05-19-2006
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I would like to change the lines:
originalline1
originalline2
to:
originalline1new
originalline1newline
originalline2new
originalline2newline
To do this, id like to combine the commands:
sed 's/^/&new/g' file > newfile1
and
sed '/^/ a\\
newline\\
\\ (2 Replies)
Discussion started by: Dave724001
2 Replies
2. UNIX for Dummies Questions & Answers
Hai friend,
I am new to linux..i had gone through most of the commands used in unix but i dont know how to use this commands in my C program..U know about this plz send the example program(C prog with unix command)...
Thank... (3 Replies)
Discussion started by: sundar.lsr
3 Replies
3. UNIX for Dummies Questions & Answers
Hello all,
I am trying to list and count all the files of a particular type in any given directory. I can use the commands separately but when I combine them they do not give an output.
The command for counting the files is ls -1 | wc -l and for listing all the file of particular type say... (2 Replies)
Discussion started by: BigTool4u2
2 Replies
4. UNIX for Advanced & Expert Users
Is there anyway to achieve "find /home -name "*.bashrc" 2>/dev/null" and "PS1="\n>"" in the same command? I just wanna add a line to the previous command to change the PS1 variable to ">". (1 Reply)
Discussion started by: raidkridley
1 Replies
5. Shell Programming and Scripting
Combining many lines to one using awk or any unix cmd
Inputfile:
Output :
Appreciate help on this. (14 Replies)
Discussion started by: pinnacle
14 Replies
6. Shell Programming and Scripting
Hi Guys,
I am looking to optimze these 5 SSH lines to a single SSH to get my machine to not hang! lol!
cat hosts.lst | xargs -n1 -t -i echo 'home/util/timeout 6 0 ssh -q {} top -b > util/{}.top &' >> r_query_info
cat hosts.lst | xargs -n1 -t -i echo 'home/util/timeout 6 0 ssh -q {} uname -r... (5 Replies)
Discussion started by: wick3dsunny
5 Replies
7. Shell Programming and Scripting
I can achieve two tasks with 2 different awk commands:
1) awk -F";;WORD" '{print $2}' file | sed '/^$/d' #to find surface_word
2) awk -F"bw:|gloss:" '// {print $2}' file | sed '/\//!d; s:/*+*: + :g; s:^+::; s: *+ *$::;' #to find segmentation of surface_word
Number 1) finds surface_word... (7 Replies)
Discussion started by: Viernes
7 Replies
8. UNIX for Dummies Questions & Answers
Hi,
I am pretty new to the unix community and have encountered a problem that I am trying to solve. I have 2 files one of which is called passwd file that looks like the following
Sample Output
daemon:x:1:1:daemon:/usr/sbin:/bin/sh
bin:x:2:2:bin:/bin:/bin/sh
sys:x:3:3:sys:/dev:/bin/sh
... (1 Reply)
Discussion started by: raven905
1 Replies
9. Shell Programming and Scripting
Hello all,
I need to send an attachment and text in the body, both in the same Email.
Below are two cammand that send the required data in separate Emails. I need to combine them so that I get just 1 Email containing the attachment & text in the body.
uuencode ${filename} "${file_}" |... (6 Replies)
Discussion started by: Junaid Subhani
6 Replies
10. Shell Programming and Scripting
Hi,
I have identified how to use command chaining as per below on a file, to capture the header of a file, as well as the line containing the C: drive.
$ cat test.txt
Filesystem Size Used Avail Use% Mounted on
rootfs 237G 153G 84G 65% /
none 237G 153G 84G ... (6 Replies)
Discussion started by: sand1234
6 Replies
SYSTEM(3) BSD Library Functions Manual SYSTEM(3)
NAME
system -- pass a command to the shell
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <stdlib.h>
int
system(const char *command);
DESCRIPTION
The system() function hands the argument command to the command interpreter sh(1). The calling process waits for the shell to finish execut-
ing the command, ignoring SIGINT and SIGQUIT, and blocking SIGCHLD.
If command is a NULL pointer, system() will return non-zero if the command interpreter sh(1) is available, and zero if it is not.
RETURN VALUES
The system() function returns the exit status of the shell as returned by waitpid(2), or -1 if an error occurred when invoking fork(2) or
waitpid(2). A return value of 127 means the execution of the shell failed.
SEE ALSO
sh(1), execve(2), fork(2), waitpid(2), popen(3)
STANDARDS
The system() function conforms to ISO/IEC 9899:1990 (``ISO C90'') and is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible.
BSD
June 4, 1993 BSD