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1. UNIX for Dummies Questions & Answers
Hi everyone
I have a problem with my script
If I try directly this command
/usr/bin/nice -n 19 mysqldump -u root --password="******" wiki_schneider -c | nice -n 19 gzip -9 > /point_de_montage/$(date '+%Y%m%d')-wiki-db.sql.gz
It works
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2. Shell Programming and Scripting
Hello all,
Here is what my bash script does: sums number columns, saves the tot in new column, outputs if tot >= threshold val:
> cat getnon0file.sh
#!/bin/bash
this="getnon0file.sh"
USAGE=$this"
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#
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3. Shell Programming and Scripting
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4. Shell Programming and Scripting
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The scripts(ksh) is on Linux box.
If I run script from terminal, it transfers files to directory. Where as If
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5. Shell Programming and Scripting
Gurus,
I have written a shell script to backup a database and applications. This is how the script works:
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6. UNIX for Dummies Questions & Answers
hi
i have file extentioned with test.vbs. i am able to run this file n execute through command promt but i dont know how to run in shell script
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file name is test.vbs which contains
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Set objShell = CreateObject("Wscript.Shell")
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7. Windows & DOS: Issues & Discussions
Hi,
I have an awk script which performs simple operations of variable assignments and finally printing the variables in custom form.
BEGIN {FS=OFS="\n"}
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8. Shell Programming and Scripting
Hey all,
Just wanted to get some input on a script I am using to import files into a MySQL database.
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9. Shell Programming and Scripting
I hope someone can shed any light on this mystery.
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I... (15 Replies)
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10. Shell Programming and Scripting
I am writing a menu script and one of the options is to access a Command Prompt and return to the menu via CTRL-D. I have tried using a loop and echoing the PS1 value, then using read to assign whatever is entered into a variable, then executing the value of that variable as a command using
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UNBUFFER(1) General Commands Manual UNBUFFER(1)
NAME
unbuffer - unbuffer output
SYNOPSIS
unbuffer program [ args ]
INTRODUCTION
unbuffer disables the output buffering that occurs when program output is redirected from non-interactive programs. For example, suppose
you are watching the output from a fifo by running it through od and then more.
od -c /tmp/fifo | more
You will not see anything until a full page of output has been produced.
You can disable this automatic buffering as follows:
unbuffer od -c /tmp/fifo | more
Normally, unbuffer does not read from stdin. This simplifies use of unbuffer in some situations. To use unbuffer in a pipeline, use the
-p flag. Example:
process1 | unbuffer -p process2 | process3
CAVEATS
unbuffer -p may appear to work incorrectly if a process feeding input to unbuffer exits. Consider:
process1 | unbuffer -p process2 | process3
If process1 exits, process2 may not yet have finished. It is impossible for unbuffer to know long to wait for process2 and process2 may
not ever finish, for example, if it is a filter. For expediency, unbuffer simply exits when it encounters an EOF from either its input or
process2.
In order to have a version of unbuffer that worked in all situations, an oracle would be necessary. If you want an application-specific
solution, workarounds or hand-coded Expect may be more suitable. For example, the following example shows how to allow grep to finish pro-
cessing when the cat before it finishes first. Using cat to feed grep would never require unbuffer in real life. It is merely a place-
holder for some imaginary process that may or may not finish. Similarly, the final cat at the end of the pipeline is also a placeholder
for another process.
$ cat /tmp/abcdef.log | grep abc | cat
abcdef
xxxabc defxxx
$ cat /tmp/abcdef.log | unbuffer grep abc | cat
$ (cat /tmp/abcdef.log ; sleep 1) | unbuffer grep abc | cat
abcdef
xxxabc defxxx
$
BUGS
The man page is longer than the program.
SEE ALSO
"Exploring Expect: A Tcl-Based Toolkit for Automating Interactive Programs" by Don Libes, O'Reilly and Associates, January 1995.
AUTHOR
Don Libes, National Institute of Standards and Technology
1 June 1994 UNBUFFER(1)