Hi all,
I have a problem in handling files through C.
here is the problem im having:
i will query the database (for instance consider employees table )
for empno,ename,job,salary fields.The query returns me some 100 of rows. now i need to place them in a file in row wise pattern as they... (3 Replies)
Hi all,
I got a little issue here. Imagine that I have more than one process accessing one file. Is it possible to know which process(es) are accessing that file when I open the file??
Thanks for the help.
Best regards,
Ernesto (2 Replies)
Hi,
I have a log file which runs into 3 to 5 GB.
We store this typically for 6 months. When a new month starts we move the previous month into a 9 month back up log (file.9m) and delete the last month of the 9 month back up.
Iam using awk to find the data and cat to join the files like... (3 Replies)
sir i have to get first line from a file
for example
>cat file1
abc
zxc
asd
adsf
from that file1 i need only first line
expected result
>abc
please help me ! (1 Reply)
my input for a script is another csv file
but in that file say 7 lines are there ...
how can i get line by line to that input
for example :
>cat link.csv
www.yahoo.com,yahoo
www.google.com,google
www.unix.com,unix
another file
in that file i need to ping the above links
... (2 Replies)
I have been doing automation of daily check activity for a server, i have been using sqls to retrive the data and while loop for reading the data from the file for several activities. BUT i got a show stopper the below one.. where the data is getting store in $temp_file, but not being read by while... (1 Reply)
$# some text
$$ some text
$@ some text
$$. some text
Mg1 some text
Mg2 some text
.
.
.
Mg10 some text
The above 10 lines are to be extracted except the lines starting from $#,$$.,... (4 Replies)
Specifically on RHEL 5.7.
When does the underlying ksh process open and close files? Every time they're accessed, or as little as possible?
Say you have some script like:
CreateFiles()
{
grep "<VALUE1>" ${infile} >> ${outfile}
grep "<VALUE2>" ${infile} >> ${outfile}
...... (4 Replies)
I have a file
1
298167
298168
1093209
1093210
1422663
I want to write a code where in I want to read contents of above file
like first read is 1
second read is 298167
Substract second read from first and if this is greater than or less than 99,999.
Similarly I want to traverse thru... (3 Replies)
Hi All,
I need to extract the data from the text file. The data of the text file is shown below
#L 0.000017 4.329939 0.000017 4.716267 r7.9 P 1 1;Net=IN32
The extracted data should be IN32. Could anyone help to script in c shell.? (4 Replies)
Discussion started by: gopishrine
4 Replies
LEARN ABOUT MINIX
cut
CUT(1) General Commands Manual CUT(1)NAME
cut - select out columns of a file
SYNOPSIS
cut [ -b | -c] list [file...]
cut -f list [-d delim] [ -s]
OPTIONS -b Cut specified bytes
-c Select out specific characters
-d Change the column delimiter to delim
-f Select out specific fields that are separated by the
-i Runs of delimiters count as one
-s Suppres lines with no delimiter characters, when used
EXAMPLES
cut -f 2 file # Extract field 2
cut -c 1-2,5 file # Extract character columns 1, 2, and 5
cut -c 1-5,7- file # Extract all columns except 6
DESCRIPTION
[file...]" delimiter character ( see delim)" with the -f option. Lines with no delimiters are passwd through untouched"
Cut extracts one or more fields or columns from a file and writes them on standard output. If the -f flag is used, the fields are sepa-
rated by a delimiter character, normally a tab, but can be changed using the -d flag. If the -c flag is used, specific columns can be
specified. The list can be comma or BLANK separated. The -f and -c flags are mutually exclusive. Note: The POSIX1003.2 standard requires
the option -b to cut out specific bytes in a file. It is intended for systems with multi byte characters (e.g. kanji), since MINIX uses
only one byte characters, this option is equivalent to -c. For the same reason, the option -n has no effect and is not listed in this man-
ual page.
SEE ALSO sed(1), awk(9).
CUT(1)