thanx a lot ghostdog that was straight forward really appreciate it!
if i have 2 files to compare the lines how do i do it with the While loop
say file 1 has
my name is john
file2
my name is jon
i want to compare if the lines in each file are the same
have tried
cat 'file.1' | while read line;
do
c=$line
cat 'file.2' | while read line
do
d=$line
if test "$c" != "$d"
then echo $c is different
fi
done
done
Greetings.
I am struggling with a shell script to make my life simpler, with a number of practical ways in which it could be used. I want to take a standard text file, and pull the 'n'th word from each line such as the first word from a text file.
I'm struggling to see how each line can be... (5 Replies)
Hey All,
On commad promt of a shell..
How can we move our cursor word by word.
Like Ctrl+A takes to the starting of the command...
Any shortcut like that..?
Thanks
pbsrinivas (1 Reply)
Assume I have a text file as below:
me
con pi
ind ken
pras ur
me
con rome
ind kent
pras urs
pintu
con mys
ind pan
pras ki
con kit
ind sys
My requirement,
I need to search for "con rome" and if exists, then print 4th word from rome, i.e in above example, since "con rome"... (4 Replies)
I have a File with the below contents
File1
I have no prior experience in unix. I have just started to work in unix.
My experience in unix is 0. My Total It exp is 3 yrs.
I need to replace the first word in each line with the last word for example
unix have no prior experience in... (2 Replies)
Hi people;
i want to read the last word of the 14th line of my file1.txt. Here is the EXACT 14th line of the file.
250 SectorPortnum=3,AuxPortInUngo=2,PortDeviceGroup=1,PortDeviceSet=1,PorDevice=1 20 >>> Set.
i have to get the word Set. how can i call it and also how... (3 Replies)
Hi, I need a script to read last word of the line and out put in some temp file.
i
it can contain any word like:
My name is Harry.
or
My zip code is 24490
or it can be
My secret code is 024H
I just need last word of the line (Harry, or 2440 or 024H)
Thanks for the posts below.... (10 Replies)
Hi,
I would like to read a file line by line and then store the whole line word by word in array so that I can do specific manipulation on each word.
$ cat test.txt
hello how are you
i am good
I would like to have an array created dynamically so that first time , the... (4 Replies)
Hi All,
Hope you guys had a wonderful weekend
I have a scenario where in which I have to read a file line by line
and check for few words before redirecting to a file
I have searched the forum but,either those answers dint work (perhaps because of my wrong under standing of how IFS... (6 Replies)
I have a file: file.txt, which contains the following data in it.
This is a file, my name is Karl, what is this process, karl is karl junior, file is a test file, file's name is file.txt
My name is not Karl, my name is Karl Joey
What is your name?
Do you know your name and... (3 Replies)
Discussion started by: anuragpgtgerman
3 Replies
LEARN ABOUT NETBSD
cat
CAT(1) BSD General Commands Manual CAT(1)NAME
cat -- concatenate and print files
SYNOPSIS
cat [-beflnstuv] [-] [file ...]
DESCRIPTION
The cat utility reads files sequentially, writing them to the standard output. The file operands are processed in command line order. A
single dash represents the standard input, and may appear multiple times in the file list.
The word ``concatenate'' is just a verbose synonym for ``catenate''.
The options are as follows:
-b Implies the -n option but doesn't number blank lines.
-e Implies the -v option, and displays a dollar sign ('$') at the end of each line as well.
-f Only attempt to display regular files.
-l Set an exclusive advisory lock on the standard output file descriptor. This lock is set using fcntl(2) with the F_SETLKW command.
If the output file is already locked, cat will block until the lock is acquired.
-n Number the output lines, starting at 1.
-s Squeeze multiple adjacent empty lines, causing the output to be single spaced.
-t Implies the -v option, and displays tab characters as '^I' as well.
-u The -u option guarantees that the output is unbuffered.
-v Displays non-printing characters so they are visible. Control characters print as '^X' for control-X; the delete character (octal
0177) prints as '^?'. Non-ascii characters (with the high bit set) are printed as 'M-' (for meta) followed by the character for the
low 7 bits.
EXIT STATUS
The cat utility exits 0 on success, and >0 if an error occurs.
EXAMPLES
The command:
cat file1
will print the contents of file1 to the standard output.
The command:
cat file1 file2 > file3
will sequentially print the contents of file1 and file2 to the file file3, truncating file3 if it already exists. See the manual page for
your shell (i.e., sh(1)) for more information on redirection.
The command:
cat file1 - file2 - file3
will print the contents of file1, print data it receives from the standard input until it receives an EOF ('^D') character, print the con-
tents of file2, read and output contents of the standard input again, then finally output the contents of file3. Note that if the standard
input referred to a file, the second dash on the command-line would have no effect, since the entire contents of the file would have already
been read and printed by cat when it encountered the first '-' operand.
SEE ALSO head(1), hexdump(1), lpr(1), more(1), pr(1), tail(1), view(1), vis(1), fcntl(2)
Rob Pike, "UNIX Style, or cat -v Considered Harmful", USENIX Summer Conference Proceedings, 1983.
STANDARDS
The cat utility is expected to conform to the IEEE Std 1003.2-1992 (``POSIX.2'') specification.
The flags [-belnstv] are extensions to the specification.
HISTORY
A cat utility appeared in Version 1 AT&T UNIX. Dennis Ritchie designed and wrote the first man page. It appears to have been cat(1).
BUGS
Because of the shell language mechanism used to perform output redirection, the command ``cat file1 file2 > file1'' will cause the original
data in file1 to be destroyed! This is performed by the shell before cat is run.
BSD September 23, 2006 BSD