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Hi,
I've tried to use classes in my program, but the compiler simply gives an error on the word class . Am I the only one with this problem ? I have no idea how to use classes in c in linux...

Hello. There is something I can not manage : I want to swap the first word with the third one in every line. No file is given the input is read from the keyboard. I know I have to use sed, but it...

hello,
I've got a lil shell program, which gets some directories as parameters.How can I sort this directories with respect to the nr of files they contain? The dir with the most files should be...

hi, I need to know how to lock a file. I used the following code, but after executing the program the file 'write.txt' remined empty, and I have no idea why.Maybe I'm not using the corresponding...

I just saw in a tutorial that sort -f also converts small caps in capital. it was just an idea. but thanks for the nawk.

i think i have to do soemthin with sort -f

10x a lot, but isn't there a simpler way to do it? maybe awk combined with sed or somethin', this looks too hard for me......

hi guys, I know this might be very simple for u but not for me.
I simply want to print the active users, changeing the first letter in their names to capital. i guess sed it's useful but don't know...

hi, I have a problem. I've done a lil program which gets from the server the given persons username a personal folder. I made it with a pipe calling popen with a command, but how can i make the same...

how can I print the first 3 characters of each first word of every a line in a file using awk?

10x a lot for help

could u pls expain to me what means the expr 's/^/newBeginning/' ?

i've tried
sed i \ txtinsert filename

can someone tell me how can I insert a word in front of each line in a file.
i tried with sed but didn't managed yet.
Is there another command or this one(sed) works?
10x anyway.

Thanks for the help, this also works:

grep -ca ^$ filename

10x especially for stobo ´s reply.

I want to display the number of empty lines in a file. I guess i should use 'grep'...but how..
10x for those who'll help.

10x a lot, I've tried comm but didn't know what other command to use

it is a simple problem, but I am totally new to shell programming
There are 2 files. I have to print the 5 five lines which are different.
I appreciate any help.
10x.