All Questions
12 questions
7
votes
6
answers
1k
views
How to cause awk to fail if previous command (tar) also fails?
I have a bit of an issue with the following command which extracts a tar file & prints how many files have been extracted every second:
tar -xvf some_tar.tar -C a/directory | awk 'systime() > ...
- 273
-3
votes
1
answer
255
views
Extract an ID that matches the user login from a table on shell script
So, I have all these user login information (service, admin, J009878) and this table you see here comes from another command whose output is this table which I save in file.txt. What I want to achieve ...
- 23
1
vote
2
answers
7k
views
USB reset using lsusb output
I have a USB device that I wish to reset automatically, there are two USB devices currently, but at times there may be more.
[user1@gs10 devt]$ lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation ...
- 67
1
vote
1
answer
2k
views
Piping to multiple awk commands
I'm trying to pipe the output of one command to two different awk commands. Following this post I am using tee and process substitution. However, I can't see the output for the substituted process.
...
- 17
6
votes
3
answers
4k
views
recursively count lines in files, group by file extension
Question
I have a git repository full of files, mostly text.
I want to know that there are
n lines of code in files ending in .py
m lines of code in files ending in .md
o lines of code in files ...
- 857
3
votes
5
answers
1k
views
Sum in bash outside while read line
I'm trying to come up with the sum of lines in .js files in a folder. I'm using this in bash:
sum=0 && find . | grep ".js" | while read -r f; do wc -l $f | awk '{print $1;}'; done;
putting ...
- 357
1
vote
2
answers
488
views
awk not recognized in shell script
I'm trying to do floating point arithmetic in a shell script. I learned that awk can do it on the command line, but the way it works there does not seem to carry over to a shell script. When I type ...
- 39
3
votes
2
answers
12k
views
How can I get feh to set wallpaper to each monitor according to its size?
I have a directory filled with png files
$ tree ~/wallpaper/
~/wallpaper/
├── foo--1366x768.png
├── foo--1920x1080.png
├── foo--2048x1080.png
├── foo--3440x1440.png
└── foo--3840x2160.png
0 ...
- 2,905
1
vote
2
answers
5k
views
Pipe and filter bash outputs in realtime
I am running some commands in bash (basically some ffmpeg commands), that I'm using grep and awk to filter out the results. The command takes some time and continously outputs some results as it ...
- 165
0
votes
1
answer
1k
views
Parse a tabular contents of a file using bash one-liner or script
I have been trying to figure out on how to sort through a log file (format pasted below) using linux commands for sometime and I just can't get it to work. The file has a setup as follows;
columnA | ...
- 11
5
votes
1
answer
1k
views
Having problems with bash array $PIPESTATUS
I'm working on a script (that will run on OSX, and probably nothing else), that basically just parses the /var/log/accountpolicy.log* logs for authentication times/counts. The initial command is a ...
- 535
8
votes
1
answer
5k
views
Pass colors from ls through pipe to awk 'print' statement
This is a follow-up to my question from yesterday, Show sum of file sizes in directory listing.
Thanks to Zero Piraeus and a point in the right direction by Mauritz Hansen, I now have
function dir() {...
- 2,444