Bash is the shell from the GNU project. It is the standard shell on many Linux distributions and often available on other *NIXes.
1
vote
1answer
20 views
How to automatically apply changes in a folder to another?
Running Ubuntu 12.04, I work software "production" on certain folders and then I usually copy files I make up to another paths where I do the "deployment".
For example, sometimes I produce some files ...
1
vote
3answers
36 views
How to combine bash arithmetic with command output?
Suppose you had two commands:
First command
let foo=2+2
echo $foo
4
Second command
date "%s"
1377107324
How would you combine them?
Attempt 1.
echo The epoch time is: `date +%s` in 100 ...
2
votes
3answers
43 views
How do I select files in a bash script that do not have an extension?
Let's say I have files xinitrc, alphabetsoup, ieat.pie in the current directory. Need a bash script to select only xinitrc and alphabetsoup.
5
votes
7answers
355 views
Is there a way to make “mv” fail silently?
A command like mv foo* ~/bar/ produces this message in stderr if there are no files matching *foo.
mv: cannot stat `foo*': No such file or directory
However, in the script I'm working on that case ...
4
votes
1answer
49 views
Looking for lines which is in one file but not in other using Unix and Awk
I have 2 files with 7 fields and I want to print the lines which are present in file1 but not in file2 based on field1 and field2.
Logic: I want to print all the lines, where there is a particular ...
0
votes
5answers
59 views
Using cut/awk/sed with two different delimiters
I have the following cases:
[email protected]
[email protected]
[email protected]
I'm trying to convert these to
[email protected]
[email protected]
[email protected]
So it should remove everything from ...
4
votes
2answers
163 views
Shells in tabbed windows in a terminal
I want to do tabbed terminal stuff without having actual tab windows in my terminal application.
Is there any good way to do this within bash? It would come in very handy with SSH if I could avoid ...
1
vote
2answers
46 views
How to hide the . and .. from ls
When I run ls -l on a directory, I see an entry titled '.' How can I remove the row containing '.' from the output?
ls -latr /foo | tail -n5
-rw-rw-r-- 1 guest bar 59169 Aug 20 12:22 ...
2
votes
1answer
41 views
Why does Bash readline sometimes try to parse the second word of a command out of context?
I recently migrated all my dotfiles and setting to a new laptop running Ubuntu 13.04, and have been noticing a strange behavior that I've never seen before. Essentially, it seems like my terminal is ...
2
votes
4answers
53 views
Shell script to check for the presence of one or more files with a specific extension?
I want to write a script to find a file with specific extension.this much i have done:
#!/bin/bash
file="/home/Savio/Dsktop/check/*.csv"
file1="/home/Savio/check/*.txt"
if [[ -f "$file" && -f ...
5
votes
1answer
72 views
How can I execute local script on remote machine and include arguments?
I have written a script that runs fine when executed locally:
./sysMole -time Aug 18 18
The arguments "-time", "Aug", "18", and "18" are successfully passed on to the script.
Now, this script is ...
0
votes
1answer
33 views
File permissions when mixing command line and server
I have a PHP server which creates folders and files for certain things. I also run supporting code from the command line operating on the same folders and files.
The problem is that when running from ...
4
votes
4answers
208 views
Why cat, grep and other commands can't understand files starting with minus sign? [duplicate]
If I have a file which name starting with single or several minus sign, for example --1 it can't be used as a parameter of many commands. Even if I run
cat --1
instead of file content I get ...
2
votes
0answers
67 views
Why is delay after ifconfig down needed before up if changing MAC address?
Hi I made bash script to put down my interface, change MAC address and get it up again.
#!/bin/bash
INTERFACE_STATUS=$( cat /sys/class/net/eth0/operstate )
echo "$INTERFACE_STATUS"
if [ ...
4
votes
3answers
84 views
Getting unexpected colorized output on several commands
I just added this to my .bashrc to get colorized output with less:
# Colorize less man pages.
export LESS_TERMCAP_md=$'\e[01;34m'
export LESS_TERMCAP_us=$'\e[01;33m'
export ...
