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Search found 490 results on 20 pages for 'awk'.

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• How to remove empty tables from a MySQL backup file.

  - by user280708

  I have multiple large MySQL backup files all from different DBs and having different schemas. I want to load the backups into our EDW but I don't want to load the empty tables. Right now I'm cutting out the empty tables using AWK on the backup files, but I'm wondering if there's a better way to do this. If anyone is interested, this is my AWK…

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• ash scripting: space-containing variable refuses to be grepped

  - by Luci Sandor

  I am trying to run the script listed at http://talk.maemo.org/showthread.php?t=70866&page=2 on its intended hardware, a Nokia Linux phone running BusyBox ash. The script receives the name of WiFi network as a parameter, and tries to connect the phone to it. I suspect the script works, but my SSID, BU (802.1x), has space and parentheses in…

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• grepping a substring from a grep result

  - by allentown

  Given a log file, I will usually do something like this: grep 'marker-1234' filter_log What is the difference in using '' or "" or nothing in the pattern? The above grep command will yield many thousands of lines; what I desire. Within those lines, There is usually one chunk of data I am after. Sometimes, I use awk to print out the…

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• How to search file for matching whole lines?

  - by WilliamKF

  I have a command which sends to stdout a series of numbers, each on a new line. I need to determine whether a particular number exists in the list. The match needs to be exact, not a subset. For example, a simple way to approach this that does not work would be to do: /run/command/outputing/numbers | grep -c <numberToSearch> …

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• How do I parse file paths separated by a space in a string?

  - by user1130637

  Background: I am working in Automator on a wrapper to a command line utility. I need a way to separate an arbitrary number of file paths delimited by a single space from a single string, so that I may remove all but the first file path to pass to the program. Example input string: /Users/bobby/diddy dum/ding.mp4 /Users/jimmy/gone…

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• joining text files with 600M+ lines

  - by dnkb

  I have two files huge.txt and small.txt. Huge has around 600M rows and it's 14Gigs, each line has four space separated words (tokens) and finally another space separated column with a number. Small has 150K rows with a size of ~3M, a space separated word and a number. Both Files are sorted using the sort command, with no extra…

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• Processing a tab delimited file with shell script processing

  - by Lilly Tooner

  Hello, normally I would use Python/Perl for this procedure but I find myself (for political reasons) having to pull this off using a bash shell. I have a large tab delimited file that contains six columns and the second column is integers. I need to shell script a solution that would verify that the file indeed is six columns…

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• search for a string , and add if it matches

  - by Sharat Chandra

  I have a file that has 2 columns as given below.... 101 6 102 23 103 45 109 36 101 42 108 21 102 24 109 67 and so on...... I want to write a script that adds the values from 2nd column if their corresponding first column matches for example add all 2nd column values if it's 1st column is 101 add all 2nd…

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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…

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• sed or grep or awk to match very very long lines

  - by yael

  more file param1=" 1,deerfntjefnerjfntrjgntrjnvgrvgrtbvggfrjbntr*rfr4fv*frfftrjgtrignmtignmtyightygjn 2,3,4,5,6,7,8, rfcmckmfdkckemdio8u548384omxc,mor0ckofcmineucfhcbdjcnedjcnywedpeodl40fcrcmkedmrikmckffmcrffmrfrifmtrifmrifvysdfn" need to match the content of $param1 in the file but its not work for example sed -n…

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• basics of using cut awk grep and sed...

  - by Samantha

  Hello there, I'm trying to extract the year from this output : sam@sam-laptop:~/shell$ date Mon Feb 8 21:57:00 CET 2010 sam@sam-laptop:~/shell$ date | cut -d' ' -f7 2010 sam@sam-laptop:~/shell$ date | awk '{print $6}' 2010 Are there any other ways to get the same result ? using maybe grep, sed etc ? Merci !

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• php script dies when it calls a bash script, maybe a problem of server configuration

  - by user347501

  Hi!!! I have some problems with a PHP script that calls a Bash script.... in the PHP script is uploaded a XML file, then the PHP script calls a Bash script that cut the file in portions (for example, is uploaded a XML file of 30,000 lines, so the Bash script cut the file in portions of 10,000 lines, so it will be 3 files…

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• Looking to reimplement build toolchain from bash/grep/sed/awk/(auto)make/configure to something more

  - by wash

  I currently maintain a few boxes that house a loosely related cornucopia of coding projects, databases and repositories (ranging from a homebrew *nix distro to my class notes), maintained by myself and a few equally pasty-skinned nerdy friends (all of said cornucopia is stored in SVN). The vast majority of our code is in…

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• parsing issue with comma separated csv file

  - by Andrei

  I am trying to extract 4th column from csv file (comma separated, and skipping first 2 header lines) using this command, awk 'NR <2 {next}{FS =","}{print $4}' filename.csv | more However, it doesn't work because the first column cantains comma, thus 4th column is not really 4th. Below is an example of a row: …

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• How to number the ls output in unix?

  - by Snehal

  I am trying to write a file with format - "id file_absolute_path" which basically lists down all the files recursively in a folder and give an identifier to each file listed like 1,2,3,4. I can get the absolute path of the files recursively using the following command: ls -d -1 $PWD/**/*/* However, I am unable…

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• reformat text in perl

  - by paul44

  I have a file of 1000 lines, each line in the format filename dd/mm/yyyy hh:mm:ss I want to convert it to read filename mmddhhmm.ss been attempting to do this in perl and awk - no success - would appreciate any help thanks

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• Swapping of columns in a file and remove duplicates

  - by LucaB

  Hi all i have a file like this: term1 term2 term3 term4 term2 term1 term5 term3 ..... ..... what i need to do is to remove duplicates in any order they appear, such as: term1 term2 and term2 term1 is a duplicate to me. It is a really long file, so I'm not sure what can be faster. Does anyone has an idea…

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• Determine stale data

  - by Andrei

  Say I have a file of this format 12:04:21 .3 12:10:21 1.3 12:13:21 1.4 12:14:21 1.3 ..and so on I want to find repeated numbers in the second column for, say, 10 consequent timestamps, thereby finding staleness. and I want to output the beginning and and end of the stale timestamp range Can someone…

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• search a string in a file as ignoring the lines beginning with #

  - by ephieste

  I want to find a string such as "qwertty=" in a file with "awk" or "grep" but I don't want to see the lines with #. Please see the example grep -ni "qwertty" /aaa/bbb 798:# * qwertty - enable/disable 1222:#qwertty=1 1223:qwertty=2 1224:#qwertty=3 I want to find the line 1223. What should be the search…

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• Delete lines containing a range pattern in 4rd columns

  - by Andrei

  In a file 4th column contains a floating point numbers dsfsd sdfsd sdfds 4.5 dfsdfsd I want to delete the entire line if the number between -0.1 and 0.1 (or some other range). Can sed or awk do that for me? thanks

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• How to replace new lines with tab characters

  - by benjamin button

  hi i have pattern like below hi hello hallo greetings salutations no more hello for you i am trying to replace all new lines with tab spaces using the following command sed -e "s_/\n_/\t_g" but its not working . could nybody pls help? i need the solution in sed /awk.

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• How do I delete the first line in a file?

  - by Soop

  I can't search for a particular string, since they're all very similar, but I'd like something simple to chop out the first 4 lines in a file. They're all variable length too. I've had a a think about perl, and it all seems harder than I thought, but I'd like to do it in Perl, AWK or a shell command if…

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• replace new lines with comas in shell

  - by mpapis

  I want to replace new lines in text with coma or space but do not change the last new line. I know of this question: How to replace new lines with tab characters - but it does produce an tab on end instead of new line. So far I have come with: awk 'NR>1{printf","} {printf $1} END{printf"\n"}' Is…

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• how to grep ip from ifconfig output

  - by Registered User

  Following is my ifconfig output eth0 Link encap:Ethernet UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0…

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• Year Month day from file name in shell script

  - by user3319390

  I hava file names like below adn_DF9D_20140515_0001.log adn_DF9D_20140515_0002.log adn_DF9D_20140515_0003.log adn_DF9D_20140515_0004.log adn_DF9D_20140515_0005.log adn_DF9D_20140515_0006.log adn_DF9D_20140515_0007.log i want get the year, Month, day from file name and create directories Ex: [[ ! -d…

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