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  • Merge two text files at a specific location, sed or awk.

    - by S1syphus
    I have two text files, I want to place a text in the middle of another, I did some research and found information about adding single strings: I have a comment in the second text file called STUFFGOESHERE, so I tried: sed '/^STUFFGOESHERE/a file1.txt' file2.txt sed: 1: "/^STUFFGOESHERE/a long.txt": command a expects \ followed by text So I tried something different, trying to place the contents of the text based on a given line, but no luck. Any ideas?

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  • Fastest way to sort files

    - by Werner
    Hi, I have a huge text file with lines like: -568.563626 159 33 -1109.660591 -1231.295129 4.381508 -541.181308 159 28 -1019.279615 -1059.115975 4.632301 -535.370812 155 29 -1033.071786 -1152.907805 4.420473 -533.547101 157 28 -1046.218277 -1063.389677 4.423696 What I want is to sort the file, depending on the 5th column, so I would get -568.563626 159 33 -1109.660591 -1231.295129 4.381508 -535.370812 155 29 -1033.071786 -1152.907805 4.420473 -533.547101 157 28 -1046.218277 -1063.389677 4.423696 -541.181308 159 28 -1019.279615 -1059.115975 4.632301 For this I use: for i in file.txt ; do sort -k5n $i ; done I wonder if this is the fastest or more efficient way Thanks

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  • how to read rows?

    - by lego69
    I'm trying to read first row from the file > source ./rank file using this script set line = ($<) but when I enter echo $line I receive nothing, how can I change it? thanks in advance

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  • Is there a way to jail in Javascript, so that the DOM isn't visible

    - by TiansHUo
    I would really like to provide the user some scripting capabilities, while not giving it access to the more powerful features, like altering the DOM. That is, all input/output is tunneled thru a given interface. Like a kind of restricted javacsript. Example: If the interface is checkanswer(func) this are allowed: checkanswer( function (x,y)={ return x+y; } but these are not allowed: alert(1) document.write("hello world") eval("alert()")

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  • How do I can linux flock command to prevent another root process deleting a file?

    - by Danmaxis
    Hello there, I would like to prevent one of my root process from deleting a certaing file. So I came across the flock command, it seems to fit my need, but I didnt get its sintax. If I only indicate a shared lock, it doesnt work: flock -s "./file.xml" If I add a timeout parameter, it still doesnt work flock -s -w5 "./file.xml" It seems that way, it fits in flock [-sxun][-w #] fd# way. (What is this fd# parameter?) So, I tried the flock [-sxon][-w #] file [-c] command Using flock -s -w5 "./file.xml" -c "tail -3 ./file.xml" and it worked, tail command at ./file.xml was executed. But I would like to know, does the lock end after the command or does it last 5 seconds after the end of the command execution? My main question is, how can I prevent another root process deleting a file in linux?

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  • Is there a way to find a specific file and then change into the directory containing it in one go?

    - by bergyman
    I'm looking for a way to find what I know will be a unique file, and then change into the directory containing that file. Something along the lines of: find . -name 'Subscription.java' | xargs cd Or: find . -name 'Subscription.java' -exec cd {} \; I know this won't work because it's both trying to cd supplying the entire absolute path, which contains the file, and also because xargs can't do any built in shell commands...but you get the point of what I want to accomplish.

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  • remsh rsh error redirect problem

    - by soField
    using following command on hp-ux remsh opera -l myuser crontab -l /opt1/exp_opera_crontab 2/opt/a.log and when i echo $? i get 0 because its executing crontab -l on remote machine but i dont have opt1 directory so export wont be copied to my local machine in /opt1/exp_opera_crontab i dont get any error about this when i run this remsh or rsh command is there any way to identify both of remote and local machine related errors and redirecting them into my local machine ?

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  • Linux script to kill process listening on a particular port

    - by Evgeny
    I have a process that listens on a TCP port (?0003). From time to time it crashes - badly. It stops working, but continues hogging the port for some time, so I can't even restart it. I'm looking to automate this. What I do right now is: netstat -ntlp |grep -P "\*\:\d0003" To see what the PID is and then: kill -9 <pid> Does anyone have a script (or EXE for that matter) that would link the two steps together, ie. parse the PID from the first command and pass it to the second?

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  • shell_exec syntax error. running in terminal directly is ok

    - by Alex
    Having this command: $command = "diff -bBdH --ignore-all-space <(echo 'hi') <(echo 'hi1')"; echo $command; $result = shell_exec($command); On the screen I see: sh: 1: Syntax error: "(" unexpected diff -bBdH --ignore-all-space <(echo 'hi') <(echo 'hi1') If I copy-paste the second line from the console output into the terminal, the result would be correct. (Reproduced on another machine too). I'm missing something dead simple here and can't see what it is. besides, why is my output reversed? I'm clearly echoing the command before executing it, thus the syntax error of the shell should appear after the shell_exec

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  • Inotifywait doesn't run command

    - by Marius Miliunas
    I have a basic inotifywait script called watch.sh and a few files ending in .styl in the same directory. Here's the script, that catches the changes, but doesn't execute the code within the do/done I init it like sh watch.sh and here's the script #!/bin/sh while inotifywait -m -o ./log.txt -e modify ./*.styl; do stylus -c %f done I tried having echo "hi" within the exec portion but nothing executes

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  • join 3 files by first Column with awk ?

    - by noinflection
    i have three similar files, they are all like this: File A ID1 Value1a ID2 Value2a . . . IDN Value2n and i want an output like this Output ID1 Value1a Value1b Value1c ID2 Value2a Value2b Value2c ..... IDN ValueNa ValueNb ValueNc Looking to the first line, i want value1A to be the value of id1 in fileA, value1B the value of id1 in fileB, and so on which each field and each line. I thougth it like a sql join. I've tried several things but none of them where even close.

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  • Where can I find a web-project "security checklist?"

    - by iaagty
    I'm looking for a complete list of security guidelines for programming and deploying PHP web sites and applications on an Apache (Linux) server. Basically, a "security check list" to run through before finishing a project. I.e., Cross Site Scripting Cross Site Request Forgery Sanitize form data that goes into database Disable register globals and error reporting in custom php.ini Upload files below web root ...(the list goes on) I did some searching on the internet and in this forum, but couldn't find a comprehensive, succinct, and complete list of guidelines. Thanks in advance.

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  • Using /dev/tcp instead of wget

    - by User1
    Why does this work: exec 3</dev/tcp/www.google.com/80 echo -e "GET / HTTP/1.1\n\n"&3 cat <&3 And this fail: echo -e "GET / HTTP/1.1\n\n" /dev/tcp/www.google.com/80 cat </dev/tcp/www.google.com/80 Is there a way to do it in one-line w/o using wget, curl, or some other library?

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  • Counting unique values in a column with a shell script

    - by Lilly Tooner
    Hello. I have a tab delimited file with 5 columns and need to retrieve a count of just the number of unique lines from column 2. I would normally do this with Perl/Python but I am forced to use the shell for this one. I have successfully in the past used *nix uniq function piped to wc but it looks like I am going to have to use awk in here. Any advice would be greatly appreciated. (I have asked a similar question previously about column checks using awk but this is a little different and I wanted to separate it so if someone in the future has this question this will be here) Many many thanks! Lilly

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  • xargs command works on ubuntu, but not mac

    - by Corey Hart
    I have the following line of code that I use to update my personal date variable in my projects to todays current date. This line works in Ubuntu's terminal, but the Mac terminal seems to be far behind. Unfortunately, I copied this snippet from some site, so I'm not sure how it exactly works. Suggestions? grep -ilr --exclude=revar.sh --exclude=README.md "[DATE]" * | grep -v .git | xargs -i@ sed -i "s/\[DATE\]/${today}/g" @

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  • Selectively parsing log files using Java

    - by GPX
    I have to parse a big bunch of log files, which are in the following format. SOME SQL STATEMENT/QUERY DB20000I The SQL command completed successfully. SOME OTHER SQL STATEMENT/QUERY DB21034E The command was processed as an SQL statement because it was not a valid Command Line Processor command. EDIT 1: The first 3 lines (including a blank line) indicate an SQL statement executed successfully, while the next three show the statement and the exception it caused. darioo's reply below, suggesting the use of grep instead of Java, works beautifully for a single line SQL statement. EDIT 2: However, the SQL statement/query might not be a single line, necessarily. Sometimes it is a big CREATE PROCEDURE...END PROCEDURE block. Can this problem be overcome using only Unix commands too? Now I need to parse through the entire log file and pick all occurrences of the pair of (SQL statement + error) and write them in a separate file. Please show me how to do this!

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  • List and Remove directories in an archive

    - by Tim
    I wonder how to list the content and remove some directories in an archive file? For example, I have an archive file data.tar. I would like to list its content without extracting it. I also would like to remove some directories inside it matching "*/count1000" Thanks and regards!

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  • php error message "Notice: Undefined index: aid"

    - by iaagty
    I'm looking for a complete list of security guidelines for programming and deploying PHP web sites and applications on an Apache (Linux) server. Basically, a "security check list" to run through before finishing a project. I.e., Cross Site Scripting Cross Site Request Forgery Sanitize form data that goes into database Disable register globals and error reporting in custom php.ini Upload files below web root ...(the list goes on) I did some searching on the internet and in this forum, but couldn't find a comprehensive, succinct, and complete list of guidelines. Thanks in advance.

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  • how can I split up this string

    - by lacrosse1991
    I am currently trying to sanitize some log files so they are in an easier format to read, and have been trying to use the gnu cut command, which works fairly well, although I cannot really think of a good way to remove the [INFO] part of the string logs/logs/server_1283258036.log:2010-08-31 23:06:51 [INFO] <NateMar> where?! logs/logs/server_1281904775.log:2010-08-15 22:59:53 [INFO] <BoonTheMoon> §b<BoonTheMoon>§ohhhhhh I would ultimately want to get the strings down to something that resembles the following 2010-08-31 23:06:51 <NateMar> where?! 2010-08-15 22:59:53 <BoonTheMoon> ohhhhhh how should I go about doing this? Have thought about using awk, although Im having a difficult time getting a grip on how that would work, so not sure how to set up something to do that, any help would be greatly appreciated, thanks!

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  • move file from one location to another in putty

    - by dexter
    i have created folder on my server (ie finesse)- 'home' in which i have several perl(.pl) files as tt.pl, re.pl etc. now i have created new folder in 'home' folder called 'perl' and want to move tt.pl and re.pl in perl folder is there any command to do so (like cut-paste in windows)? note: i am using putty 0.60 on windows xp

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