printing lines to a file from a particular string Post: 302398441

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1. Shell Programming and Scripting

printing first n lines in a file without using head

i have to print first n lines of a file. how can i do that without using head command. for some reason i do not want to use Head. is there a way to get that result using awk or sed?. i an using this on korn shell for AIX Thanks..

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Printing the lines which proceeds the particular string

Hi, We are facing some issues while finding the particular string. Our file is: cat 1.txt Node Name(s) Preparation fragment Partition: Transformation instance: Transformation: Applied rows: Affected rows: Rejected rows: Throughput(Rows/Sec): Throughput(Bytes/Sec): Last...

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Counting no. of lines and printing it at the start of the file

Dear users, I need to count the number of lines in a simple text file and print the number on the first line of that same file. I know I can count the lines using wc -l file.txt this gives for example 100 file.txt I need the number 100 to be printed at the very top of file.txt...

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Printing 10 lines above and below the search string: help needed

Hi, The below code will search a particular string(say false in this case) and return me 10 lines above and below the search string in a file. " awk 'c-->0;$0~s{if(b)for(c=b+1;c>1;c--)print r;print("***********************************");print;c=a;}b{r=$ 0}' b=10 a=10 s="false" " ...

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replace (sed?) a single line/string in file with multiple lines (string) from another file??

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Printing all lines before a specific string and a custom message 2 lines after

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Trouble printing multiple lines to a new file

Hi, I'm trying to auto generate some php files with a default preamble at the top which is a block comment. The problem is that my output has no new lines and it looks like the output from "ls" is being printed after everyline This is my code #!/bin/bash read -d '' pre_amble...

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Printing the lines that appear in an other file, and the three lines after them

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Printing the lines of the string with highest value

Please help . The script need to first grep for all lines with "C:" as it contains a value Here the value is 0 1,00: This , is a good script c:0 and then give output of the lines with top 3 highest value for c: 1,00: This , is a nice script c:9999 1,00: This , is a...

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Help in printing n number of lines if a search string matches in a file

Hi I have below script which is used to grep specific errors and if error string matches send an email alert. Script is working fine , however , i wish to print next 10 lines of the string match to get the details of error in the email alert Current code:- #!/bin/bash tail -Fn0 --retry...

LEARN ABOUT OSX

syscallbypid.d

syscallbypid.d(1m)						   USER COMMANDS						syscallbypid.d(1m)

NAME

       syscallbypid.d - syscalls by process ID. Uses DTrace.

SYNOPSIS

       syscallbypid.d

DESCRIPTION

       This  reports  the  number  of  each  type of system call made by PID.  This is useful to identify which process is causing the most system
       calls.

       This is based on a script from DExplorer.

       Since this uses DTrace, only users with root privileges can run this command.

EXAMPLES

       This samples until Ctrl-C is hit.
	      # syscallbypid.d

FIELDS

       PID    process ID

       CMD    process name

       SYSCALL
	      system call name

       COUNT  number of system calls made in this sample

DOCUMENTATION

       See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver-
       bose descriptions explaining the output.

EXIT

       syscallbypid.d will sample until Ctrl-C is hit.

AUTHOR

       Brendan Gregg [Sydney, Australia]

SEE ALSO

       procsystime(1M), dtrace(1M), truss(1)

version 1.00							   Jun 28, 2005 						syscallbypid.d(1m)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

printing first n lines in a file without using head

Discussion started by: dareman123

2. Shell Programming and Scripting

Printing the lines which proceeds the particular string

Discussion started by: Amey Joshi

3. UNIX for Dummies Questions & Answers

Counting no. of lines and printing it at the start of the file

Discussion started by: jenjen_mt

4. Shell Programming and Scripting

Printing 10 lines above and below the search string: help needed

Discussion started by: vimalm22