Sponsored Content
Full Discussion: doubt in sed
Top Forums UNIX for Dummies Questions & Answers doubt in sed Post 80127 by vgersh99 on Wednesday 3rd of August 2005 11:34:04 AM
Old 08-03-2005
This has got nothing to do with 'sed', but rather with the surrounding shell expanding [double-quotes] / or not expanding [single-quotes] the "quoted" variable.

Do 'man ksh' and search for 'Quoting'
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

doubt it sed

Hello.. i want to use variable in sed.. like sed 's/ROOTMAILID/$variable/g' conf.test but its not working.. please help thanks in advance esham (2 Replies)
Discussion started by: esham
2 Replies

2. UNIX for Advanced & Expert Users

Doubt in SED command

PLEASE EXPLANIN ME... sed 's~\(.*\)\(<name>\)\(.*\)\(</name>\)\(.*\)~\2\3\4~' this is the format <start><name>123<\name><addr>BAC<\addr><loc>sfo<\loc></start> (1 Reply)
Discussion started by: gksenthilkumar
1 Replies

3. Shell Programming and Scripting

Basic SED doubt

Hi Friends!! I want to add a / at the end of a number. for example i have CQ65758 /, in this case i want to shift that backspace one space to the left so the my result becomes CQ65758/. How can i do that with sed. Thanks Adi (3 Replies)
Discussion started by: asirohi
3 Replies

4. Shell Programming and Scripting

A sed doubt - need explanation

Hi, The following command works fine for me, but I could not grasp the logic working behind of sed command, it's obscure to me :( :confused: echo "./20080916/core/audioex.amr" | sed "s%\(\)/%\1_%g" o/p: ./20080916_core_audioex.amr Could anyone please explain to me in detail, that how... (6 Replies)
Discussion started by: royalibrahim
6 Replies

5. Shell Programming and Scripting

sed command doubt

i have input files like this SFE_DOC_DATE (SFE_DOC_DATE:UniChar.:): "04/18/20" SFE_PSTNG_DATE (SFE_PSTNG_DATE:UniChar.:): "04/18/20" SFE_CREATEDON (SFE_CREATEDON:UniChar.:): "05/31/20" SFE_CLEAR_DATE (SFE_CLEAR_DATE:UniChar.:): "(NULL)" SFE_CLR_DOC_NO... (3 Replies)
Discussion started by: Gopal_Engg
3 Replies

6. Shell Programming and Scripting

sed doubt...

Hi, i need find and replace a sting with a new variable having value as spaces in between. Eg: set a = "i am variable" set b = "i am second" sed -e 's/find_string/'$a'/g' -e 's/find2_str/'$b'/g' input_file here it is giving error... How to get an varaible, which is... (6 Replies)
Discussion started by: vasanth.vadalur
6 Replies

7. Shell Programming and Scripting

sed doubt in extracting

Hi, Can anyone help me in understanding how the below code works? echo "texxt" | sed 's///' gives output exxt, ideally it should give xxt. as this should remove the chars which is not x. echo 'x_a_b_a_c_a_d' | sed 's/.*\(a\)/\1/' gives output as a_d, which should be 'a' as it's the only... (2 Replies)
Discussion started by: royalibrahim
2 Replies

8. UNIX for Dummies Questions & Answers

sed basic doubt

Hi , what is the equivalent of below awk in sed. awk '$1=="ABC"&&$2=="XYZ" {print $0}' infile Thanks, Shruthi (6 Replies)
Discussion started by: shruthidwh
6 Replies

9. Shell Programming and Scripting

sed q predicate doubt

Hi, Could anyone please explain me what the following command does? sed -ne "/\"$var\"/{=;q}" file (1 Reply)
Discussion started by: royalibrahim
1 Replies

10. UNIX for Dummies Questions & Answers

Doubt in sed

Hi All Can some one explain what does the given two sed commands do :confused: sed "s/\'/\\\'/g" | sed 's/\"/\\\"/g' Please find the sample code i used to find out what this is doing , but it has confused me more :wall: $ cat sri1.txt \ ' " $ sed 's/\"/\\\"/g' sri1.txt \ '... (5 Replies)
Discussion started by: Sri3001
5 Replies
UPSLOG(8)							    NUT Manual								 UPSLOG(8)

NAME
upslog - UPS status logger SYNOPSIS
upslog -h upslog [OPTIONS] DESCRIPTION
upslog is a daemon that will poll a UPS at periodic intervals, fetch the variables that interest you, format them, and write them to a file. The default format string includes variables that are supported by many common UPS models. See the description below to make your own. OPTIONS
-h Display the help message. -f format Monitor the UPS using this format string. Be sure to enclose format in quotes so your shell doesn't split it up. Valid escapes within this string are: %% Insert a single "%" %TIME format% Insert the time with strftime formatting %ETIME% Insert the number of seconds, ala time_t. This is now a 10 digit number. %HOST% insert the local hostname %UPSHOST% insert the host of the UPS being monitored %PID% insert the pid of upslog %VAR varname% insert the value of variable varname The default format string is: %TIME @Y@m@d @H@M@S% %VAR battery.charge% %VAR input.voltage% %VAR ups.load% [%VAR ups.status%] %VAR ups.temperature% %VAR input.frequency% -i interval Wait this many seconds between polls. This defaults to 30 seconds. If you require tighter timing, you should write your own logger using the upsclient(3) library. -l logfile Store the results in this file. You can use "-" for stdout, but upslog will remain in the foreground. -s ups Monitor this UPS. The format for this option is upsname[@hostname[:port]]. The default hostname is "localhost". -u username If started as root, upsmon will setuid(2) to the user id associated with username for security. If username is not defined, it will use the value that was compiled into the program. This defaults to "nobody", which is less than ideal. SERVICE DELAYS
The interval value is merely the number given to sleep(3) after running through the format string. Therefore, a query will actually take slightly longer than the interval, depending on the speed of your system. LOG ROTATION
upslog writes its PID to upslog.pid, and will reopen the log file if you send it a SIGHUP. This allows it to keep running when the log is rotated by an external program. SEE ALSO
Server: upsd(8) Clients: upsc(8), upscmd(8), upsrw(8), upsmon(8) Internet resources: The NUT (Network UPS Tools) home page: http://www.networkupstools.org/ Network UPS Tools 05/21/2012 UPSLOG(8)
All times are GMT -4. The time now is 04:20 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy