I am trying to understand what the grep command in ubuntu is trying to do here.
The contents of my test file is given below
Code:
harsha@harsha-H67MA-USB3-B3:~/Documents$ cat data
abcd
efghi
jklmno
pqr
stuv
wxyz
When I grep for 3 dots (...) without the parenthesis as follows I would expect the output to match the first 3 characters in the above file. But the output I am seeing shows that it matches more than 3 characters in some lines. Can anyone help me here understand why the 3rd line is being shown to match more than 3 characters.
Code:
harsha@harsha-H67MA-USB3-B3:~/Documents$ grep ... data
abcd
efghi
jklmnopqrstuv
wxyz
please send the logic or program to find the matching characters between two strings
for ex string1 :abc
string2 :adc
no .of matching characters is 2(a,c) (9 Replies)
how do i check if the first character is a parenthese in pattern matching?
if ] obviously doesnt work. How do I use it to compare so it doesnt try to use it to group. (5 Replies)
Hi there,
I have a file with lines like these:
0105:ffff0000:001b:01f4:25:434
0299:ffff0000:0009:01f4:2:319
02d2:ffff0000:000e:01f4:2:507
The above values are split up using ":" characters.
I would like capture each value, no matter what length.
Take for example the first line... (8 Replies)
Dear all,
I'm stuck on a certain problem regarding counting the number of characters in one line and then adjusting the number of characters of another line to this number.
This was my original input data:
@HWI-ST471_57:1:1:1231:2079/2... (4 Replies)
hi
i am writing a hangman script and am having trouble checking the correct letters against the word
i need the script to compare the word against the letters guessed that are correct so once all the letters within the word have been guessed it will alow me to create a wining senario
eg
... (3 Replies)
hi
i am writing a hangman script and am having trouble checking the correct letters against the word
i need the script to compare the word against the letters guessed that are correct so once all the letters within the word have been guessed it will alow me to create a wining senario
this must... (1 Reply)
I want to check where our programmers are using "delete" instead of "delete" in their C++ code:
grep -r delete *cpp | grep -v
However, this statement and variations thereof (escaping with backslash (\), single quotes ('), double quotes ("), accolades ({)) always lead to the following message:... (2 Replies)
I need to write an Unix script to report the number of SQL files in my home directory, ending with .sql . The script should, also, be checking whether there is a file with an underscore in its name. If that is the case, the underscore should be converted to a dash (‐); for example... (1 Reply)
hii all
i have a file a which contains some thing like this
strand smthg position
+ yyx 3020
- yyw 10,000
now i have another file (file2) which contains the data starting from 1 to n positions
i want to refer first file if + ... (4 Replies)
hi to all,
i am writing a simple file program in C which has to take a string of length n as input and match that input string with first n character of the line in file. if it does not match it has to compare with first n characters of next line. i am finding it difficult to know how exactly to... (2 Replies)
Discussion started by: ntrikoti
2 Replies
LEARN ABOUT OPENDARWIN
set_color
set_color(1) fish set_color(1)NAME
set_color - set_color - set the terminal color
set_color - set the terminal color
Synopsis
set_color [-v --version] [-h --help] [-b --background COLOR] [COLOR]
Description
Change the foreground and/or background color of the terminal. COLOR is one of black, red, green, brown, yellow, blue, magenta, purple,
cyan, white and normal.
o -b, --background Set the background color
o -c, --print-colors Prints a list of all valid color names
o -h, --help Display help message and exit
o -o, --bold Set bold or extra bright mode
o -u, --underline Set underlined mode
o -v, --version Display version and exit
Calling set_color normal will set the terminal color to whatever is the default color of the terminal.
Some terminals use the --bold escape sequence to switch to a brighter color set. On such terminals, set_color white will result in a grey
font color, while set_color --bold white will result in a white font color.
Not all terminal emulators support all these features. This is not a bug in set_color but a missing feature in the terminal emulator.
set_color uses the terminfo database to look up how to change terminal colors on whatever terminal is in use. Some systems have old and
incomplete terminfo databases, and may lack color information for terminals that support it. Download and install the latest version of
ncurses and recompile fish against it in order to fix this issue.
Version 1.23.1 Sun Jan 8 2012 set_color(1)