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Try:


awk -F',' 'BEGIN { OFS=","; p=0 } $1 != 0 { p = $1 } { $1 = p }1' file

Try:


for f in *txt.xls; do s=${f#*.}; p=${f%.$suffix}; echo mv $f ${p}_$(date +%Y%m%d_%H%M%S%N).${s}; done

Couple of ways to get the filename.


[~]> awk 'OFS="," { print FILENAME, $0 }' /etc/passwd
/etc/passwd,root:x:0:0:root:/root:/bin/bash
/etc/passwd,bin:x:1:1:bin:/bin:/sbin/nologin...

[~]> echo "73423555","73423556","73423557","73423558","73423559" | awk 'BEGIN { RS="," }1'
73423555
73423556
73423557
73423558
73423559

man last

$ cat file1
Tom
Dick
Harry
Charlie
$ cat file2
Boston
Newyork
LA
Toledo
$ paste file{1,2} | cat -n
1 Tom Boston
2 Dick Newyork
3 Harry LA
4...

Where are you planning to execute it ? Windows or *nix ? a.out is the executable. It is not an object file.

You don't need perl for this. You could use a for loop to go through the files and use stat(1) to get the timestamp.

If you have C compiler (cc or gcc) installed, try


$ gcc file.c


This will create the binary, a.out, which you can execute by

$ ./a.out

Try using single quote around the element or escape the space.

Please paste the relevant code snippet. I'm guessing that you're using localtime. See localtime - perldoc.perl.org (http://perldoc.perl.org/functions/localtime.html) for changing the format.

See chown(1)

If you properly list the slave as a DNS server for the zones, I don't see a reason why it shouldn't work.

Try,


$ find /mount -type d | xargs du | sort -rn

malcomex999's solution is better and straight forward.

Try this,


$ awk '{ for(i=$NF;(NF-i)<NF;i--) { printf "%s%s",$(NF-i),FS } printf RS }' input_file


I haven't tested all the corner cases.

When you execute one.sh, you're executing it in a new shell. If you want to export it in current shell, then use '.' or source.


$ . ./one.sh

Instead of using multiple echo's, try using here document.


cat > resultofsample.sh <<EOF
#!/bin/bash
# codes
EOF

Did you type 'crtl + d' or did you press 'D' key while holding down the 'Ctrl' key ? It should be the latter.

Type CTRL+D to signal EOF.

$ echo $msg
Oct 21 15:00:49 covlsw01.nls.jlrint.com 2010 Oct 21 14:00:49 GMT +00:00 %SECURITY-1-PORTSHUTDOWN:Port 7/28 shutdown due to security violation
$ echo $msg | nawk -F '%' '{ split($1,a,"...

I read some really bad review on this one. But, you have to watch Rajini movies with a 'pinch of salt'.

Yeah, not many companies in India, encourage/allow work-from-home. Even though we get VPN and a laptop, we have to show up in office unless we have a genuine reason (an incident/change that kept you...

Use awk. I used nawk because I was on solaris.

$ var='hello'
$ nawk -v v=$var 'BEGIN{ print v }'
hello