Hmm, so [: punct:] would be a good place to start with?
In principle: yes, but as you want to implement the "-r" option you need to break down this class to its member characters anyway.
You might want to start with the following thought: how does a script receive input? There are two ways: via <stdin> and via a file it reads from. If you use:
The script is supposed to open that file and get its input by reading from it. If - in opposition to that - you use
or
The script gets its input by reading from <stdin>. You should start by researching and understanding how a script gathers input in these two ways prior to changing this input.
In perl I want to do remove the top line of my input file then process the next line. I want to do something like
head -1 inputfile > temp
grep -v temp inputfile > newinputfile
cp newinputfile inputfle
is this possible in perl? (3 Replies)
how can i redirect standard input? i dont remember :/, though could you redirec not from a command? i mean, to redirect always stdin and stout (1 Reply)
I tried copy the output files from find command into a directory.
Example,
find / -name core 2>/dev/null | xargs cp????
I have known that we can use xargs to execute command lines from standard input but how to use it in this case.
Or I can do something besides xargs. (2 Replies)
Hi,
How can I removed the directory in the input file?
The script responsible for storing the report in an input file is this:
while }" ]
do
echo "penetration|${penfilename}|${penfilenamedaterange}" >> ${OUT_DIR}/penrpt_emailfile.txt
(( i=i+1 ))
done
For the penfilename:
... (2 Replies)
Hi
I am trying to write a shell script which should take the file as standard input. As file(content and name both) will change for each run. It should read the file line by line. with each line I have to perform certain operation.
For example
I have i file foo, it looks like
/usr/doc/abc... (4 Replies)
Hello,
I am new to scripting.
How do I read multiple lines from the command line?
I know read reads one line, but if I have to read multiple lines, how should I do?
Thanks,
Prasanna (4 Replies)
So, I am new to shell scripting and have a few problems.
I know how to read from standard input but I do not know how to really compare it to say, a character. I am trying to compare it to a character and anything exceeding just a character, the user will get an output message, but the program... (7 Replies)
Hi Geeks,
I am relatively new to Unix. Trying out to achive a shell script by hard learning. Here is my requirment.
1. I have to search for specified strings that are given in .csv file in the directory to find the files for matching strings in the .csv file.
2. If match is found, copy... (1 Reply)
I want to use a content of a file as standard input to a program and dump the output to a file. However, when I try the following code:
./program < input.in > output.out
The output.out is empty. So, how can I handle this problem?
Thanks in advance! (11 Replies)
Discussion started by: Ray Sun
11 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)