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

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3
votes
3answers
503 views

Remove passphrase from private key and set specific file mode

If I set a passphrase on my private key like so: openssl rsa -des -in insecure.key -out secure.key and I remove the passphrase like so: openssl rsa -in secure.key -out insecure.key then my ...
1
vote
1answer
23 views

File with a no-atime-updates “A” attribute still updates atime. Why?

$ stat file_1 | tail -n 4 Access: 2015-04-16 21:48:42.675095130 +0200 Modify: 2015-04-16 21:48:42.675095130 +0200 Change: 2015-04-16 21:51:31.844300132 +0200 Birth: - $ lsattr ...
2
votes
1answer
194 views

How to split file and save parts to multiple locations?

How do I split a large file into multiple smaller chunks and write each part of it into separate locations? split command seems to only output all the files into one location. The context I need to ...
-1
votes
1answer
91 views

How to remove duplicate lines from file? [duplicate]

I have file for example 'a' aaa aaa bbb ccc ccc bbb ddd After executing uniq a c i get file 'c' aaa bbb ccc bbb ddd How to delete duplicate bbb lines?
1
vote
1answer
216 views

File corruption using rsync, multiple rsync processes, moved/renamed source file

I'm encountering some file corruption when using rsync (that is, the file contents do not match the source file). I can understand the file becoming corrupt if it is being written to while being ...
4
votes
1answer
320 views

Find the files between two folder dates in linux?

I need to find the folder names along with the file names which has my string in their contents. I am in this directory "/data/queue/data" and I have lot of folders in the same directory and inside ...
1
vote
1answer
147 views

How to undo and revert an accidental `7z e`

I accidentally typed 7z e archive.7z and all the files ended up in my home directory when I wanted to extract them in a subfolder. How can I clean the mess and remove all those files?
3
votes
4answers
2k views

Is is possible to modify a file in a read only directory? [duplicate]

I have already read: Is there a way to modify a file in-place? I am curious if there is a way to modify a file in place using a command that will not create temporary files. Let's say I create a ...
-1
votes
1answer
57 views

enable to write to file inspite we remove all file permissions

something isn’t clearly for me when I remove all permissions from file as chmod 000 I expected to get permissions denied when I write to file but still I can write to file as the following example can ...
2
votes
2answers
223 views

Make rsync move (not copy) files on local file system

Can I make rsync to move large amount of files instead of copying them when on local filesystem? I would like it to behave like improved mv command. I know about --remove-source-files option but ...
3
votes
3answers
191 views

remove all instances of _000 from multiple files

Had to recover my music library from a HDD which died.... got everything I wanted but all music track names have _000 added at the end. I really don't fancy going through 8000 individual music tracks ...
1
vote
1answer
663 views

Is there a way to use sed or awk to filter data inside a zipped file? [duplicate]

Is there a way to use sed or awk to filter data inside a zipped file? When I run a sed or awk command and send to stdout the file created is 0 bytes.
0
votes
3answers
512 views

copy the contents of a variable in a text file

I know this is a stupid question but I want to know how I can put the contents of a variable in a text file. This variable is a string that I want the code with the base64 command.But this command ...
3
votes
1answer
305 views

How can I see a file's historical modification times? [duplicate]

stat outputs a file's last modification time. How can I see a list of all the times a file was modified? For example, I'd like to edit a file 5 times, and see 5 modification times.
4
votes
5answers
373 views

Script tries to create files even though it shouldn't have to?

I have a folder which contains some folders, these folder are moved very often so I made a script to see if they exist, and if not then create them. This is what I did to (which I though would) ...
14
votes
3answers
37k views

Delete files older than X days +

I have found the command to delete files older than 5 days in a folder find /path/to/files* -mtime +5 -exec rm {} \; But how do I also do this for subdirectories in that folder?
1
vote
1answer
74 views

How to copy a directory with only specified type of files?

I got a git directory with plenty of python files(and some special file like .git). I'd like to copy only these python files to another directory with the directory structure unchanged. How to do ...
4
votes
4answers
175 views

Traverse, copy & transform file names

My issue: I need to copy log files, all with identical names, but stored 1-deep in subdirectories, and change their names. I'm copying from the a folder called Logfiles which contains a bunch of ...
-1
votes
1answer
99 views

Generate a tarball or (.tar.gz) of the recently modified files in the directory

As the title says, I need help creating a linux script that generates a tarball or (.tar.gz) of all the files in the directory passed in as an argument to the script and have been modified in the past ...
0
votes
1answer
45 views

File permissions categories

So I am a little bit confused with File permissions categories. So here is what I do understand and correct me if I am mistaken. For every File , there is an Owner (one user) which have a symbol u ...
1
vote
1answer
74 views

Recursively list files containing an underscore in the file name

I have a large directory with tons of files and subdirectories in it. Is there a way to recursively search through all of these files and subdirectories and print out a list of all files containing an ...
2
votes
1answer
218 views

Using find and sed to copy 20th line of many files into one file

I have a folder called PKA1 Within this folder I have several folders named as: 1eV, 2eV .... 30eV Within each of these subfolders I have a file called PKA.dump I want to copy the 20th line of ...
2
votes
1answer
134 views

string search using awk

I have file-1 which has list of transaction id . File -1 201503301616|9b8791b3-f860-409f-aad0-24debf834c1b|10.233.18.29.677220869928387637969 ...
2
votes
1answer
62 views

Tree with directory name and filenames

I run with tree 1.7.0 tree -PF dat It gives . ├── 0deg/ ├── 105deg/ ├── 120deg/ ├── 135deg/ ├── 150deg/ ├── 15deg/ ├── 165deg/ ├── 180deg/ ├── 210deg/ ├── 240deg/ ├── 270deg/ ├── 300deg/ ├── ...
0
votes
1answer
97 views

How to get new created (not change or modified), & removed files in last 24 hours

I want to write one script where I need the below function : List all the files which are created in last 24 hours. If I give the find command with ctime option then it list all files which are ...
-1
votes
1answer
21 views

how to disable folders/files under root folder in RHEL?

I want to "disable" listing of folders and files under root folder in RHEL. So when I login to my application nothing should be visible in root folder.
5
votes
1answer
460 views

Is it possible to create a non-empty file without write_close and rename event?

The reason why I am asking is because I'm using iwatch (not to confuse with a gadget device) to watch for filesystem events (in my case - file creation/renaming). What I cannot explain is this log: ...
0
votes
2answers
303 views

Expect Scripts - Reading from Files and Accepting User Input

How can I write an "Expect" script to: iterate over a list of IP addresses and log in to each to perform commands (like in a BASH for loop). Right now I just copy/pasted the few lines that are my ...
0
votes
1answer
50 views

How to set path in cronscript

I am running a cronscript like: */45 * * * * /path/to/php /path/to/file.php it creates a file and put on home directory; But I want to create this file in my desired path like: */45 * * * * ...
2
votes
1answer
384 views

How to list directory/file sizes in general on UNIX-like systems?

In general on a UNIX-like system (Linux, AIX) the following can list file/directory sizes in MByte, even if the filename is starting with a "-": du -sm -- * 2>/dev/null | sort -nr | head -25 ...
1
vote
1answer
695 views

How to use convert command with bash to resize all images in a given directory?

I want to resize all PNG files in ~/somefolder/ whose filenames are NOT started with tn_ to 50% of its original size and rename the output file with a tn_ as its prefix and its original name. I know ...
5
votes
2answers
500 views

How are mutually untrusted app's files protected in Linux

I am running a Ubuntu Linux machine. When I run applications written by different vendors like Chrome and Firefox, I notice that they all are running with my uid. But if that's the case, any file they ...
2
votes
1answer
148 views

Why does chmod succeed on a file when the user does not have write permission on parent directory?

I am trying to understand file/dir permissions in Linux. A user can list the files in a directory using cd test ls -l Even if the user issuing above commands does not have read, write or execute ...
-1
votes
1answer
640 views

Copy files from find command [closed]

I am trying to copy all *file.log files found using find. The problem is all files are named the same and it is only copying over one file. I need to find a way to rename the files in the command or ...
6
votes
2answers
300 views

How can I list files of which no symlinks exist?

I have a large "myfiles"directory full of miscellanous documents and do not want to modify its structure. I therefore created (several) other directories for each class of documents. For example I ...
2
votes
2answers
122 views

Print file contents and delete the printed content* from the file

In Linux, from a bash shell, how can I print the contents of a file and remove the content I just printed content from the file? I have a program writing texts to a file repeatedly. On a Linux shell ...
2
votes
4answers
1k views

Does the inode change when renaming or moving a file?

in PHP the fileinode() functions returns the inode of a file. I was wondering if I can use it to determine if a file was renamed, moved or modified. I did some tests and it seems the inode stays the ...
7
votes
6answers
1k views

Exclude directories in locate search

A search with locate finds paths in the filesystem. Often, you know a priori you are interested in either files only, or directories only. A 'locate' search often returns many results. It would be ...
2
votes
4answers
209 views

input file stream to command

How is it possible to send a file stream to this command instead of a file? /usr/local/bin/wkhtmltopdf --title "$SUBJECT" -q $SOURCEFILE $OUTPUTFILE The file stream is from a string in PHP.
3
votes
3answers
161 views

Can a file be edited with the 'write' permission on it but not on its parent directory?

Suppose the owner/user doesn't have the write permission on a directory but he has it on a file under it. Can the file here be edited or not? If yes, is there any situation where the file cannot be ...
0
votes
0answers
95 views

Touch a file and give it an icon image via command line

Imagine this situation: for a given task, at some point of it, I should be able to create an empty file, which I can achieve by touch file.ext on the command line. However, if I touch a .jpg file, and ...
0
votes
1answer
148 views

Search a file for a string in multiple directories

Can someone please help me with a command to search a file for a string in multiple directories? I am searching for the VIP in httpd.conf in multiple httpd instances. I am using: find ./ -name ...
1
vote
1answer
141 views

Can I restrict sudoer nopasswd to directory?

Maybe I should rephrase - what is the most secure way to accomplish my needs? Details I am using WinSCP to modify my Apache document_root. The directory /var/www/html has an owner and group of root. ...
0
votes
0answers
40 views

backup without closing programs that are opening files for editing, and detect unsaved open files?

Is it possible to do backup without closing programs that are opening files for editing? I would like to do backup without closing programs that are opening files that I am reading or writing. I ...
0
votes
0answers
39 views

Cancel removing a directory, and want to find out what have been removed

I was removing a directory by rm -r mydir and cancelled it in the middle. How can I find out what have been removed under the directory? Does remove a content of a directory change the timestamp of ...
2
votes
2answers
150 views

vim: how to trace back all changes done to file during the day

Does anybody know how to setup vim (the text editor) in such a way to make it possible to trace back all the changes done to a file within a day? I need it for the cases when I have accidentially ...
0
votes
1answer
137 views

Unable to delete a file on different user's directory

I've two user's abc & xyz and the user abc has been added to the group xyz via usermod -a -G xyz abc and here the file permission on home directory of xyz i.e /home/xyz: drwxrwxr-x 2 xyz xyz ...
5
votes
1answer
3k views

Difference between owner/root and RUID/EUID

I am relatively new to the concepts mentioned in the question and reading about them from different sources only makes them more confusing. So this is what I understood so far: When we are given ...
4
votes
1answer
69 views

Recovering data written to file that moved

I have a Python daemon running on CentOS that opens a file at the beginning of a session, and keeps writing to it. A cronjob however, gzipped the file that was being written to, and so the file moved ...
3
votes
2answers
574 views

How to list files on terminal so that we can see the file types such executable, ascii etc?

I have been trying to list files in directory using ls and passing it different options. Does it have the ability to list types of files as well ? I want to know which ones are executable , ...