Hi,
how could you go about removing words that begin with a certain character.
assuming that this character is '-' I currently have
echo "-hello" | sed s/-/""/
which replaces the leading dash with nothing but I want to remove the whole word, even if there are multiple words beginning... (3 Replies)
Hi,
I have file a.txt as below. I want to add one string root beginning of each line.
Sample file a.txt
aaa
bbb
ccc
Sample output
Root aaa
Root bbb
Root ccc
Can any one help me on this? (6 Replies)
Greetings.
I am a UNIX newbies.
I am currently facing difficulties dealing with a large data set and I would like to ask for helps. I have a input file like this:
ak 1 AAM1
ak 2 AAM1
ak 3 AAM1
ak 11 AMM2
ak 12 AMM2
ak 13 AMM2
ak 14 AMM2
Is there any possibility for me to... (7 Replies)
about 200 files with names as
11_0.pdb
11_60.pdb
12_12.pdb
14_180.pdb
are there in my library...I need to rename all of them by addinf File in front of them as:
File11_0.pdb
File11_60.pdb
File12_12.pdb
File14_180.pdb
I checked many threads but it seems i get even more confused..i... (1 Reply)
Hi,
I am doing something like below:
cat file1>file3and
cat file2>>file3
I wanted to check if there is a way to write a custom message(hardcoded message)something like below at the beginning of each line then PIPE delimitiation and then followed by remaining record.
cat file1... (7 Replies)
My file has the entries like below...
/dev/sds
/dev/sdak
/dev/sdbc
/dev/sdbu
I want to make the file like below
echo 1 > /sys/block/sds/device/rescan
echo 1 > /sys/block/sdak/device/rescan
echo 1 > /sys/block/sdbc/device/rescan
echo 1 > /sys/block/sdbu/device/rescan (2 Replies)
Hi all and apologies for the silly question, but I've searched and I can't get this right.
I have a list of email addresses in a file that I need to blacklist (spam). the list is quite long and I would need to script a small routine so that I can get the following for each line in the file:
db... (4 Replies)
I am trying to write a command and need to count all the words within the file which begin with the letter S
I have run this command
$ grep '^' TheAgileApproach.dat | wc -l
0
$ grep '^' TheAgileApproach.dat | wc -l
1
When I remove the wc -l I see the output as below:
$ grep '^'... (7 Replies)
Discussion started by: simpsa27
7 Replies
LEARN ABOUT NETBSD
look
LOOK(1) BSD General Commands Manual LOOK(1)NAME
look -- display lines beginning with a given string
SYNOPSIS
look [-df] [-t termchar] string [file]
DESCRIPTION
The look utility displays any lines in file which contain string as a prefix. As look performs a binary search, the lines in file must be
sorted.
If file is not specified, the file /usr/share/dict/words is used, only alphanumeric characters are compared and the case of alphabetic char-
acters is ignored.
Options:
-d Dictionary character set and order, i.e. only alphanumeric characters are compared.
-f Ignore the case of alphabetic characters.
-t Specify a string termination character, i.e. only the characters in string up to and including the first occurrence of termchar are
compared.
The look utility exits 0 if one or more lines were found and displayed, 1 if no lines were found, and >1 if an error occurred.
FILES
/usr/share/dict/words the dictionary
COMPATIBILITY
The original manual page stated that tabs and blank characters participated in comparisons when the -d option was specified. This was incor-
rect and the current man page matches the historic implementation.
SEE ALSO grep(1), sort(1)HISTORY
look appeared in Version 7 AT&T UNIX.
BSD June 14, 1993 BSD