10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello
I am facing a very unique problem and not able to understand why. I have written a function which will check header of the file. If header is present good else it will write the header on top
def writeHeaderOutputCSV(fileName):
# See if the file exist already
try:
... (0 Replies)
Discussion started by: radioactive9
0 Replies
2. UNIX for Dummies Questions & Answers
Hi,
I have a file whihc looks like
file_1 100 200
file_2 200 300
file_4 400 500
as the file_3 is missing so I want to replace it by
file_3 0 0
the final output would look like
file_1 100 200
file_2 200 300
file_3 0 0
file_4 400 500
Any help is highly appreciated.
Regards, (3 Replies)
Discussion started by: begin_2013
3 Replies
3. UNIX for Dummies Questions & Answers
Hi,
I have 1000 files names data1.txt through data1000.txt inside a folder. I want to write a script that will take each first line from the files and write them as output into a new file. How do I go about doing that? Thanks! (2 Replies)
Discussion started by: evelibertine
2 Replies
4. Shell Programming and Scripting
Given a particular line number and a corresponding column number, can i write something in the file during run time?
For example x=1 and during runtime i want to write the value of x in column 100 of every line of a given file, then how shud that be done?
Thanks (9 Replies)
Discussion started by: arindamlive
9 Replies
5. Shell Programming and Scripting
Dear All,
I have a question that's been difficult to get an answer to.
I often write command line loops, e.g. find files, print name, grep for term, apply sed, etc
I use both zsh and bash.
When I write a loop e.g.
for line in `more myfile.txt`
> do
> echo $line
> done
but... (2 Replies)
Discussion started by: JohnK1
2 Replies
6. Shell Programming and Scripting
I want to put a text string in file using any method on specific line
line number 30
text to be put %this is location /var/www/filename (3 Replies)
Discussion started by: aliahsan81
3 Replies
7. Shell Programming and Scripting
Hi,
I have to write s script to check an input file for invalid characters. In this script I have to find the exact line of the invalid character. If the input file contain 2 invalid character sat line 10 and 17, the script will show the value 10 and 17. Any help is appreciated. (3 Replies)
Discussion started by: beginner82
3 Replies
8. Shell Programming and Scripting
I need to write value of variable $version at a particular line in a text file.
Line number is determined by another variable &line......I don't know how to do it in shell script ... (2 Replies)
Discussion started by: punitpa
2 Replies
9. Shell Programming and Scripting
hi
i have a file contains data
Line timeout:
START->SIGNON_REPLY,
SIGNON_REPLY->SIGNON,
Received SOT req
SOT request:
SIGNON->SOT_REPLY,
SOT_REPLY->DATA_RECEIVE,
DATA_RECEIVE->EOD,
i need to write into one line , separated by commas
please help
thanks
Satya (2 Replies)
Discussion started by: Satyak
2 Replies
10. Shell Programming and Scripting
Hi,
Is it possible to accept a filename as command line parameter and then write to that file using command redirection? i tried the below script.
outputfile=`echo $1`
echo "Writing to file" > 'echo $outputfile'
exit $returncode
but it isnt working. is there any other way to... (9 Replies)
Discussion started by: silas.john
9 Replies
line(1) General Commands Manual line(1)
NAME
line - read one line from user input
SYNOPSIS
timeout]
DESCRIPTION
copies one line (up to a new-line) from the standard input and writes it on the standard output. It returns an exit code of 1 on EOF and
always prints at least a new-line. It is often used within shell files to read from the user's terminal.
Options
recognizes the following command-line option:
Timeout after
timeout seconds where timeout is an integer value (if a non-integer value is specified, it is converted to an integer;
i.e., rounded down). A blank is required between and the timeout argument. This option is not documented in POSIX and
other industry standards, and should not be used in portable applications.
EXTERNAL INFLUENCES
International Code Set Support
Single- and multi-byte character code sets are supported.
EXAMPLES
The following lines in a shell script prompt for a file name and display information about the file:
To limit the response time to 10 seconds, use the form:
then test for no response. If no response occurs before timeout expires, a default behavior should be provided.
WARNINGS
This command is likely to be withdrawn from X/Open standards. Applications using this command might not be portable to other vendors' sys-
tems. As an alternative is recommended.
SEE ALSO
sh(1), read(2).
STANDARDS CONFORMANCE
line(1)