Questions tagged [truncate]
The truncate tag has no summary.
21 questions
4votes
2answers
533views
What is the "at most" modifier for in 'truncate'?
The manual of truncate shows I can add < for "at most". What is this for? It sounds like the default to me.
- 30.2k
-1votes
1answer
140views
Truncate command not creating a hole
I am trying to create a file with hole using the truncate command. I read up in some posts and one of the answers in this post says to use truncate command. Filesystem used is btrfs. This is the ...
0votes
1answer
579views
Problem creating a disk image of an SD card
I have built a custom image of Armbian with a partition size of 3.1 GB, and I am now finished working with it. It is currently written to a bootable 64 GB SD card which is using a GUID partition table ...
0votes
0answers
692views
"> $logfile" does not truncate, file size goes to 0 and a second later, is back to full size [duplicate]
I have a script that writes to a logfile like this: $ nohup myscript.sh > myscript.out 2>&1 & when the log file gets very large, I need to truncate it like this: > myscript.out I ...
0votes
1answer
1kviews
Truncate expand doesn't seem to work
I just expanded my 1GB "homefile" which is mounted to /home/user by another GB using truncate -s +1G homefile. While it changed the size of homefile shown with df to 2GB, when mounted it is ...
- 737
2votes
2answers
1kviews
Truncate file that is opened in another procces
If I try truncate -s 0 log.log (:>log.log has same behavior) the displayd space on disk do become free but the size (ls -l) of file is still the same (tho du shows less). As far as I understand, it ...
- 23
28votes
4answers
35kviews
Is there any limit on line length when pasting to a terminal in Linux?
I am trying to send messages from kafka-console-producer.sh, which is #!/bin/bash if [ "x$KAFKA_HEAP_OPTS" = "x" ]; then export KAFKA_HEAP_OPTS="-Xmx512M" fi exec $(...
- 3,375
1vote
0answers
237views
truncate command to to safely remove Celery log files?
I my Ubuntu server that is running Python/Celery has about 9 log files totaling to 9GB space. Is it safe to reduce the size of these files by running the following command? truncate -s 0 *log If not,...
1vote
1answer
101views
tee pipeline and pnmtools - truncated file
This sequence of commands works OK: pngtopnm file.png 2> /dev/null > dump1 pnmfile < dump1 stdin: PPM raw, 1920 by 1080 maxval 255 ls -l dump1 -rw-r----- 1 cmb 6220817 Sep 15 14:26 dump1 ...
- 113
0votes
0answers
62views
truncate linux kernel
firstly sorry for my English. I want to truncate kernel options like Bluetooth, mouse, keyboard etc.. except for my use. but how can I know that kernel options related to devices that I want to remove?...
-1votes
1answer
463views
tail -n 10 is truncating my entire file [duplicate]
I have these 2 scripts, one is writing to the file: #!/usr/bin/env bash while true; do sleep 1; echo "$(uuidgen)" >> /tmp/cprev.stdout.log done; the other is reading the last 10 lines ...
- 10.6k
0votes
1answer
1kviews
What could cause a log file to be trunctated during writing?
In my workplace, I've inherited the responsibility of managing a web server. It's a CentOS Linux virtual machine, running on Amazon AWS EC2. Alongside serving web pages, there is a pile of scheduled ...
- 235
10votes
9answers
7kviews
Is it possible to truncate a file (in place, same inode) at the beginning?
It is possible to remove trailing bytes of a file without writting to a new file (> newfile) and moving it back (mv newfile file). That is done with truncate: truncate -s -1 file It is possible to ...
user232326
2votes
2answers
774views
/usr/bin/truncate: Argument list too long
I want to use the truncate command to create a huge number of small files for testing. I tried the command with a small number of files (100) and it worked. When I changed the number to 1000000, it ...
- 2,010
4votes
1answer
2kviews
Difference between writing file from /dev/zero and truncate
$ timeout 1 cat /dev/zero > file1 $ wc -c file1 270422016 file1 $ du file1 264084 file1 Questions : (1) How do 270422016 null characters come out to be 264084 bytes (i.e 258M). $ truncate -s ...
- 4,259
