07-18-2008
It's because you changed the double quotes " to single quotes '.
Single quotes prevent variables from being evaluated.
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1. Shell Programming and Scripting
Hi all,
I have a text file and I want to clean up the file by only print those lines start with the date. Is there anyway I can do that?
Thanks
CT (1 Reply)
Discussion started by: CamTu
1 Replies
2. UNIX for Dummies Questions & Answers
It my first post here .
I just want to get the content of the file as values for printinting along with line number in LINUX
Here is what I tried .
$ cat test1.txt
ABC
DSF
GHI
JKL
MNO
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STU
VWX
YZO
$ cat test.sh
#!/bin/ksh (4 Replies)
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3. Shell Programming and Scripting
Hi All,
File that I have:
<ct>
<name>group
<value>1
<value>2
<value>3
</ct>-->file
The output that I needed is
<ct>
<name>group
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<ct>
<name>group
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4. Shell Programming and Scripting
Hi I have a very long file with 4 columns of numbers for example
1875 1876 12725 12723
13785 13786 4232 4230
13184 13185 ... (2 Replies)
Discussion started by: ananyob
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5. Windows & DOS: Issues & Discussions
Hi
I want to print lines 20-30 from a file.
In UNIX , this command will work
sed -n '20,30p' file
However what is the equivalent command in DOS ?
Pls help me ! (2 Replies)
Discussion started by: dashing201
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6. Shell Programming and Scripting
Hi all,
This should be very easy but I can't figure it out...
I have a file that looks like this:
@SRR057408.1 FW8Y5CK02R652T length=34
AGCAGTGGTATCAACGCAGAGTAAGCAGTGGTAT
+SRR057408.1 FW8Y5CK02R652T length=34
FIIHFF6666?=:88@@@BBD:::?@ABBAAA>8
@SRR057408.2 FW8Y5CK02TBMHV length=52... (1 Reply)
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7. Shell Programming and Scripting
Hi,
I have two files. 1st file has 1 column (huge file containing ~19200000 lines) and 2nd file has 2 columns (small file containing ~6000 lines).
#################################
huge_file.txt
a
a
ab
b
##################################
small_file.txt
a 1.5
b 2.5
ab ... (4 Replies)
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8. Shell Programming and Scripting
Hello everyone,
I have a little script below:
die "Usage infile outfile reGex" if @ARGV != 3;
($regex) = @ARGV;
open(F,$ARGV) or die "Can't open";
open(FOUT,"+>$ARGV") or die "Can't open";
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9. UNIX for Dummies Questions & Answers
Hello I am a new unix user, and I have a work related task to compare 2 files and print all of the lines in file 2 that contain a string from file 1 Note: the fields are in different columns in the files. I suspect the is a good use for awk? Thanks for your time & help
File 1
123 232 W343... (6 Replies)
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10. Shell Programming and Scripting
Dear All,
a.txt
A 1 Z
A 1 ZZ
B 2 Y
B 2 AA
how can i use awk one line to achieve the result:
A Z|ZZ
B Y|AA
Thanks (5 Replies)
Discussion started by: jimmy_y
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UNIQ(1) FSF UNIQ(1)
NAME
uniq - remove duplicate lines from a sorted file
SYNOPSIS
uniq [OPTION]... [INPUT [OUTPUT]]
DESCRIPTION
Discard all but one of successive identical lines from INPUT (or standard input), writing to OUTPUT (or standard output).
Mandatory arguments to long options are mandatory for short options too.
-c, --count
prefix lines by the number of occurrences
-d, --repeated
only print duplicate lines
-D, --all-repeated[=delimit-method] print all duplicate lines
delimit-method={none(default),prepend,separate} Delimiting is done with blank lines.
-f, --skip-fields=N
avoid comparing the first N fields
-i, --ignore-case
ignore differences in case when comparing
-s, --skip-chars=N
avoid comparing the first N characters
-u, --unique
only print unique lines
-w, --check-chars=N
compare no more than N characters in lines
--help display this help and exit
--version
output version information and exit
A field is a run of whitespace, then non-whitespace characters. Fields are skipped before chars.
AUTHOR
Written by Richard Stallman and David MacKenzie.
REPORTING BUGS
Report bugs to <bug-coreutils@gnu.org>.
COPYRIGHT
Copyright (C) 2002 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
LAR PURPOSE.
SEE ALSO
The full documentation for uniq is maintained as a Texinfo manual. If the info and uniq programs are properly installed at your site, the
command
info uniq
should give you access to the complete manual.
uniq (coreutils) 4.5.3 February 2003 UNIQ(1)