i have a file which contains text as shown below....
aaa|bbb|ccc|ddd|
cccc|ddddd|eeeee|ffffff
want to convert pipe symbol to tab like
aaaa bbbb cccc ddddd
ccccc ddddd eeeee ffffffffff
i tried with sed
sed 's/|/\t/g' file_name ...but i could not... (1 Reply)
I have various column names within double quotes, separated by commas.
Example:
"column one", "column number two", "this is column number three", anothercolumn, yetanothercolumn
I need to eliminate the double quotes and replace the blanks within the double quotes by underscores, giving:
... (5 Replies)
Hi All Gurus,
I need to replace a pipe <|> with a comma <,> in a few columns with pipe delimited file. The column name are fixed for the replacement of comma <,>.
For below example, Col3, Col6 and Col8 are columns need to replace with comma <,> if any pipe encountered.
example:... (14 Replies)
I want to replace the whitespace with Pipe symbol to do a multiple pattern matching for the whole text "mysqld failed start" and same as for other text messages Below are the messages stored in a file seperate by whitespace
mysqld failed start
nfsd mount failed
rpcbind failed to start
for... (6 Replies)
Well as the title describes, its a pretty straight forward problem. I have a series of psql tables where there are lots of blanks. However there is at least one column, called name, that will never be blank. I want to write a select statement to get all of the contents of the table and then turn... (3 Replies)
I have file like below
abc 12 34 45 code
abcdef 451 1 4 code
ghtyggg 4 56 3 code
I need to change this to
abc|12|34|45|code|
abcdef|451|1|4|code|
ghtyggg|4|56|3|code|
I tried replace space with | in sed ... but in the middle some row has... (7 Replies)
Hi All,
I am trying to replace the values inside <password> tag in an xml file but it doesn't replace certain passwords:
For eg:
Server/home/sperinc>cat TextXML.txt
<appIds>
<entry name="AccountXref">
<type id="ldap">
<realm>nam</realm>
... (7 Replies)
Hi Folks!
Need a solution for the following :-
Source data
-------------
123|123|<CRLF><CRLF><CRLF>|321<CRLF>
Required output
------------------
123|123|<LF><LF><LF>|321<CRLF>
<CRLF> represents carriage return
<LF> represents line feed
Being hunting high and low for a... (10 Replies)
with in my files i have the data like this, starting with a pipe and ending the line with a pipe.
all i want is to replace the first and last pipe , remove those
trying to use following sed command, but it is only showing on the screen the entire data of the file as if it removed, but when i... (4 Replies)
Discussion started by: cplusplus1
4 Replies
LEARN ABOUT BSD
pipe
PIPE(2) System Calls Manual PIPE(2)NAME
pipe - create an interprocess communication channel
SYNOPSIS
pipe(fildes)
int fildes[2];
DESCRIPTION
The pipe system call creates an I/O mechanism called a pipe. The file descriptors returned can be used in read and write operations. When
the pipe is written using the descriptor fildes[1] up to 4096 bytes of data are buffered before the writing process is suspended. A read
using the descriptor fildes[0] will pick up the data.
It is assumed that after the pipe has been set up, two (or more) cooperating processes (created by subsequent fork calls) will pass data
through the pipe with read and write calls.
The shell has a syntax to set up a linear array of processes connected by pipes.
Read calls on an empty pipe (no buffered data) with only one end (all write file descriptors closed) returns an end-of-file.
Pipes are really a special case of the socketpair(2) call and, in fact, are implemented as such in the system.
A signal is generated if a write on a pipe with only one end is attempted.
RETURN VALUE
The function value zero is returned if the pipe was created; -1 if an error occurred.
ERRORS
The pipe call will fail if:
[EMFILE] Too many descriptors are active.
[ENFILE] The system file table is full.
[EFAULT] The fildes buffer is in an invalid area of the process's address space.
SEE ALSO sh(1), read(2), write(2), fork(2), socketpair(2)BUGS
Should more than 4096 bytes be necessary in any pipe among a loop of processes, deadlock will occur.
4th Berkeley Distribution August 26, 1985 PIPE(2)