I want to delete lines like this
sed '/FROM_HERE/,/TO_HERE/d'
but I would like to *not* delete the second match, i.e. the TO_HERE line. How can I achieve this?
Thank you! (1 Reply)
Hi All,
I have written the below script that searches for the pattern in a file and delete them if present. please can some one have a look and suggest the changes in the script.
#!bin/sh
# The pattern that user want to add to the files
echo "Enter the pattern of the redirect"
read... (4 Replies)
Hi All,
I have a file in which i have to search for a pattern from the beginning of the file and if the pattern is found , then i have to perform a reverse search from that line to the beginning of the file to get the first occurrence of another pattern.
sample input file
hey
what are you... (8 Replies)
hi,
Here is excerpt from my xml file
<!-- The custom module to do the authentication for LDAP
-->
</login-module>
<login-module code="com.nlayers.seneca.security.LdapLogin" flag="sufficient">
<module-option... (1 Reply)
Hi,
I am new to shell scripting and is working on a script to extract lines from a log file between two time stamps using awk command. After some research I used following command:
awk '/01 Oct 2011/{p=1} /10 Oct 2011/{p=0} p' test.log >> tmp.log
This works fine. But now i want to... (3 Replies)
I want to delete 1 line above the paatern and 3 lines below the pattern and the pattern line itself, on the whole 5 lines. If there are three patterns to be deleted what to do and the final text file to be captured in a new file. (1 Reply)
I want to delete 1 line above the paatern and 3 line below the pattern and the pattern line itself, on the whole 5 lines. If there are three patterns what to do and the final text file to be captured in a new file. (3 Replies)
Hi,
I have a file with the content:
for name in \
sree\
rama\
laila\
srihari\
vicky\
john
do
echo $name
done
I need to remove all the name lines that exist between for (first line) and do line so that i can replace with new names.
Output file should look like: (3 Replies)
Hi Guys,
Need your urgent support please. I have a file with 3 separate strings separated by a comma and 2nd file which has a sentence where I can find these 3 strings. I need to find sentences which do not have these strings and maybe redirect it to a 3rd file.
All the 3 strings will occur... (3 Replies)
Hello.
For a given folder, I want to select any files find $PATH1 -f \( -name "*" but omit any files like pattern name ! -iname "*.jpg" ! -iname "*.xsession*" ..... \) and also omit any subfolder like pattern name -type d \( -name "/etc/gconf/gconf.*" -o -name "*cache*" -o -name "*Cache*" -o... (2 Replies)
Discussion started by: jcdole
2 Replies
LEARN ABOUT FREEBSD
cat
CAT(1) BSD General Commands Manual CAT(1)NAME
cat -- concatenate and print files
SYNOPSIS
cat [-belnstuv] [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.
-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 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 (e.g., 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), fcntl(2), 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 [-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!
The cat utility does not recognize multibyte characters when the -t or -v option is in effect.
BSD January 29, 2013 BSD