Use this tag for questions about file management and operations on files.

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0
votes
1answer
12 views

Have to transform some bunch of csv in req format and store it in some other location with same name

I am having some input CSV files INPUT_FILE: A_B_C_NFM001_20150729.csv A_B_C_NFM002_20150729.csv A_B_C_NFM003_20150730.csv I want output file also with the same name as input after performing below ...
0
votes
4answers
58 views

piping commands not working as expected I need explanation

I am trying to do the below touch ~/scratches/scr6.txt | cat ~/scr.txt > ~/scratches/scr6.txt | cat /dev/null > ~/scr.txt I don't know why scr6.txt is always empty, however doing the below ...
0
votes
2answers
35 views

Rename specific level of sub folders

I have list of sub folders inside a parent folder as follow: Parent folder folder1 foldera folder2 folderb folder3 folderc I want to rename the subfolders only in ...
2
votes
4answers
3k views

'chmod g+s' command

Hello I want to understand the role of the chmod g+s command in Unix. I also would like to know what it does in this particular context: cd /home/canard; touch un; chgrp canard .; chmod g+s .; touch ...
0
votes
0answers
10 views

Failed to change last modified date of the file after do some edit in /var/www

on ubuntu server (14.04) I have a virtual host which is in /var/www and my linux user is group of www-data. But I noticed that, if I change something on a file in /var/www last modified date does not ...
35
votes
8answers
57k views

How can I get the size of a file in a bash script?

How can I get the size of a file in a bash script? How do I assign this to a bash variable so I can use it later?
0
votes
1answer
30 views

find and replace with the value in another file

I have two files with different formats with columns tab spaced. I have to compare the columns column1, column2 of file1 with file2. If they matches, I need to replace the value in column6 of file1 ...
1
vote
0answers
6 views

Get “recent files” in global file manager (Dolphin?)

I just switched to OpenSUSE (KDE) from my Fedora 20 KDE setup,and I find myself greatly missing a feature that was a default in Fedora: a "Recently Used" option in the file manager when saving and ...
0
votes
3answers
44 views

How do I create a directory for every file in a parent directory

I have parent folder and inside this folder I have 4 files ParentFolder File1.txt File2.txt File3.txt File4.txt I wanted to create subfolders inside the parent folder and ...
15
votes
3answers
2k views

How do I “cat and follow” a file?

A file is being sequentially downloaded by wget. If I start unpacking it with cat myfile.tar.bz2 | tar -xj, it may unpack correctly or fail with "Unexpected EOF", depending on what is faster. How to ...
-3
votes
0answers
21 views

File layer (want to get requested filename) [on hold]

Imagine that there is running application that wants to read a file from working directory. When it happens I want to get a name of requested file and check if it is existing in specified directory, ...
1
vote
4answers
513 views

Fast incremental searching of files from shell

I like the command-t script in vim editor that is able to intelligently and incrementally search for files. Is there some similar program that is able to search from shell? It would be great if it ...
2
votes
1answer
45 views

How to create gcov files for a project in a different dir?

I want to analyze code coverage datas. I want to create gcov files from OpenSSL (and from other projects), but I can only create them in the same directory of the project, and only for the files in ...
0
votes
3answers
61 views

Get recursive file count (like `du`, but number of files instead of size) [duplicate]

Since I'm having performance problems with rsnapshot, I'd like to identify directories with great number of files recursively. I think the problem is not the size of the files, but the file count in ...
1
vote
2answers
14 views

Getting a list of files modified after an apt-get upgrade or intstall?

I would like to run AIDE or tripwire to make sure executables/configuration files/... do not get modified by malware. Or at least notify me if they do get modified. I would like to get a list of ...
4
votes
4answers
248 views

Remove a directory from inside using the command line interface [duplicate]

Imaging the next simple file structure within the /home/user/ directory: /home/user |--dir0 |--dir1 |--file1 My current directory is 'dir1' and I remove the ...
2
votes
3answers
86 views

Monitor processes trying to access non-existent file or directory

We're moving websites from one server configuration to a new configuration and the websites will live in different paths than previously. We're planning to diligently go through and replace old paths ...
0
votes
1answer
30 views

Scanning user directories for specified file [closed]

i want to find all files in /etc/passwd called cat.sh and then outputs the timestamp and * of entries. I was thinking of using grep -l "cat.sh" * | wc -l
1
vote
0answers
20 views

Can I make cross-computer sharing compatible with tinfoil-hat security (password managers, email, etc.)

Preface: I realize the following is asking for tinfoil-hat type security, but I'm really curious for answers to my questions -- not suggestions to enable two-factor logons on gmail, etc. and call it a ...
10
votes
4answers
3k views

How to run a command when a directory's contents are updated?

There is a directory A whose contents are changed frequently by other people. I have made a personal directory B where I keep all the files that have ever been in A. Currently I just occasionally ...
95
votes
3answers
195k views

How can I replace a string in a file(s)?

Replacing strings in files based on certain search criteria is a very common task. How can I replace string foo with bar in all files in the current directory? do the same recursively for sub ...
2
votes
2answers
311 views

unix file is corrupted [closed]

I discovered that one of my logs consumes lots of space which comes from a running process. I wanted to clean this file, so I can run logadm to rotate it after. but I don't know how # ...
6
votes
4answers
565 views

How to print the name of missing files in a folder?

I have 2000+ files in a folder, but there are few files missing from the folder. Name of the files are like GLDAS_NOAH025SUBP_3H.A2003001.0000.001.2015210044609.pss.grb ...
0
votes
0answers
12 views

What permissions apply if specific user's permission on file or directory differ from user's group to which this user belong to in Linux? [duplicate]

Case 1: User has "rwx" permissions to certain file or directory. But has no permissions "---" in group it belongs to. Question: who wins - Does user have "rwx" or "---", effectively (not what's ...
-6
votes
1answer
52 views

Delete Huge file in linux

I would like to delete a large file in my server. It's very large nearly more than TB's. What is the best way to delete that huge file ???
4
votes
1answer
128 views

Unexplained files found in home folder

For background information, I'm running openSUSE 13.2 and KDE 5. Today I found a number of unexplained files and folders in my home folder which state they've been edited 3 days ago. I do not ...
1
vote
2answers
40 views

How do I find/list all files on filesystem with a certain SELinux “fcontext”

I'm having trouble finding information on what command, presumably from setools, I should use to find all the files on my filesystem that are labeled by SELinux with a certain file-context (fcontext). ...
0
votes
0answers
16 views

Is there a way to change file/folder ownership on a server in Ubuntu/Kali-Linux? [migrated]

I accidentally changed file ownership of a folder in Windows 7 and now nobody can edit, copy, view, move it, etc. Not even the administrator account account can change it back. I tried icacls and ...
0
votes
1answer
52 views

find files in a folder

I'm trying to make a FIFO script that keeps deleting files when disk usages reaches a limit. I have used the find command so that number of files wont be a limit to run the script. But I get an error ...
39
votes
10answers
63k views

How do I loop through only directories in bash?

I have a folder with some directories and some files (some are hidden, beginning with dot). for d in *; do echo $d done will loop through all files, but I want to loop only through directories. ...
2
votes
3answers
75 views

Modify multiple files in different folders with one command?

I have a file abc.txt in the folder /etc/zyz/ and also in a few sub folders /etc/zyz-1/ /etc/zyz-2/ How can I modify all of those files with a echo command for example (all named abc.txt) in every ...
4
votes
1answer
117 views

Undeletable directory

Everything I've tried (always with superuser privileges) has failed: # rm -rf /path/to/undeletable rm: cannot remove ‘/path/to/undeletable’: Is a directory # rmdir /path/to/undeletable rmdir: failed ...
0
votes
0answers
31 views

why this file not modifying? [closed]

sed -i "s/'${line[*]}'/'${newlinem[*]}'/" test2.txt I'm trying to replace whole line of my text file with new modified line. but my file not modifying with sed -i Both the above arrays are working ...
1
vote
2answers
35 views

Piping contents of multiple files between programs while keeping contents separate

I would like to read in a number of files and pipe their output to subsequent programs while still maintaining them as individual pipelines of data. program1 *.txt | program2 | program3 folder I ...
2
votes
1answer
29 views

How to create a zip of directories -mtime -150

I want to zip the directories, sub directories, files in main and sub directories from today till 150 days ago. I only consider the date of the directories where I am running the command, no matter ...
0
votes
0answers
18 views

Get mutt to open files >2G

According to the very likely sounding answer to How to access and manage a large mailbox (11 GB) I need to use mutt to open the large mailbox. However the 2G limit was supposed to have been removed ...
6
votes
7answers
300 views

File protection in Unix

Is there a way to protect a file in such a way that even root cannot delete it or rewrite it after creating it? I have a file which is created by root under /var/log/ and I want to restrict all users ...
4
votes
2answers
2k views

Access history of a file [duplicate]

I was wondering if there are any tools to keep track of the access history of a file. I know of stat, but as far as I understand, it only returns information about the last time the file was accessed. ...
4
votes
4answers
18k views

Linux file access monitoring

Is there any way in unix to find out who accessed certain file in last 1 week? It may be user or some script ftp it to some other place. Can I get a list of user name who accessed certain file? How ...
4
votes
1answer
87 views

Using inotifywait along with vim

I have simple script that monitors file for changes and rsyncs it with remote copy: #!/bin/bash while inotifywait -e close_write somefile do rsync somefile user@host.domain:./somefile done It ...
2
votes
5answers
91 views

Change strings in multiple files to current subdirectory name

I have several directories each containing a file containing this line: ../a_a_q1.out ../a_a_q2.out ../a_a_q3.out I would like to loop through all the subdirectories, and change the a_a part to the ...
3
votes
1answer
45 views

How does `lsof` keep track of open file descriptors' filenames?

I've noticed, if a file is renamed, lsof displays the new name. To test it out, created a python script: #!/bin/python import time f = open('foo.txt', 'w') while True: time.sleep(1) Saw that ...
1
vote
1answer
33 views

How do I find directories where none of the files inside have been accessed in a year?

I have a tools directory /tools/tool_name that has hundreds of releases of the tool inside. I am trying to find an easy way of knowing what releases can be archived. Is there an easy way of finding ...
-5
votes
1answer
65 views

Find the number of files with sizes

Find the number of files with sizes > 100KB in /, /bin, /usr, /usr/bin and /usr/sbin directories and output them in a two column format with the name of the directory and the number of files.
-1
votes
1answer
16 views

Daemon opens a file in RO mode only

I am trying to write a kind of keylogger myself. I don't know if my logic of developing a keylogger is good or not but I have thought of doing it the following way. First a daemon is created, and to ...
2
votes
1answer
52 views

Continously writing terminal output to text file

I am running a small cli python app in terminal. It loops infinitely and outputs text to the terminal. I want to output the text to a file, and I can do that with the following command python [my cli ...
68
votes
4answers
58k views

How to tell gzip to keep original file?

I would like to compress a text file using gzip command line tool while keeping the original file. By default running the following command gzip file.txt results in modifying this file and renaming ...
32
votes
8answers
10k views

How to delete this undeletable directory?

I untarred a corrupt tar file, and managed to end up with some directory that I can not delete, If I try to delete it, it seems like it can not be found, but ls shows it's present, both with bash and ...
4
votes
3answers
123 views

How to copy recursively and change file names to be unique

I have a large tree containing a lot of photos on an external drive that was formatted with one of the linux filesystem types (don't remember which one). It's mounted on my mac and I'm trying to copy ...
1
vote
2answers
68 views

What is the file permission of /etc/shadow in CentOS?

What is the default file permission of /etc/shadow in CentOS? Is there any difference in the default file permission of /etc/shadow in previous versions of CentOS?