The Geeky Linux :: Ubuntu/Linux blog :: Open source Tips and Tricks :: Linux Howtos and Tutorials

Sometimes we want to combine the lines in a file as single line. How to achieve this in linux using command line?

We can use the command 'paste' for this purpose.

From its man page,

paste - merge lines of files

First day of Last Month = echo $(date --date "-1 month" +%Y-%m-01)
Last day of Last Month = echo $(date --date "-`date +%d` days -0 month" +%Y-%m-%d)

First day of Current Month = echo $(date --date "-0 month" +%Y-%m-01)
Last day of Current Month = echo $(date --date "-`date +%d` days +1 month" +%Y-%m-%d)

First day of Next Month = echo $(date --date "+1 month" +%Y-%m-01)
Last day of Next Month = echo $(date --date "-`date +%d` days +2 month" +%Y-%m-%d)

"Foto" is a new elementary style image and album viewer app. It is very light weight when compared to  shotwell - the default image and album viewer app of elementary. As you know, I'm using a daily build of elementary os and I had upgraded it. But before completing the upgrade, I computer got switched off and the update failed. Then I found that one of the dependency of shotwell is causing the issue and I'm not able to run the update or install any other packages.

Today I had a problem. I have allocated around 30 GB of hard disk for my elementary os installation. It was almost full and only around 110 MB free space was there. But I had run the software update and shut down the computer. But after some time, when I restarted the computer, I was not able to access the Graphical User Interface. I am stuck.

Then I tried accessing the another terminal (not GUI, but tty) using key shortcut Ctrl+Alt+F1 I was able to access the terminal. I gave my username and password and I was able to login to the terminal. Then only thing not working is GUI (Hint :- issue with X windows system). I ran the command df -h and found that / is full (there is no free space).