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
SLEEP(1) BSD General Commands Manual SLEEP(1)
NAME
sleep -- suspend execution for an interval of time
SYNOPSIS
sleep seconds
DESCRIPTION
The sleep utility suspends execution for a minimum of seconds. It is usually used to schedule the execution of other commands (see EXAMPLES
below).
Note: The NetBSD sleep command will accept and honor a non-integer number of specified seconds. This is a non-portable extension, and its
use will nearly guarantee that a shell script will not execute properly on another system.
When the SIGINFO signal is received, the estimate of the amount of seconds left to sleep is printed on the standard output.
EXIT STATUS
The sleep utility exits with one of the following values:
0 On successful completion, or if the signal SIGALRM was received.
>0 An error occurred.
EXAMPLES
To schedule the execution of a command for 1800 seconds later:
(sleep 1800; sh command_file >& errors)&
This incantation would wait half an hour before running the script command_file. (See the at(1) utility.)
To reiteratively run a command (with csh(1)):
while (1)
if (! -r zzz.rawdata) then
sleep 300
else
foreach i (*.rawdata)
sleep 70
awk -f collapse_data $i >> results
end
break
endif
end
The scenario for a script such as this might be: a program currently running is taking longer than expected to process a series of files, and
it would be nice to have another program start processing the files created by the first program as soon as it is finished (when zzz.rawdata
is created). The script checks every five minutes for the file zzz.rawdata, when the file is found, then another portion processing is done
courteously by sleeping for 70 seconds in between each awk job.
SEE ALSO
at(1), nanosleep(2), sleep(3)
STANDARDS
The sleep command is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible.
BSD
August 13, 2011 BSD