Hello I have a bash script, which I named c2c12.sh. This script does some statistical work on my data. I have my main directory, 4%GXG, which contains 3 sub directories, plate 1, plate 2, and plate 3. In wach of these sub directory, there is 10 directories (c1...c10) in each of plate 1, 2, and 3. Furthernore, in each of these ten there are 4 directories (A, B, C, D) . Finally in each of the four, I have my data and the bash script. When I run several of the bash scripts in seperate terminal windows, it goes pretty slow since it is processing a lot of data at the same time, and so it ends up crashing. I am not an expert in linux, but I have to use it it for this statistical analysis which I am doing. I want to prpgram something which will tell it to go to 4%GXG ---> plate1---> c1--->A----> bash script statistical analysis---> output result in the same file, after it is done it goes to B, C, and D. Then after it goes c2---> A----> bash script statistical analysis---> output result in the same file, then B, C, D, etc... Drawing it as a tree 4%GXG | | ________________________|___________________ | | | plate1 plate2 plate3 | | | | _________|________________ | | | | | | | | | | | | | | c1 c2 c3 c4 c5 c6 c7 c8 c9 c10 | | | _____|______________________ | | | | | | | | | | | | | | c1 c2 c3 c4 c5 c6 c7 c8 c9 c10 _____________|______________ | | | | | | | | | | c1 c2 c3 c4 c5 c6 c7 c8 c9 c10 In each of the c1...c10 there is directory A, B, C, D. In each A, B, C, D, there is the data and the bash script. I hope this is clear. I would really appreciate any help from the experts in LINUX..I have read online, even posted on forums, but never got any luck, hence I resorted to OCLUG. Thank you again Best Zeinab