I have a requirement where i have to read from a .sh file a text lying bet characters like 'SELECT' & ';'...Please help me out in this. I am new to shell scripting. (2 Replies)
Hi All,
i am trying to remove all special charecters().,/\~!@#%^$*&^_- and others from a tab delimited file.
I am using the following code.
while read LINE
do
echo $LINE | tr -d '=;:`"<>,./?!@#$%^&(){}'|tr -d "-"|tr -d "'" | tr -d "_"
done < trial.txt > output.txt
Problem
... (10 Replies)
I have a text file that looks like this:
I want to delete the last character of first column in all rows so that my output looks like this:
Thanks a lot! (1 Reply)
When I use vi to see what's in the file I get this:
int add1(int x) {^M return x + 1;^M}
^Mint subtract1(int x) {^M return x - 1;^M}
^Mint double_it(int x) {^M return x * 2;^M}
^Mint halve_it(int x) {^Mreturn x / 2;^M}
^Mint main() {^M int myint;^M int result;^M ... (2 Replies)
I have a tab delimited file of the following format
2 L a
2 G b
2 L c
2 G a
3 G a
3 G b
3 L c
4 L a
4 G a
4 G b
4 L c
4 G a
..
...
I want to count the number of G's and L's with in the first column and the third column/categories such that I would get an output file: (6 Replies)
Guys,
I know that the below command will cut the 13th field from test.txt file
awk -F"|" '{print $13}' test.txt
The answer would be,
CA
CN
Ohio
If we see the 3 rd one, it has more than 2 characters. So i wanted to check this in if condition and i want to get the output if the 13th... (4 Replies)
Version Info:
$ cat /etc/redhat-release
Red Hat Enterprise Linux Server release 5.8 (Tikanga)
$
$ uname -a
Linux stryker138 2.6.18-308.13.1.el5 #1 SMP Thu Jul 26 05:45:09 EDT 2012 x86_64 x86_64 x86_64 GNU/Linux
I redirected manpage of ksh command's output to a text file as shown... (6 Replies)
I am using flatfile, in that flat file we are getting the junk chars
1)I21001f<82>^Me<85>!h49 Service Charge
2) I21001f‚
e...!h49 Service Charge
please tell me how to remove all junk chars in unix scripts. (1 Reply)
Hi,
I need to create a test text file with the special characters \342\200\223 in it and to be able to use sed maybe to delete them
I tried doing it using vi by pressing CTRL-V and then typing 342 but it does not work. After pressing CTRL-V and typing 342 it seems to just insert the numbers... (1 Reply)
How can I refer to a file named esc[G ? I need to delete it or move it.
TIA (5 Replies)
Discussion started by: wbport
5 Replies
LEARN ABOUT MOJAVE
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