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Run perl -pe 's/\r/\n/g' sample.txt > sample2.txtThenwc -l sample2.txt

Actually, it means, there's no new lines as they understand it.

Would this work?
awk 'BEGIN{ RS="\r" } END{print NR}' sample.txt

$ find . \( -name "*.ksh" -o -name "*.p" \) -mtime -7

The find command uses arguments like:
-mtime -2
-mtime +2
-mtime 2

There are -ctime and -atime options as well. Since we now understand the differences among mtime, ctime, and atime, by...

Unix keeps 3 timestamps for each file: mtime, ctime, and atime. Most people seem to understand atime (access time), it is when the file was last read. There does seem to be some confusion between...

instead of $1 use $0

awk '{printf("-param %s ", $0)}' <filename>

I was going the userdel man page and found this...


Funny? Deliberate? Mistake?
Have you come across something like this?

I found it funny! The author should have some grudge towards the...

awk '{a=$3".dat";printf("%s\n",$0) >> a}' abc.dat

when ever you are setting the alias, you need to provide the absolute path


alias show='sh /absolute/path/of/1.sh'

Set the path in environment variable and try to execute.


export env_variable=PATH

echo "abc" > myfile$(date +%Y%m%d_%H%M%S)

Using you cursor, position yourself where you want to erase, dd has a subtle variant:
d0 erases from beginning to cursor
d$ erases from cursor to end of line...

For first question ..

$ for user in $(cut -d: -f1 < /etc/passwd); do df > /home/$user/diskspace.txt ; done


But you must be a root or a superior user to all these users to create file in...

I don't know what 'ready' would be, but ps tells you the status of a process:

$ ps 1
PID TTY STAT TIME COMMAND
1 ? Ss 0:11 init [3]
$ man ps
...

PROCESS STATE CODES...

echo "abc"|sed "s/.*/[&]/"
For the second output:echo "abc"|sed "s/./[&]/g"

The difference is in the regex meaning :

#* means 0 or more # character
#.* means # followed by 0 or more of any charater

sed 's/#.*//' file1.txt >file2.txt

No, your solution replace the first pattern matching the character # repeated 0 or more times with and empty space.

Consider the following example (for education purpose about understanding...