notification email, but the problem is cannot pass the multiple words to the subject line, any help:

=======================================...

Thank you! :)

Folks,

How can I do a globe search & replace in VI editor? Any help?

Thanks.

Because I got a wrong anwser when I put that into my shell script, but somehow, now I find an answer based on your "sed", but I will try the "awk" later, it's easier to understand, also for the later...

How about in more complicate case, like if the string is:

$HOME/client/log/aaa_bbb_ccc

and I only want get substring "bbb", what should I do?

Thank in advance

Best :)

Yeah, actually me too, and that one is easier for me the understand :)

But yours works well too, Thanks

How about in more complicate case, like if the string is:

$HOME/client/log/aaa_bbb_ccc

and I only want get substring "bbb", what should I do?

Thank in advance

Best

Your comment is really big help, tmarikle! Thank you sooooooooo much!!!

Best :)

thank you for you quick reply, tmarikle!!!!

I've tried it, and works perfectly! but those chars really confused me. don't have clue how it works.

I need time to dig into it.

Best ;)

I'm new for sed/awk. please help:

If I have a passing parameter like "aa_bbb_ccc", how can I only catch the string "bbb", because I only need this part to asign to another variable.

Thanks

I found out the answer, using 'xargs',

the command should be:

ls | tail -1 | xargs tail -1


Thanks, everybody

Question, please help.

I'd like to write a shell script, if use command line, should be two commands:

1, ls | tail -1
2, tail the last line of the file which is output of the line one

Could...