Unix is the name of an operating system. And unix is a registered trademark. This is what makes things murky.
One of my favorite books is The Design and Implementation of the 4.3BSD UNIX Operating System. That book is out of print, but a newer book is available: The Design and Implementation... (0 Replies)
My script is throwing the error 'Syntax error: redirection unexpected'
My line of code..
cat nsstatustest.html | sed s/<tr><td align="left">/<tr><td align="left" bgcolor="#000000"><font color="white">/ > ztmp.Ps23zp2s.2-Fpps3-wmmm0dss3
HTML tags are getting in the way but they're needed to... (3 Replies)
Hi,
I use this command in Linux but if I run the same command does not work in freebsd.
Follow the below command:
Linux works:
sed -e '1731a\' -e '####' squid.conf > squid2.conf ; sed -e '1731a\' -e 'acl TESTE_ip src 192.168.1.1/255.255.255.255' squid2.conf > squid.conf ; sed -e... (7 Replies)
Hello All,
I have something like below
LDC100/rel/prod/libinactrl.a
LAA2000/rel/prod/libinactrl.a
I want to remove till first forward slash that is outputshould be as below
rel/prod/libinactrl.a
rel/prod/libinactrl.a
How can I do that ??? (8 Replies)
Hi,
I am running a script sample.sh in bash environment .In the script i am using sed and awk commands which when executed individually from terminal they are getting executed normally but when i give these sed and awk commands in the script it is giving the below errors :-
./sample.sh: line... (12 Replies)
I just started a new semester and I started my UNIX class yesterday. I've already decided to use python along with my learning process but what I really want to use with it is Kali as my UNIX/Linux platform to learn off of since I already wanted to learn Cyber Sec. anyways. I just wanted to know if... (12 Replies)
Hello,
I am on a Mac and trying to clean up some monthly files with a very simple SED:
sed '3,10d;/<ACROSS>/,$d' input.txt > output.txt
(from the input, delete lines 3 - 10; then delete from the line containing <ACROSS> to the end of the file)
then output to output.txt
Even when I try... (2 Replies)
Discussion started by: verbatim
2 Replies
8. Post Here to Contact Site Administrators and Moderators
We work hard to make The UNIX and Linux Forums one of the best UNIX and Linux knowledge sources on the net. The site is certainly one of the top UNIX and Linux Q&A sites on the web. In order to provide certain members the best quality account services, you can now get some great extra features by... (2 Replies)
Forum Moderation @UNIX.com | The UNIX and Linux Forums
https://youtu.be/WGwgibE4Rq0
Also note: In the video I mentioned removing legacy menu items in the ModCP which are unused. I have already "CSS'ed out" the unused menu items:
... (0 Replies)
OFF 00280456 - 2014|1|2020_STATUS|GROUP_NAME|SUBGROUP_NAME|CLASS_NAME|GROUP_ID|SUBGROUP_ID
I have above header in file. I need to replace 2020_STATUS with STATUS.
2020_STATUS is not always same but the column name will have STATUS all of the time. For instance column name might be 2019_STATUS... (1 Reply)
Discussion started by: jmadhams
1 Replies
LEARN ABOUT PLAN9
grep
GREP(1) General Commands Manual GREP(1)NAME
grep - search a file for a pattern
SYNOPSIS
grep [ option ... ] pattern [ file ... ]
DESCRIPTION
Grep searches the input files (standard input default) for lines (with newlines excluded) that match the pattern, a regular expression as
defined in regexp(6). Normally, each line matching the pattern is `selected', and each selected line is copied to the standard output.
The options are
-c Print only a count of matching lines.
-h Do not print file name tags (headers) with output lines.
-i Ignore alphabetic case distinctions. The implementation folds into lower case all letters in the pattern and input before interpre-
tation. Matched lines are printed in their original form.
-l (ell) Print the names of files with selected lines; don't print the lines.
-L Print the names of files with no selected lines; the converse of -l.
-n Mark each printed line with its line number counted in its file.
-s Produce no output, but return status.
-v Reverse: print lines that do not match the pattern.
Output lines are tagged by file name when there is more than one input file. (To force this tagging, include /dev/null as a file name
argument.)
Care should be taken when using the shell metacharacters $*[^|()= and newline in pattern; it is safest to enclose the entire expression in
single quotes '...'.
SOURCE
/sys/src/cmd/grep.c
SEE ALSO ed(1), awk(1), sed(1), sam(1), regexp(6)DIAGNOSTICS
Exit status is null if any lines are selected, or non-null when no lines are selected or an error occurs.
GREP(1)