I'm trying to delete lines from a large text file using VI.
Every line that I am wanting to delete start with 'S' - all others do not. (A list of users)
I've tried using * but doesn't seem to like it...any ideas...
Doesn't have to be VI - but I'm better with VI than sed/awk. (8 Replies)
Hi All
In a script, I want a user to enter 4 characters, these can be a mix of letters (uppercase and lowercase) and numbers.
In this example $var represents what the user has entered.
eg $var can be A9xZ, 3DDL, bbHp .........etc
I need to check that the user has only entered characters... (2 Replies)
I am trying to strip all leading and trailing spaces of a shell variable using either awk or sed or any other utility, however unscuccessful and need your help.
echo $SH_VAR | command_line Syntax.
The SH_VAR contains embedded spaces which needs to be preserved. I need only for the leading and... (6 Replies)
when writing a shell script (bourne) and using a unix command like 'ls' is there anything special you need to do to use a wildcard (like *)? (3 Replies)
ok, I'm trying to write a script file that lists files with specific elements in the name into a txt file, it looks like this
ls s*.dat > file_names.txt
can't figure out whats wrong with that line, any ideas?
thanks in advance (10 Replies)
Hi All
Please excuse another straightforward question. When creating a tar archive from a directory I am attempting to use wildcards to eliminate certain filetypes (otherwise the archive gets too large). So I am looking for something along these lines.
tar -cf archive.tar * <minus all *.rst... (5 Replies)
Hi,
I have a problem where I need to append few spaces(say 10 spaces) for each line in a file whose length is say(100 chars) and others leave as it is.
I tried to find the length of each line and then if the length is say 100 chars then tried to write those lines into another file and use a sed... (17 Replies)
Hello All,
I am trying to remove all tabspaces and all blankspaces from my file using sed & awk, but not getting proper code. Please help me out.
My file is like this (<b> means one blank space, <t> means one tab space)-
$ cat file
NARESH<b><b><b>KUMAR<t><t>PRADHAN... (3 Replies)
These 2 websites do a GREAT job of explaining different types of wildcards. I learned about the categories of characters which I never knew about at all.
GNU/Linux Command-Line Tools Guide - Wildcards
GREP (1 Reply)
Discussion started by: cokedude
1 Replies
LEARN ABOUT CENTOS
grub-render-label
GRUB-RENDER-LABEL(1) User Commands GRUB-RENDER-LABEL(1)NAME
grub-render-label - generate a .disk_label for Apple Macs.
SYNOPSIS
grub-render-label [OPTION...] [OPTIONS]
DESCRIPTION
Render Apple .disk_label.
-b, --bgcolor=COLOR
use COLOR for background
-c, --color=COLOR
use COLOR for text
-f, --font=FILE
use FILE as font (PF2).
-i, --input=FILE
read text from FILE.
-o, --output=FILE
set output filename. Default is STDOUT
-t, --text=STRING
set the label to render
-v, --verbose
print verbose messages.
-?, --help
give this help list
--usage
give a short usage message
-V, --version
print program version
Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options.
REPORTING BUGS
Report bugs to <bug-grub@gnu.org>.
SEE ALSO
The full documentation for grub-render-label is maintained as a Texinfo manual. If the info and grub-render-label programs are properly
installed at your site, the command
info grub-render-label
should give you access to the complete manual.
grub-render-label (GRUB) 2.02-2ubuntu8.3 July 2018 GRUB-RENDER-LABEL(1)