Tagged Questions

-1
votes
2answers
53 views

Replace all numbers following a specific string with another number using sed or awk

I have tried several things but got no luck. I have an input file that has a lot of fields like this one weight=0.123456 mixed with other fields. I want to multiply all such weights by a factor, say ...
1
vote
2answers
67 views

Finding folders only

My harddrive is in a mess, so I decided to do a cleanup. As a part of this, I want to merge all folders containing music into one. What I want to do is, look for any *.mp3's and *.aac's on my drive ...
0
votes
1answer
78 views

Bash: Grep regular expression failing to work

When using grep like so: ps aux | grep 'processname' | awk '{print $2}' The PIDs of processes withprocessname is returned. When using this: ps aux | grep '^processname' | awk '{print $2}' I'm ...
2
votes
2answers
70 views

Conditional spaces in a regular expression?

Using grep, how would I do this in one command line? I have this so far grep '\$[0-9][0-9]\.[0-9][0-9]' money.txt with various strings in the text file, but I'm having issues satisfying some of my ...
2
votes
5answers
202 views

Getting regex to match a filename

I have a script that lists a bunch of files that match a certain criteria. It outputs filenames only and there is a bunch of text that is unnecessary. An example string is: ...
1
vote
2answers
50 views

Trying to get `$FOO =~ bar|baz` to work in Bash and Zsh

I'm trying to get a simple if statement working in both Zsh and Bash but I can't find something to work with both. # this works with Zsh if [[ "$TERM_PROGRAM" =~ iTerm\|Apple_Terminal ]]; then echo ...
2
votes
2answers
141 views

Bash RegEx on OSX Vs Linux (oddities)

This is about Bash development and coding of portable Bash scripts that use RegEx. Using Bash RegEx, on a Mac, I can do this: coconut-mac$ a='bananacoconutman'; [[ "$a" =~ banana(.*?)man ]] ...
3
votes
2answers
328 views

Removing files matching a numeric range regular expression

I have a folder which has many files. Some of the data files are labelled 1, 2, 3, ..., 300 I want to remove these data files using the terminal. How do I do this? I want to do something like rm ...
1
vote
6answers
484 views

UNIX “find” command, match literal “dot”

I need files ending with ".pdf" or ".png"; here's my attempt: find /Users/robottinosino/Desktop/_PublishMe_ -type f -regex '.*[pdf|png]' this incorrectly includes files ending with "Apdf", "Zpdf", ...
2
votes
1answer
390 views

Regex for “or” of multiple words in grep

[Computer]$ grep "foo|bar" filename I understand the above command should return each line in filename where there exits "foo" or "bar". The man pages confirms | as the Regex or symbol and the code ...
0
votes
2answers
272 views

Match a line until a # ,but without the #, when parsing a file with a regex

I want to parse my sources.list to extract the list of repositories. I have: ## Some comment deb http://some.vendor.com/ubuntu precise stable deb-src http://some.vendor.com/ubuntu precise stable deb ...
8
votes
3answers
726 views

Substitution in text file **without** regular expressions

I need to substitute some text inside a text file with a replacement. Usually I would do something like sed -i 's/text/replacement/g' path/to/the/file The problem is that both text and replacement ...
1
vote
2answers
138 views

Extract URLS from code statements in JS files

All, I want to extract all URLS mentioned in code statements in all js files in a folder. For e.g. if a js file contains this piece of code: var myURL="http://yahoo.com/signup" //var ...
1
vote
3answers
2k views

How to ignore certain filenames using “find”?

One of my favorite BASH commands is: find . -name '*.*' -exec grep 'SearchString' {} /dev/null \; which searches the contents of all of the files at and below the current directory for the ...
1
vote
3answers
1k views

Delete files with regular expression

I Tried to delete files that starts with A and ends with 2 numbers but It doesn't do a thing. What I tried: rm ^A*[0..9]2$ Where am I wrong?
0
votes
1answer
281 views

How to insert thousand separator with `sed`?

I want to insert thousand separator into a number sequence with sed and this ugly RE sed -e :a -e 's/\(.*[0-9]\)\(\([0-9]\{3\}\)\(,[0-9]\{3\}\)*\(\.[0-9]*\)\)/\1,\2/;ta' [filename]. Is there a more ...
2
votes
3answers
1k views

Remove all files containing a pattern

Suppose I have a directory with files and subdirectories underneath it. Some of the files contain a pattern "^File:" in their contents. Is there some way I can use grep and a bash command to remove ...
0
votes
1answer
61 views

Searching for *.graphml files with the find utility

I am trying to find all my GRAPHML files under the current directory in bash. So I ran the following command: find . -name *.graphml And I get the error message: find: paths must precede ...
3
votes
4answers
2k views

Newlines in sed on Mac OS X

I find that \n doesn't work in sed under Mac OS X. Specifically, say I want to break the words separated by a single space into lines: # input foo bar I use, echo "foo bar" | sed 's/ /\n/' But ...
4
votes
2answers
1k views

How to rename all files and directories in current folder?

I have a directory structure like this: ./ whatever/ foos_whatever.ext something/ foo/ 1.ext 2.ext another/ foo.ext I want to rename all files and directories that ...
0
votes
1answer
110 views

Unix find behavior with spaced phrases between wildcards? [closed]

I am using a find command like find . -name "*<phrase>*.ext" This command works fine, when phrase has no spaces. However, if I try something like find . -name "*A phrase in the file ...
1
vote
2answers
373 views

Finding files in linux based on regex, with multiple alternatives

Let's say I have a list of strings. I want to find files with filenames starting with these string. Example, Strings: filename.could.start.with.this.restoffilename ...
2
votes
2answers
1k views

How to get list of files that don't match patterns in bash?

I have a file with joker character patterns: ./include/* ./src/* etc. From the current directory I would like to recursively get the list of files that do not match these patterns.
6
votes
7answers
3k views

How do I copy file named starting with a dot?

I am trying to copy all files under directory A to directory B. All files under directory A are starting with dot, for example: A/.a A/.b A/.c which I found if I use: cp A/* B, always get error: ...
0
votes
2answers
497 views

BASH history manipulation: search replace

There is a really handy parameter/variable expansion feature in BASH that I don't see for history. I've checked man pages for history and for BASH itself. Not there ...maybe I missed it. Example: I ...
0
votes
1answer
59 views

How to show regexp

I want to show what stands behind a regexp, for example, I want to print all chars covered by [A-z] in the bash.
3
votes
2answers
3k views

“ls” or regex is case insensitive?

In bash, I tried ls [a-z]* and expected to list all the files with filename starts with small case alphabet. But why the files with name starts with big case alphabet are also shown? >ls ...
1
vote
2answers
324 views

cut text from each line in a txt file

i have a text file where each line looks like this: <img border=0 width=555 height=555 src=http://websitelinkimagelinkhere> each line is like that for like 1500 lines, i want to sort of ...
1
vote
2answers
252 views

How to show regexp parts of text

I've lots of files which lines looks like lotsofblah/XY##_####_morefoo where # is a number. Now i want to show only the parts YZ##_#### in the bash, each in a new line of course.
2
votes
3answers
339 views

How to use “rm” to remove files with a “:” in them?

I am using Ubuntu 10.04, and I have a directory with a bunch of files. We changed the naming scheme of the files a while ago, and now I want to delete all the old ones. New Name scheme: ...
4
votes
4answers
330 views

deleting folders in linux bash

i'm trying to delete in gnu/linux all folders inside another folder that start with a "." (dot), for that i'm using the find utility, this is what i have: find . -iname ^\..* -exec rm -rf {} \; but ...
0
votes
1answer
3k views

Hot to remove special chars from filenames and rename them in a directory?

This is what I have so far. #!/bin/bash pushd DirectoryName for file in *.csv; do #echo $file filename=${file%.*} file_clean=${filename//[ ()$+&\.\-\'\,]/_} final= ...
2
votes
2answers
8k views

How to delete files on the command line with regular expressions?

Lets say I have 20 files named FOOXX, where XX is the number of the file, eg 01, 02 etc. At the moment, if I want to delete all files lower than the number 10, this is easy and I just use a wildcard, ...