Commands using file sorted by votes

Commands using file (166)

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Cat files in a directory; for loop command

Original submitted version would break if any filenames had whitespaces in them. The command is a Bad Idea anyhow, because you will end up `cat`ing a binary or something else specacularly bad.
This is sample output - yours may be different.
-2

for file in ./*; do cat "$file"; sleep 0.3

DopeGhoti · 2011-11-28 20:10:57 3
Write in a text file the contents of all the zip files in a directory.

It can be used to create an index of a backup directory or to find some file.
This is sample output - yours may be different.
-2

for file in *.zip; do unzip -l "$file" >> archiveindex.txt ; done;

chon8a · 2013-05-02 01:43:26 7
Reset the last modified time for each file in a git repo to its last commit time
This is sample output - yours may be different.
-2

for file in $( git ls-files ); do echo $file; touch -t $(git --no-pager log --date=local -1 --format="%ct" $file | php -r 'echo @date( "YmdHi.s", trim( file_get_contents( "php://stdin" ) ) );') $file; done

westonruter · 2015-07-01 00:28:06 13
stores the number of lines of "file" in a variable to use in a loop
This is sample output - yours may be different.
-3

count=`wc -l file | cut -d ' ' -f1`

vmplacco · 2009-02-25 21:21:47 5
convert all WAVs from any format (MS ADPCM) to PCM

I needed this for wine.
This is sample output - yours may be different.
-3

for file in $(find -type f -iname "*wav"); do mv $file "$file"_orig.WAV; mplayer -ao pcm "$file"_orig.WAV -ao pcm:file=$file; done

oernii · 2009-04-06 21:36:04 6
determine if a shared library is compiled as 32bit or 64bit

file displays a files type the -L flag means follow sym-links (as libraries are often sym-linked to another this behavior is likely preferred) more complex behavior (*two* grep commands!) could be used to determine if the file is or is not a shared library.
This is sample output - yours may be different.
-3

file -L <library> | grep -q '64-bit' && echo 'library is 64 bit' || echo 'library is 32 bit'

infinull · 2010-03-07 06:31:35 3
Recursive and alphabetical orderly cp
This is sample output - yours may be different.
-3

for file in `find *| sort -n | sed 's% %?%g'`; do echo "${file//?/ }"; cp --parents "${file//?/ }" /destinity_folder/ ;done

juanmi · 2011-05-23 16:34:08 7
Remove blank lines from a file and save output to new file
This is sample output - yours may be different.
-4

sed '/^$/d' file >newfile

haplo · 2009-09-24 19:22:49 5
download file1 file2 file3 file4 .... file 100

With counter format [001, 002, ..., 999] , nice with pictures or wallpapers collections.
This is sample output - yours may be different.
-4

for file in $(seq -f '%03.f' 1 $TOTAL ); do echo "($file/$TOTAL)"; curl -f -O http://domain.com/Name_$file.ext; done

nordri · 2010-01-12 15:23:44 6
a find and replace within text-based files, for batch text replacement, not using perl
This is sample output - yours may be different.
-5

for file in `find . -iname "FILENAME"`; do cat $file | sed "s/SEARCH_STRING/REPLACE_STRING/" > $file.tmp; mv $file.tmp $file; done

unixmonkey6754 · 2010-02-24 13:46:29 3
Numerate files, rename files in a directory by incremental number

Renames files in a directory to incremental numbers, following alphabetic order. The command does not maintain extensions.
This is sample output - yours may be different.
-5

declare -i i; i=0; for file in *; do i=`expr $i+1`; mv "$file" $i; done;

themiurgo · 2010-08-26 12:24:38 5
Numerate files, rename files in a directory by incremental number
This is sample output - yours may be different.
-5

declare -i i=0 ; for file in * ; do i=$[$i+1] ; mv "$file" $i; done

pepin · 2010-08-26 12:40:58 3
list with full path
This is sample output - yours may be different.
-6

for file in *; do echo $PWD/$file; done

Velenux · 2011-12-16 13:12:00 4
remove all dead symbolic links in a directory
This is sample output - yours may be different.
-8

for i in $(file * | grep broken | cut -d : -f 1); do rm $i; done

Znuff · 2010-11-02 16:10:42 10
list with full path

Also lists hidden files, current dir and topdir.
This is sample output - yours may be different.
-8

for file in * .*; do echo $PWD/$file; done

marek158 · 2011-12-16 13:42:07 3
Find broken symlinks
This is sample output - yours may be different.
-9

find . -type l | xargs file | grep broken

kineticrick · 2011-04-07 22:58:02 4
‹ First < 5 6 7

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load changes without logging in and out vim

src: daily vim blog

One line Perl Script to determine the largest file sizes on a Linux Server

This one line Perl script will display the smallest to the largest files sizes in all directories on a server.

Search for in which package the specified file is included.

give a binary the ability to open ports below 1024 as non root user

Binding a server to privileged port on Linux w/o running as root This is applicable to any service using privileged ports (< 1024), for instance to run a HTTP server on port 80 or a LDAP directory server on port 389 for example.

Get AWS temporary credentials ready to export based on a MFA virtual appliance

You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials

Set laptop display brightness

Run as root. Path may vary depending on laptop model and video card (this was tested on an Acer laptop with ATI HD3200 video). $ cat /proc/acpi/video/VGA/LCD/brightness to discover the possible values for your display.

list block devices

Shows all block devices in a tree with descruptions of what they are.

Start a command on only one CPU core

This is useful if you have a program which doesn't work well with multicore CPUs. With taskset you can set its CPU affinity to run on only one core.

Install pip with Proxy

Installs pip packages defining a proxy

Harder, Faster, Stronger SSH clients

We force IPv4, compress the stream, specify the cypher stream to be Blowfish. I suppose you could use aes256-ctr as well for cypher spec. I'm of course leaving out things like master control sessions and such as that may not be available on your shell although that would speed things up as well.

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Commands using file (166)

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