Hi,
I'm curious about the advantage of forking and executing a program in a user shell as opposed to forking and executing the program directly without the user shell.
For example:
why is it often like:
SSHD->fork&exec(shell, sftp-server)->fork&exec(sftp-server)
And Not like:
... (2 Replies)
Hi All,
Can we pass arguments while calling the perl script and as well as ask user input during execution of the script?
My program is as below:
I am passing arg1 and arg2 as argements to test.pl
]./test.pl arg1 arg2
Inside the test.pl I have :
print "Do you want a name ? (y/n) : ";... (2 Replies)
If I want all user input to start with " : " if not display error
or what I asking is how to do if statement that control a first letter of string that we want to start with. and not worry about the rest
Thank (1 Reply)
Hi, I want to list all file that match user input ( specified shell wildcard) but when I compile it dont list me
#!/usr/bin/perl -w
print "Enter Advance Search Function: ";
chomp ($func = <STDIN>);
my @files = glob("$func");
foreach my $file (@files)
{
print "$file\n";... (1 Reply)
Hi, How to create array every time user input and store user input and display all array
print " Enter input "
my @input = split(' ', $input)
chmop($input = <STDIN>;
foreach ($input)
{
@array= @input;
}
print @array"\n"; (1 Reply)
I have a program that returns a shell script and I want to execute the script.
I'll use cat in my simple example, but wget is an example that is feasible.
$ # First setup a script
$ echo "ls
> df" > simple
$ # "cat simple" is now a program that returns a script
$ cat simple
ls
df
$ ... (3 Replies)
Please tell me how to write a perl script that asks the user to enter words and that passes them to a variable.
In bash, the "read" command would achieve such user interaction.
#!/bin/bash
read -p "Enter files: " vFiles
However, I am looking for perl version of something equivalent... (2 Replies)
Hello friends . I am newbie to perl scripting but still managed to write a code but i am stuck at a place where i need help . Below is the code and can someone help me in taking user input for changing the font size for a html table .Thank you in advance
#!/bin/ksh
echo " Enter the Directory... (4 Replies)
Hi Team,
Can you pls advise in java how can we call a shell script, actly I have a shell script at the following location
/opt/dd/ajh.sh
now I can execute this script by opening the session through putty by entering the servers details and password and then navigating to the following... (2 Replies)
I am creating a bash that uses perl . The below code closes before the input is entered. If I run the perl as a .pl it is fine. What am I doing wrong? Thank you :).
#!/bin/bash
cd 'C:\Users\cmccabe\Desktop\wget'
wget -O getCSV.txt http://xxx.xx.xxx.xxx/data/getCSV.csv
print... (4 Replies)
Discussion started by: cmccabe
4 Replies
LEARN ABOUT BSD
cat
CAT(1) General Commands Manual CAT(1)NAME
cat - catenate and print
SYNOPSIS
cat [ -u ] [ -n ] [ -s ] [ -v ] file ...
DESCRIPTION
Cat reads each file in sequence and displays it on the standard output. Thus
cat file
displays the file on the standard output, and
cat file1 file2 >file3
concatenates the first two files and places the result on the third.
If no input file is given, or if the argument `-' is encountered, cat reads from the standard input file. Output is buffered in the block
size recommended by stat(2) unless the standard output is a terminal, when it is line buffered. The -u option makes the output completely
unbuffered.
The -n option displays the output lines preceded by lines numbers, numbered sequentially from 1. Specifying the -b option with the -n
option omits the line numbers from blank lines.
The -s option crushes out multiple adjacent empty lines so that the output is displayed single spaced.
The -v option displays non-printing characters so that they are visible. Control characters print like ^X for control-x; the delete char-
acter (octal 0177) prints as ^?. Non-ascii characters (with the high bit set) are printed as M- (for meta) followed by the character of
the low 7 bits. A -e option may be given with the -v option, which displays a `$' character at the end of each line. Specifying the -t
option with the -v option displays tab characters as ^I.
SEE ALSO cp(1), ex(1), more(1), pr(1), tail(1)BUGS
Beware of `cat a b >a' and `cat a b >b', which destroy the input files before reading them.
4th Berkeley Distribution May 5, 1986 CAT(1)