07-18-2008
thread moved to "shell programming..." please choose the right forum for your questions!
9 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I have a piece of code that I do not want to continuously repeat. I want to call script2 from script1 and pass a parameter. Here is an example:
Script1:
.......
nohup ./Script2 PARAMETER
.......
Script2:
if
# Checks if any params.
then
echo "No parameters passed to function."
... (4 Replies)
Discussion started by: rvprod
4 Replies
2. UNIX for Dummies Questions & Answers
Hi,
Can i pass a parameter(not a file name) as a parameter to a awk program?
eg;
$awk -f test 1 2 3
here test is the filename...and 1,2,3 are the i/p parameters?
thank you:-) (2 Replies)
Discussion started by: unisam
2 Replies
3. Shell Programming and Scripting
I would like to write a scirpt a.sh that it first checks the first parameter of the input. If it fulfill some condition ,then run an executable program b by using all the parameter.
ie.
> ./a.sh 10 20 30 40 50
Then a.sh first checks the first parameter, 10, if it mathes the requirement, then... (2 Replies)
Discussion started by: alfredo
2 Replies
4. UNIX for Dummies Questions & Answers
I have something like
cp -p <dir>filename1.dat <dir2>filename1.dat
there are many other operations in it
I mean that filename1.dat will keep on changing
I need to write a subroutine so that i can pass filename1 or 2 or 3 .dat as parameter
Thanking you in advance
Any help wuld be appreciated (2 Replies)
Discussion started by: ssuresh1999
2 Replies
5. UNIX for Dummies Questions & Answers
Hello
I have a simple code like this one:
#!/bin/ksh
VER=$1
cat /usr/text | while read line
do
echo $line
done
Let's say $1=1.0.0 and the contents of text is:
abcd.cfg
asdf
I would like the output to be like this
abcd1.0.0.cfg
asdf1.0.0
I am thinking of passing the... (5 Replies)
Discussion started by: khestoi
5 Replies
6. Shell Programming and Scripting
Hi,
I am new in Ubuntu, I will be glud to know:
1. How to pass a parameter from the terminal to a file that I write in shell script. What is the command line I need to write in the terminal?
2. How to get the parameter in the file? What do I need to write in the file?
3. What kind of file is... (1 Reply)
Discussion started by: vess
1 Replies
7. Shell Programming and Scripting
Hi,
How to pass parameter to run folloing script?
#parameters are div, dept, style
U run_convert_pdm.ksh Mens 44 7542
U run_convert_pdm.ksh "Mens Knit" 44 7541
The first command works fine but the second needs to have two words together , it does not work even if
I have used double... (15 Replies)
Discussion started by: sandy162
15 Replies
8. Shell Programming and Scripting
My script(ksh) works fine for
---------------------------------------------------
sed -n '28,31p' ${l_name} >> ${LOG_DIR}/Email.txt
---------------------------------------------------
But I wand to pass parrmeter to this syntax
I did the following things ... (14 Replies)
Discussion started by: deep_kol
14 Replies
9. Shell Programming and Scripting
Hi,
I have following for loop , please let me know how to get ${TXP_EXT_TABLE_${i}_SQL} parameter with 1DAY and 7DAY values.
for i in 1DAY 7DAY
do
${NZSQL_DIR}/nzsql -h ${HOST} -time -v ON_ERROR_STOP=1 -f ${SQL_DIR}/${TXP_EXT_TABLE_${i}_SQL} > ${TMP_LOG_FILE} 2>&1
done
... (4 Replies)
Discussion started by: sandy162
4 Replies
system(3C) system(3C)
NAME
system - issue a shell command
SYNOPSIS
#include <stdlib.h>
int system(const char *string);
The system() function causes string to be given to the shell as input, as if string had been typed as a command at a terminal. The invoker
waits until the shell has completed, then returns the exit status of the shell in the format specified by waitpid(3C).
If string is a null pointer, system() checks if the shell exists and is executable. If the shell is available, system() returns a non-zero
value; otherwise, it returns 0. The standard to which the caller conforms determines which shell is used. See standards(5).
The system() function executes vfork(2) to create a child process that in turn invokes one of the exec family of functions (see exec(2)) on
the shell to execute string. If vfork() or the exec function fails, system() returns -1 and sets errno to indicate the error.
The system() function fails if:
EAGAIN The system-imposed limit on the total number of processes under execution by a single user would be exceeded.
EINTR The system() function was interrupted by a signal.
ENOMEM The new process requires more memory than is available.
USAGE
The system() function manipulates the signal handlers for SIGINT, SIGQUIT, and SIGCHLD. It is therefore not safe to call system() in a mul-
tithreaded process, since some other thread that manipulates these signal handlers and a thread that concurrently calls system() can inter-
fere with each other in a destructive manner. If, however, no such other thread is active, system() can safely be called concurrently from
multiple threads. See popen(3C) for an alternative to system() that is thread-safe.
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
|MT-Level |Unsafe |
+-----------------------------+-----------------------------+
ksh(1), sh(1), exec(2), vfork(2), popen(3C), waitpid(3C), attributes(5), standards(5)
18 Dec 2003 system(3C)