hi,
I have a 20 line file.
I need a command which will brinf back a specific line based upon the line number I enter.
e.g. the file looks like this and is called file1
jim is a man
john is a woman
james is a man
wendy is a woman
lesley is a woman
i want a command that will... (4 Replies)
hello all,
I have a file like this:
section 1
blah1
blah2
section 2
blah1
blah2
section 3
blah1
blah2
and I want to use sed to duplicate section 2, like this:
section 1
blah1
blah2
section 2
blah1
blah2
section 2
blah1 (2 Replies)
Hi,
I have a text file 10giga size.
Opening the file with vi takes forever ...
Im intersting only with the 100 first records.
Is there way to copy those 100 lines to new file (with no need to open the file)?
Thanks (6 Replies)
I have a list of Servers in no particular order as follows:
virtualMachines="IIBSBS IIBVICDMS01 IIBVICMA01"And I am generating some output from a pre-existing script that gives me the following (this is a sample output selection).
9/17/2010 8:00:05 PM: Normal backup using VDRBACKUPS... (2 Replies)
Hi,
My requirement is that I've to read a config file having below info
Oracle
number|double;integer -> user can put multiple values here
blob|binary
varchar2|string
varchar|string
number(p,s)|decimal
timestamp|date/time
and so on ....
Sybase
bigint|bigint
datetime|date/time... (2 Replies)
i have a file as below that has n section :
2006 0101 1236 49.3 L 37.902 48.482 0.0 Teh 5 0.2 2.7LTeh 1
GAP=238 E
Iranian Seismological Center, Institute of Geophysics, University of Tehran 6
... (5 Replies)
Hello,
I have to a add 2 lines to /etc/sudoers file under this section below, can someone please suggest script to add these two lines when execute this remotely on to a multiple servers.
before
## Allow root to run any commands anywhere
root ALL=(ALL) ALL
After
## Allow root... (2 Replies)
In the below, I am trying to lookup $1 and $2 from file1, in a range search using $1 $2 $3 of file2. If the search key from file1 is found in file2, then the word low is printed in the last field of that line in the updated file1. Only the last section of file1 needs to be searched, but I am not... (6 Replies)
Hello,
I need to know all IP range (ip_prefix), associated with us-west-2 region only from this link - https://ip-ranges.amazonaws.com/ip-ranges.json (it can be opened in wordpad for better visibility)
Please suggest, how would I do it. If vi, awk or sed is needed, I have downloaded it on my... (7 Replies)
Hi Gurus,
I have below file which has different sections, need to move the sections to beginning of the each record.
original file
aaa
bbb
ccc
ddd
eee
fff
output file.
aaa
bbb
ccc
ddd
eee
fff (6 Replies)
Discussion started by: green_k
6 Replies
LEARN ABOUT OSX
cat
CAT(1) BSD General Commands Manual CAT(1)NAME
cat -- concatenate and print files
SYNOPSIS
cat [-benstuv] [file ...]
DESCRIPTION
The cat utility reads files sequentially, writing them to the standard output. The file operands are processed in command-line order. If
file is a single dash ('-') or absent, cat reads from the standard input. If file is a UNIX domain socket, cat connects to it and then reads
it until EOF. This complements the UNIX domain binding capability available in inetd(8).
The options are as follows:
-b Number the non-blank output lines, starting at 1.
-e Display non-printing characters (see the -v option), and display a dollar sign ('$') at the end of each line.
-n Number the output lines, starting at 1.
-s Squeeze multiple adjacent empty lines, causing the output to be single spaced.
-t Display non-printing characters (see the -v option), and display tab characters as '^I'.
-u Disable output buffering.
-v Display 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), more(1), pr(1), sh(1), tail(1), vis(1), zcat(1), setbuf(3)
Rob Pike, "UNIX Style, or cat -v Considered Harmful", USENIX Summer Conference Proceedings, 1983.
STANDARDS
The cat utility is compliant with the IEEE Std 1003.2-1992 (``POSIX.2'') specification.
The flags [-benstv] 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!
The cat utility does not recognize multibyte characters when the -t or -v option is in effect.
BSD March 21, 2004 BSD