Applying sed against a file from a list of values stored in a variable
Hi Forum.
I have the following challenge at work that I need to write a script for.
I have a file abc.txt with the following contents:
I want to be able to search/replace in abc.txt - the first 4 characters anything starting with 4560 to 7777; 4570 to 8888; 4580 to 9999
I want to use a variable (if possible since in the future the list could be expanded and I would only need to expand the variable values without any additional coding):
How would I loop thru the search string list and run the sed command on abc.txt?
Last edited by Scrutinizer; 07-24-2015 at 06:46 PM..
Hi,
I want to write a perl script, which will increment number stored in file. I want to do this without any file handles. I think we have to use some UNIX commands. I am not sure how to do this with file handles.
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I have a variable say var1 (output from somewhere, which I can't change)which store something like this:
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name=fred
age=25
address="123 abc"
password=pass1234
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my $logFH = $connObj->get('logFH');
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output
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In the following code, why the variable 'i' still retains the value 10 instead of 11? Why it is not possible to alter this variable's value?
int main() {
const int i = 10;
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hey, i have stored values of query like this
val_2=$( sqlplus -s rte/rted1@rel75d1 << EOF
set heading off
select source_id from cvt_istats where istat_id > $val_1;
exit
EOF
)
echo $val_2
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1
2
3
4
5
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Hi everyone,
This is an exemple of inpout.txt file (a "," delimited text file which can be open as csv file):
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The bash bash below extracts the oldest folder from a directory and stores it in filename
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Discussion started by: cmccabe
2 Replies
LEARN ABOUT REDHAT
dos2unix
dos2unix(1) General Commands Manual dos2unix(1)NAME
dos2unix - DOS/MAC to UNIX text file format converter
SYNOPSYS
dos2unix [options] [-c convmode] [-o file ...] [-n infile outfile ...]
Options:
[-hkqV] [--help] [--keepdate] [--quiet] [--version]
DESCRIPTION
This manual page documents dos2unix, the program that converts plain text files in DOS/MAC format to UNIX format.
OPTIONS
The following options are available:
-h --help
Print online help.
-k --keepdate
Keep the date stamp of output file same as input file.
-q --quiet
Quiet mode. Suppress all warning and messages.
-V --version
Prints version information.
-c --convmode convmode
Sets conversion mode. Simulates dos2unix under SunOS.
-o --oldfile file ...
Old file mode. Convert the file and write output to it. The program default to run in this mode. Wildcard names may be used.
-n --newfile infile outfile ...
New file mode. Convert the infile and write output to outfile. File names must be given in pairs and wildcard names should NOT be
used or you WILL lost your files.
EXAMPLES
Get input from stdin and write output to stdout.
dos2unix
Convert and replace a.txt. Convert and replace b.txt.
dos2unix a.txt b.txt
dos2unix -o a.txt b.txt
Convert and replace a.txt in ASCII conversion mode. Convert and replace b.txt in ISO conversion mode. Convert c.txt from Mac to Unix
ascii format.
dos2unix a.txt -c iso b.txt
dos2unix -c ascii a.txt -c iso b.txt
dos2unix -c mac a.txt b.txt
Convert and replace a.txt while keeping original date stamp.
dos2unix -k a.txt
dos2unix -k -o a.txt
Convert a.txt and write to e.txt.
dos2unix -n a.txt e.txt
Convert a.txt and write to e.txt, keep date stamp of e.txt same as a.txt.
dos2unix -k -n a.txt e.txt
Convert and replace a.txt. Convert b.txt and write to e.txt.
dos2unix a.txt -n b.txt e.txt
dos2unix -o a.txt -n b.txt e.txt
Convert c.txt and write to e.txt. Convert and replace a.txt. Convert and replace b.txt. Convert d.txt and write to f.txt.
dos2unix -n c.txt e.txt -o a.txt b.txt -n d.txt f.txt
DIAGNOSTICS BUGS
The program does not work properly under MSDOS in stdio processing mode. If you know why is that so, please tell me.
AUTHORS
Benjamin Lin - <blin@socs.uts.edu.au>
Bernd Johannes Wuebben (mac2unix mode) <wuebben@kde.org>
MISCELLANY
Tested environment:
Linux 1.2.0 with GNU C 2.5.8
SunOS 4.1.3 with GNU C 2.6.3
MS-DOS 6.20 with Borland C++ 4.02
Suggestions and bug reports are welcome.
SEE ALSO unix2dos(1)mac2unix(1)1995.03.31 dos2unix v3.0 dos2unix(1)