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Grep from a file variable
Post 42548 by jagannatha on Thursday 30th of October 2003 04:44:18 PM
10-30-2003
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1. Shell Programming and Scripting
Hi,
I'd like to grep a variable that I saved in the program.
Like
grep '0\$variable1' file1
Does someone know what's wrong with this command?
Thanks a lot! (2 Replies)
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Hello! I think this should be an easy solution. I have a large file with many fields of data. The first field has a unique identifier (a subject number) for every record for a chunk of data. Something like this:
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All I want to do is find out if the string 'NO' is in a file by checking for a return code of 0 if there is a match. The grep works fine on the command line directly naming the file but I am obviously not using the correct syntax within the shell script as I consistently get the error message
... (5 Replies)
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Hey guys,
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5. Shell Programming and Scripting
how can I use grep with a variable to find a value?
cat data.out
Hello World
grep "Hello World" data.out
Hello World ## Value found
I want to do something like this but can't seem to get it to work any
suggestions would be appreciated.
var="Hello World"
grep $var data.out (3 Replies)
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6. Shell Programming and Scripting
I want to search a text in file but that file is pointing to variable.
ex:
file=there was nothing special
grep "there was nothing" $file
but its not working . Can u let me know that how we can use variable($file) in grep command.
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7. Shell Programming and Scripting
I have a pattern like:
column "5" is missing
PS: the no is in double quotes.
The number usally changes, so we use a loop to grep.
grep 'column "$number" is missing' filename.txt
But it is not working....
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8. Shell Programming and Scripting
Hi,
I have a loop running until a variable L that is read previously in the full script. I'd like to grep some information in an input file at a line that contains the value of the loop parameter $i.
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9. Shell Programming and Scripting
Hi,
I am looking for the following:
1. A command to 'grep' the variable from a file
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IAGLOBAL_USERID=admin
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I've got a file that I'm trying to grep through that looks like this:
alpha1
alpha2
alpha3
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beta2
gamma5
gamma6
gamma7
gamma8
gamma9
and I want the output to only contain the line with the highest value for each, so the output I want is:
alpha3
beta2
gamma9
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LEARN ABOUT OPENSOLARIS
mknod
mknod(1M) System Administration Commands mknod(1M) NAME
mknod - make a special file SYNOPSIS
mknod name b major minor mknod name c major minor mknod name p DESCRIPTION
mknod makes a directory entry for a special file. OPTIONS
The following options are supported: b Create a block-type special file. c Create a character-type special file. p Create a FIFO (named pipe). OPERANDS
The following operands are supported: major The major device number. minor The minor device number; can be either decimal or octal. The assignment of major device numbers is specific to each system. You must be the super-user to use this form of the command. name A special file to be created. USAGE
See largefile(5) for the description of the behavior of mknod when encountering files greater than or equal to 2 Gbyte ( 2^31 bytes). ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
ftp(1), in.ftpd(1M), mknod(2), symlink(2), attributes(5), largefile(5) NOTES
If mknod(2) is used to create a device, the major and minor device numbers are always interpreted by the kernel running on that machine. With the advent of physical device naming, it would be preferable to create a symbolic link to the physical name of the device (in the /devices subtree) rather than using mknod. SunOS 5.11 16 Sep 1996 mknod(1M)