If you really want to know who is doing what, there is truss -fae ! Faster than debug statements, and educational.
---------- Post updated at 03:47 PM ---------- Previous update was at 03:09 PM ----------
Seems kinda wild for this simple sed/shell, but it was a bash challenge. I think someone was a byte short, or did the req creep? This has a stdout free of prompts and such, but is sed metachar sensitive. One might use sed/cut to trim the key field out, grep to find interesting line numbers, and then pull the lines from the original.
If I am searching through a text file, and it is setup in hierarchical fashion.
ie:
Memory:
256 MB
DDR
Kingston
CPU:
UltraSparc
800 Mhz
can i somehow search for CPU and pull out lines below it as well?
Like grep only pulls that one line, i want that line... (4 Replies)
Hello,
I am just getting starting with awk and wondering if anyone could help with the following problem.
I have a large file of data, 50,000 rows x 6 columns. I would like to search in blocks of 500 rows for a maximum value in a specific column and compile an output file that prints the... (0 Replies)
Hi Everyone,
I have:
$val="QQ3_1899_CD4".
The output will be:
1899.
I did $val =~ /(\d+)/g; the output is 318994, then i use substr to get those 1899. This is not efficient.
Is any simple way, like just one line can do? Thanks (1 Reply)
Hi,
Need to delete line prior to (INSERT/UPDATE/DELETE). In case ' available, then keep that. Pls refet below details.
Input
======================
l_s := ' INSERT INTO TEST'
l_P PD := ' UPDATE INTO TEST'
l_D := ' DELETE INTO TEST'
This is test
Output... (4 Replies)
Hello, this is probably a simple request but I've been toying with it for a while.
I have a large list of devices and commands that were run with a script, now I have lines such as:
a-router-hostname-C#show ver
I want to print everything up to (and excluding) the # and everything after it... (3 Replies)
I have a list of strings in file:
10 10 AAA
120 13 BBBBB
23 11 CCCCC
11 32 DDDDDD
I want to replace first column of the text such as: 10, 129, 23, 11 with 11, 22, 33, 44.
I can do line by line, but just not sure how to replace partial string without... (1 Reply)
I have this in log file /var/log/maillog
XXX YYY ZZZ :15214 I=:25 AAA BBB CCC
I need awk/sed operation on this, so that it retrieves only the first IP.
cat /var/log/maillog | sed_operation
55.66.77.88 (2 Replies)
Hi I have a question and hope I can get answer here. Thank you in advance.
I have two files:
file1:
aa X
bb Y
cc Z
file2:
cc A
bb B
dd C
aa D
bb E
If the 1st column match in both file1 and file2, the 2nd column in file2 will be replaced by the 2nd column in file1. If there is no... (2 Replies)
Hi, I have a tab delimited text file like this one. I need to do a partial match of a particular cell and then replace matches with an empty cell. So here is a sample:
Smith FordMustang ChevroletCamaro
Miller FordFiesta
Jones KiaSorrento
Davis ChevroletCamaro
Johnson ToyotaHighlander
I... (4 Replies)
Discussion started by: mikey11415
4 Replies
LEARN ABOUT CENTOS
service
service(8) System Manager's Manual service(8)NAME
service - run a System V init script
SYNOPSIS
service SCRIPT COMMAND [OPTIONS]
service --status-all
service --help | -h | --version
DESCRIPTION
service runs a System V init script in as predictable environment as possible, removing most environment variables and with current working
directory set to /.
The SCRIPT parameter specifies a System V init script, located in /etc/init.d/SCRIPT. The supported values of COMMAND depend on the
invoked script, service passes COMMAND and OPTIONS it to the init script unmodified. All scripts should support at least the start and
stop commands. As a special case, if COMMAND is --full-restart, the script is run twice, first with the stop command, then with the start
command.
service --status-all runs all init scripts, in alphabetical order, with the status command.
If the init script file does not exist, the script tries to use legacy actions. If there is no suitable legacy action found and COMMAND is
one of actions specified in LSB Core Specification, input is redirected to the systemctl. Otherwise the command fails with return code 2.
FILES
/etc/init.d
The directory containing System V init scripts.
ENVIRONMENT
LANG, TERM
The only environment variables passed to the init scripts.
SEE ALSO chkconfig(8), ntsysv(8), systemd(1), systemctl(8), systemd.service(5)
Jan 2006 service(8)