How can I time a pipe?
I want to time a command which consists of two separate commands with one piping output to another. For example, consider the two scripts below:
bash
Why is the array empty after the while loop?
I try to initialize an array in bash-4.2 next way: ring=() ls -las | tail -n +4 | while read line > do > ring+=("$line") > echo ${ring[-1]} > done 3924 -rw-r–r– 1 username group 4015716 Mar 23 15:14 script.jar 4 -rw-r–r– 1 username group 9 Feb 29 12:40 rec.lst 5541 -rw-r–r– 1 username group … Read more
Can’t redirect cut output
When I try to redirect the output of cut it always seems to be empty. If don’t redirect it, the output shows in terminal as expected. This is true for OS X 10.10 and Linux 4.1.6.
Bitwise shift and the largest integer in Bash
This is an exploration question, meaning I’m not completely sure what this question is about, but I think it’s about the biggest integer in Bash. Anyhow, I’ll define it ostensively.
Can I use a variable in a Bash brace expansion?
Below is some sort of pseudo-code for what I’m trying to accomplish:
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?
Can I “export” functions in bash?
source some_file some_file: doit () { echo doit $1 } export TEST=true If I source some_file the function “doit” and the variable TEST are available on the command line. But running this script: script.sh: #/bin/sh echo $TEST doit test2 Will return the value of TEST, but will generate an error about the unknown function “doit”. … Read more
View remote value of $PATH inside shell script
When executing this bash script, it only shows my local path.
What do the scripts in /etc/profile.d do?
I am reading about basic shell scripting from Linux Command Line and Shell Scripting Bible.