I have tried to show the file name whose size is greater than 200 byte in current directory.
Please help me.
ls -l | tr -s " " " " | cut -f 5,9 -d " " >out.txt
#set -a x `cat out.txt`
i=0
`cat out.txt` | while
do
read x
echo $x
#re=200
j=0
if }" < "200" ]
then
echo $j
j=`expr $j... (2 Replies)
Hi,
I'm trying to figure out the best solution to the following problem, and I'm not
yet that much experienced like you. :-)
Basically I have to read a fairly large file, composed of "messages" , in order
to display all of them through an user interface (made with QT).
The messages that... (3 Replies)
I am new to Unix so will really appreciate if someone can guide me on this.
What I want to do is:
Step1: Read binary file - pick first 2 bytes, convert from hex to decimal. Read the next 3 bytes as well.
2 bytes will specify the number of bytes 'n' that I want to read and write... (1 Reply)
Hi All,
I am having an XML tag like:
<detail sim_ser_no_1="898407109001000090"
imsi_1="452070001000090">
<security>ADM1=????</security>
<security>PIN1=????</security>
<security>PIN2=????</security>
... (2 Replies)
I am working on a script to unfold data for each column from a specific line of data and write output in a single line.
Input data looks like this.
2011-09-26 INF UM_10 UserMana Starting synchronization for security domain
14:37:31 080 gementSe .
rvice
I... (2 Replies)
I have list of files in a directory 'dir'. Each file is of type HTML. I need to read each file and get the string which starts with 'http' and write them in a new text file. How can i do this shell scripting?
file1.html
<head>
<url>http://www.google.com</url>
</head>
file2.html
<head>... (6 Replies)
Hi,
can some one help me how to encrypt and decrypt a file.
AIM: reade user input, encrypt it and save it to file.
while decryption read the encrypted file decrypt it and save the output in some variable.
Example: consider we have Credentials.txt file with content username: password... (5 Replies)
Hi....
I have a data file, which I want to split and write to new file...it looks like this...
Column1 column2 Column 3
1 28.25 36.42 -----Read
5 28.26 36.42
10 28.23 36.43
15 28.22 36.43... (1 Reply)
Hi friend i have input as following XML file
<?xml version="1.0"?>
<Document xmlns="urn:iso:std:iso:20022:tech:xsd:camt.054.001.02">
<BkToCstmrDbtCdtNtfctn>
<GrpHdr><MsgId>LBP-RDJ-TE000000-130042430010001001</MsgId><CreDtTm>2013-01-04T03:21:30</CreDtTm></GrpHdr>... (3 Replies)
Hi,
I need to compare 2 text files with around 60000 rows and 1 column. I need to compare these and write the mismatch data to 3rd file.
File1 - file2 = file3
wc -l file1.txt
58112
wc -l file2.txt
55260
head -5 file1.txt
101214200123
101214700300
101250030067
101214100500... (10 Replies)
Discussion started by: Divya Nochiyil
10 Replies
LEARN ABOUT PLAN9
pipe
PIPE(2) System Calls Manual PIPE(2)NAME
pipe - create an interprocess channel
SYNOPSIS
#include <u.h>
#include <libc.h>
int pipe(int fd[2])
DESCRIPTION
Pipe creates a buffered channel for interprocess I/O communication. Two file descriptors are returned in fd. Data written to fd[1] is
available for reading from fd[0] and data written to fd[0] is available for reading from fd[1].
After the pipe has been established, cooperating processes created by subsequent fork(2) calls may pass data through the pipe with read and
write calls. The bytes placed on a pipe by one write are contiguous even if many processes are writing. Write boundaries are preserved:
each read terminates when the read buffer is full or after reading the last byte of a write, whichever comes first.
The number of bytes available to a read(2) is reported in the Length field returned by fstat or dirfstat on a pipe (see stat(2)).
When all the data has been read from a pipe and the writer has closed the pipe or exited,read(2) will return 0 bytes. Writes to a pipe with no reader will generate a note sys: write on closed pipe.
SOURCE
/sys/src/libc/9syscall
SEE ALSO intro(2), read(2), pipe(3)DIAGNOSTICS
Sets errstr.
BUGS
If a read or a write of a pipe is interrupted, some unknown number of bytes may have been transferred.
When a read from a pipe returns 0 bytes, it usually means end of file but is indistinguishable from reading the result of an explicit write
of zero bytes.
PIPE(2)